How to Dry a Wet Mattress After Water Damage

Water damage is one of the most common and destructive issues that can affect household items, including mattresses. Whether it’s due to a leaky roof, a burst pipe, or a spill, water damage can quickly ruin a mattress, causing mold, mildew, and unpleasant odors.

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In such cases, the question arises: should you restore or replace the damaged mattress? While restoring a mattress can save you money, it’s important to understand the extent of the damage and the potential health risks associated with mold and mildew growth.

In this article, we’ll explore the different causes of water damage, the signs of damage to look for, and the options available for restoring or replacing a water-damaged mattress.

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Quick Assessment: How Wet Is Your Mattress?

• Quick answer: A mattress with wet areas smaller than 12 inches that you can blot with 2-3 towels is mild damage; if liquid pools on the surface, the mattress feels heavy, or wet areas exceed 24 inches, you’re dealing with severe damage that may need professional restoration or replacement.

Before you begin, it’s important to see if it’s worth the effort to try and save your mattress with DIY methods. A mattress submerged for extended periods will need more care when drying it than a mattress wet underneath from a newly spring leak, in our experience.

Consider the cause of water damage, as well. For example, floodwaters from a hurricane or other storm can leave bacteria and toxins inside your mattress.

Mild Wetness (Small Spills)

• Wet area is smaller than 12 inches across
• Liquid is only on the surface
• You can soak it up with 2-3 towels
• Action needed: Blot with towels, use baking soda, and air dry with fans

Moderate Wetness (Larger Spills or Accidents)

• Wet area is 12-24 inches across
• Moisture has soaked into the top layers
• Takes more than 5 towels to blot
• Action needed: Wet/dry vacuum extraction, baking soda treatment, and extended air drying with dehumidifier

Severe Wetness (Flooding or Submersion)

• Multiple areas are wet, or the entire mattress is soaked
• Mattress feels heavy when you try to lift it
• Water pools on the surface or drips when pressed
• Action needed: Consider professional restoration or replacement, especially if water source is contaminated

Immediate Replacement Needed:

• Water came from toilet overflow, sewage, or outdoor flooding
• Mattress was submerged for more than 2 hours
• You see any mold growth (white fuzz, green, brown, or black spots)

If needed, you may need to consult a restoration professional and decide if it’s worth investing in your current mattress or replacing it with a new model.

Sometimes it’s better to know when to ‘wash your hands’ of a ruined mattress, disposing of it or sending it off to a mattress recycling program.

How to Dry a Water-Damaged Mattress

• Quick answer: Start by blotting with dry towels using body weight pressure, then extract remaining moisture with a wet/dry vacuum, apply baking soda for 4+ hours, and run fans + dehumidifier continuously while keeping the mattress propped vertically for 8-48 hours.

Drying a water-damaged mattress by yourself can be a tricky process, but there are steps you can take to help restore the mattress to its original condition. It requires patience and care and is important to act quickly to prevent further damage. Here are some tips for drying a water-damaged mattress.

Remove Any Excess Moisture

Start by removing any excess moisture from the mattress. You can use towels, rags or a wet-dry vacuum to soak up as much water as possible.

First, dab dry towels to sop up moisture, pressing down hard into the surface of the mattress. However, you must avoid rubbing with the towel, as you can push the moisture further into the mattress. Exchange wet towels with dry ones as they become saturated. Repeat until you’ve removed as much water as possible.

Sprinkle baking soda over the surface to absorb extra moisture, or press cat litter upon the surface if the mattress is still quite wet. Leave them alone for a few hours and vacuum them up.

Then, as this will likely not be enough to handle all residual moisture, use a wet/dry shop vacuum designed to extract liquids. If you don’t have one, most home improvement stores offer rentals. Keep working until you get your mattress as dry as you can.

Avoid Heat Sources

It’s tempting to take something warm to the bed and speed up the drying process. However, it is important to avoid using heat sources to dry a water-damaged mattress. Heat can cause the foam and other materials inside the mattress to warp or become misshapen. So, avoid using hair dryers or space heaters to dry the mattress.

Cleaning experts are mixed on whether this ban on heat sources includes sunlight, as our team discovered. On the one hand, sunlight is a natural sanitizer and can provide a more gentle sort of heat. On the other hand, direct sunlight may cause the mattress materials to break down and warp, exactly what you’re trying to avoid by air drying the mattress.

Sunlight can also cause discoloration and fading of the mattress fabric. We suggest erring on the side of caution and drying your mattress either indoors or outdoors but out of the way of direct sunlight.

Inside, use a fan to circulate air around the mattress. You can also use a dehumidifier to help remove excess moisture from the air. Make sure to keep the fan on for several hours or even overnight to ensure that the mattress is completely dry.

Keep it Elevated

It is important to keep the mattress elevated off the ground during the drying process. This can help air circulate around the mattress and prevent mold or mildew growth. It also helps to prevent any remaining water from seeping further into the mattress, which can make the damage worse, and limit any potential damage to the floor or carpet underneath.

If the mattress remains on the floor or another flat surface, it can trap moisture and create an ideal environment for mold and mildew growth, which can be harmful to your health and cause long-term damage to the mattress. This same logic is why it’s not recommended to keep your mattress on the floor permanently, instead investing in a frame or other bed base.

To elevate a wet mattress, you can use a few sturdy objects such as wooden blocks, bricks or cinder blocks, and other DIY bed risers. Place them underneath the mattress at even intervals. This will create a stable base for the mattress to rest on while allowing air to circulate freely around it.

You can also stand the mattress on its side, leaning against the wall and supported on blocks or bricks.

Deter Mold Growth

Mattress mold is one of the most dangerous consequences of water damage. Even if you take immediate action to address absorbed moisture, mold may already be flourishing.

To prevent mold growth, you can create a cleaning solution by mixing one cup of rubbing alcohol with one cup of water. Dip a clean cloth into the mixture, wring it out, and use it to wipe down the entire surface of the mattress, allowing the alcohol to work its magic in preventing mold. Ensure that the mattress dries completely after cleaning.

In addition, using an air purifier can help to remove mold spores and other allergens from the air. HEPA filters, in particular, are very effective at capturing airborne mold spores and preventing them from spreading throughout your home, including ones that might settle on your bed.

How Long Does It Take a Wet Mattress to Dry?

• Quick answer: Most mattresses take 8-24 hours to dry completely with proper fans and dehumidifier use, but heavily soaked mattresses can take up to 48 hours—the 48-hour mark is your absolute deadline before mold takes hold.

The time it takes for a wet mattress to dry depends on several factors, including the amount of moisture in the mattress, the humidity and temperature of the room, and the amount of air circulation.

With these variables, most mattresses take between 8-24 hours to dry completely with proper air circulation and dehumidification. However, heavily soaked mattresses can take up to 48 hours.

In general, a mattress that is only slightly damp may dry in a few hours with good air circulation, while a mattress that is very wet may take a day or more to dry completely.

It’s important to be patient and allow the mattress to dry completely before using it again to avoid further damage or mold growth. If you don’t let the mattress dry fully, then placing your bedding and such on it can trap moisture.

Troubleshooting: Still Damp After 24 Hours?

If your mattress is still damp after 24 hours, don’t panic—increase air circulation, reapply baking soda, check for hidden moisture in the core, and reposition the mattress, but know that the 48-hour deadline remains firm.

Increase Air Circulation

• Add a second fan aimed at the opposite side of the mattress
• Open more windows to create cross-ventilation
• Place the mattress outside if weather permits (avoid direct sunlight for latex)

Boost Moisture Removal

• Apply fresh baking soda to damp areas and let sit for 2-4 hours
• Vacuum thoroughly and repeat if needed
• Run a dehumidifier on the highest setting in the room

Check Hidden Moisture

• Press firmly on different areas of the mattress with your hand
• Feel for cool spots that indicate trapped moisture
• Pay special attention to the center and bottom of the mattress

Reposition the Mattress

• If lying flat, stand it on its side against a wall
• If already vertical, flip it to expose the other side to airflow
• Rotate it 180 degrees to ensure all areas get air exposure

When to Call a Professional (36-Hour Mark)

• If the mattress is still noticeably damp after 36 hours of active drying
• If you smell any musty or sour odors developing
• If you notice any discoloration or dark spots appearing

The 48-Hour Deadline: Remember, you have 48 hours maximum before mold takes hold. If your mattress isn’t completely dry by hour 48, it’s safer to replace it than risk your health.

When Should You Hire a Professional Cleaning Service to Dry a Mattress?

• Quick answer: Call a professional if your mattress was heavily soaked for over 2 hours, you don’t have access to a wet/dry vacuum and dehumidifier, or you want insurance documentation for a claim—but know that DIY methods work for most spills and accidents.

If you need to dry a heavily water-damaged mattress and don’t want to risk the likelihood of a DIY solution not working, you may want to consider a professional cleaning service.

These companies possess the necessary equipment, specialized techniques, and expertise to thoroughly assess your mattress.

Then, they can recommend the safest and most effective drying method to restore the mattress to its original condition.

Find a Profesional Restoration Service

Finding a professional restoration company can be a crucial step in restoring your property after damage from water or another disaster like fire, earthquakes, and mold. It’s best to rely on certified professionals who have years of experience in water damage restoration.

Look for a restoration company that is certified by reputable industry organizations such as the Institute of Inspection Cleaning and Restoration Certification (IICRC) or the Restoration Industry Association (RIA). These organizations ensure that the company meets high standards of professionalism and expertise.

You can also ask the company for references from previous clients, and contact these past clients to ask about their experience with the company. Of course, you can also look at what past online reviews have to say as well about the service.

Let them Inspect the Mattress

Upon scheduling an appointment, the cleaning service will dispatch a technician to your home for an inspection of the damage. Using specialized equipment, the technician will assess the extent of the damage to your mattress and inform you whether or not it can be salvaged. If it can be saved, they will ask you if you want to authorize the mattress restoration process.

Once you have agreed to the restoration, the professional may request your insurance information to assist with seeking reimbursement from your provider, if applicable. If you live in a region prone to natural disasters like hurricanes or floods, it’s recommended to review your flood insurance policy to determine if your mattress is covered in such an event. If it is, you may receive enough to replace the mattress and bypass a restoration.

You may also want to ask what the restoration specialist will do if hidden mold or similar is found during the cleaning process. Such a finding can lead to a re-evaluation of restoring the mattress, after all, and it’s wise to know what you will be on the hook for paying, etc.

Cleaning & Drying the Mattress

The cleaning service will likely first use a high-powered vacuum to remove any dirt, dust, or debris from the mattress surface. If there are any stains or odors on the mattress, the cleaning service may apply a spot treatment solution to remove them.

Then, the cleaner specialist will use industrial-grade fans and dehumidifiers to dry the mattress. The fans will circulate the air, and the dehumidifiers will remove any excess moisture from the air.

Antimicrobial and disinfectant sprays may also be used on the mattress, with a commercial-grade vacuum cleaner to suck up cleaning solutions to keep them from lingering in the bed. As the specialist works to clean and dry the mattress, they will likely take photos of the process for documentation purposes, along with other notes.

How Can Water Damage to a Mattress Happen?

• Quick answer: Common causes include accidental spills (drinks, urine), burst pipes or roof leaks, flooding from storms, high bedroom humidity, improper cleaning with too much water, and even excessive night sweating over time.

Water damage to a mattress can occur in a variety of ways. When it happens, a mattress can be harmful to your health, as it can lead to the growth of mold and mildew, which can cause respiratory issues and allergies.

Here are some of the most common causes of water damage to mattresses.

Accidental Spills

Accidental spills of drinking liquids such as water, coffee, or juice can seep into the mattress and cause water damage. Similarly, urine or blood can cause liquid damage to your mattress. Prevent accidents where you can by limiting drinks in bed, and use a waterproof protector to establish a barrier against other liquids.

See also:

• How to Remove Urine Stains from a Mattress
• How to Remove Blood Stains from a Mattress
• How to Get Sweat Stains Out of a Mattress
• How to Clean Water Stains from a Mattress
• How to Clean Vomit from a Mattress
• How to Get Poop Stains out of a Mattress
• How to Remove Makeup Stains from Mattresses
• How to Remove Coffee Stains from Your Mattress
• How to Remove Ink Stains from a Mattress
• How to Remove Rust Stains from a Mattress

Floods or Leaks

Natural disasters, like floods from rainstorms or hurricanes, or leaks from burst pipes or damaged roofs can cause water damage to mattresses, along with other areas of the home.  When a mattress is exposed to water or even submerged entirely for an extended period from these events, it can become waterlogged.

This absorbed water causes the materials to break down and deteriorate. The internal components, such as the springs or foam, can become damaged or weakened, which can affect the overall support and comfort of the mattress.

The moisture can also promote the growth of mold in the bedroom, leading to funky smells and various health problems. Floodwater can also contain dirt, mud, and other debris that can leave stains on a mattress. If the stains are not treated promptly and properly, they can become permanent. It’s also crucial to note that floodwaters can contain toxins and sewage that seep into your mattress and cause sickness.

For all these reasons, FEMA recommends tossing out your old mattress after a natural flood. Searching professional restoration services for one that can revive a completely soaked and near-ruined mattress is effort and money that is better spent on finding a new mattress.

High Humidity

High humidity levels can also damage a mattress over time, although the damage may be less severe than that caused by floods. Humidity is the amount of moisture in the air, and when the humidity levels are high, the air is saturated with moisture.

Excessive levels of moisture can promote the growth of mold and mildew on a mattress, which can cause health problems and unpleasant odors. Mold and mildew can also weaken the structure of a mattress, along with the absorbed moisture, and cause it to break down more quickly.

High humidity also causes odors to become trapped in a mattress and allow allergens such as dust mites to flourish.

Improper Cleaning

Using too much water or harsh cleaning products when cleaning a mattress can cause water damage. Ideally, it’s best to freshen up and deodorize a mattress using dry methods like baking soda if you can.

However, cleaning a mattress with liquid cleaners may be necessary for stains and such. If that’s the case, it’s important to blot or lightly spray cleaning solution over the affected area, to minimize any liquid seepage.

Sweating

Sweating while sleeping can cause moisture to build up in the mattress, which can lead to mold and mildew growth over time. While sweating is to an extent inevitable, you can take steps to minimize how much you sweat at night.

Naturally, a cooling mattress that deters hot sleeping is one of the best ways to keep sweating down. Opt also for bedding made from natural fibers like cotton, bamboo, or linen, as these materials are more breathable and can help wick away moisture. Make sure your sleep clothes are also loose-fitting, breathable clothing materials with natural fibers to complete the effect.

If needed, we’ve found that a cooling mattress topper can help regulate your body temperature and prevent sweating as you sleep until you can replace your mattress with a model that retains less body heat.

Keep your bedroom temperature cool and comfortable, ideally between 60 and 67 degrees Fahrenheit, to establish a comfy temperature for sleep and to help prevent sweating. During the day, also make sure you drink plenty of water to help your body self-regulate its temperature.

Sleeping with a fan on at night can also circulate air in your bedroom can help keep you cool and prevent sweating.

Wet Bedding

Wet bedding that is not properly dried can seep into the mattress and cause water damage. This is why it’s important to never place damp bedding on your mattress and to change and wash sheets and such if and when an accident occurs.

What If I Spill Water on My Mattress?

• Quick answer: Strip all bedding instantly, press dry towels into the wet area using your full body weight (don’t rub), switch to fresh towels as they saturate, and continue until you’ve removed as much liquid as possible before it soaks deeper.

If you spill water on your mattress, the first thing you should do is act quickly and remove any excess water using a dry towel or clean cloth. First, remove any bedding on the mattress, whether it’s wet or dry, to give you easy access to the surface of the mattress.

Then, press down hard with the cloth or towel to mop up the water. Swap out wet towels with dry ones as needed. This will help to prevent the water from seeping deeper into the mattress.

If the spilled drink was something other than water, such as coffee or tea, you may need to use a specialized cleaning solution or contact a professional restoration company or mattress cleaning service to prevent stains and odors.

However, sprinkling baking soda over the damp area should help deodorize the mattress, along with absorbing any remaining moisture. For a very wet mattress, you can also try cat litter to soak up lingering water droplets, if you have it, but it may not neutralize smells the way baking soda does. If you use litter, press it into the surface to absorb moisture.

Leave the baking soda or cat litter alone for several hours, overnight if possible. Then, use a vacuum cleaner’s upholstery attachment to suck up the baking soda or cat litter. After the entire mattress is dry, you can make the bed with your sheets and pillows and such again.

Does a Mattress Warranty Protect Against Water Damage?

Most mattress warranties do not cover water damage, as it is considered to be a result of improper use or maintenance. Water damage can compromise the integrity of the mattress and affect its performance, leading to potential health and safety issues.

Therefore, it is important to take steps to prevent water damage to your mattress, such as using a waterproof mattress protector and avoiding exposing the mattress to moisture or humidity. If necessary, consider using a dehumidifier in the bedroom.

If your mattress does become water-damaged, it is important to contact the manufacturer or retailer to inquire about their warranty policies and see if there are any options for repair or replacement. However, it is unlikely that the warranty will cover water damage, so it is important to check the terms and conditions of the mattress warranty before making a claim.

Should I Take the Cover Off of a Wet Mattress?

If your mattress has a removable cover and your mattress is wet, you may want to try taking off the cover to help dry the mattress’s materials. Removing the cover will allow more air to circulate around the mattress, which can help it dry faster.

However, this does come with a couple of risks. Often, mattress covers are non-removable for more reasons than just the difficulty of getting a mattress cover back on.

Many mattress manufacturers rely on a material known as fiberglass for flame protection, tucking it away underneath the cover fabric. However, if the cover is removed, this material can escape and irritate a sleeper’s senses. Check if you have a mattress without fiberglass before taking off the cover.

Even if you have a fiberglass-free mattress and can remove the mattress cover without risk to yourself, we must note that this can void your mattress warranty. However, as water damage usually voids the mattress warranty anyway, many owners may decide that they have little to lose by removing the cover fabric.

How to Dry a Wet Box Spring

If water damaged your mattress, there’s a good chance your box spring got wet too. Here’s simple steps on how to dry it properly.

Remove the Box Spring

Take the box spring off the bed frame and move it to an open area where air can circulate around all sides.

Blot Excess Moisture

Use dry towels to press into any wet areas on the fabric covering. The wood frame inside can rot if moisture sits too long.

Apply Baking Soda

Sprinkle baking soda over damp spots on the fabric surface. Let it sit for several hours to absorb moisture, then vacuum it up.

Position for Airflow

Stand the box spring on its side or lean it against a wall at an angle. This allows air to reach both the top and bottom.

Use Fans and Dehumidifiers

Point at least one fan directly at the box spring. If you have a dehumidifier, run it in the same room to pull moisture from the air.

Dry Longer Than You Think

Box springs with wood frames need extra drying time to prevent rot and mold growth. Even if the fabric surface feels dry, the wood inside may still hold moisture. Run fans and a dehumidifier for at least 24-48 hours, or even longer if the box spring was heavily soaked.

Check for Wood Damage

After drying, inspect the box spring for these warning signs:

• Soft or spongy wood when pressed
• Dark stains or discoloration on the wood frame
• Musty smell that won’t go away
• Warping or splitting of wood pieces

If you see any of these signs, the box spring likely has permanent damage and should be replaced. A damaged box spring won’t properly support your mattress and can contribute to mold problems.

What Drying Mistakes Make Mattress Damage Worse?

• Quick answer: Using high heat (hairdryers, space heaters, direct sunlight on foam/latex), skipping the extraction step and going straight to fans, laying the mattress flat instead of vertical, and sleeping on it before fully dry all worsen damage and speed up mold growth.

Don’t use high heat—hairdryers, heating pads, and direct heaters melt memory foam and synthetic fibers, creating permanent damage worse than the original wetness.

Using High Heat Sources

Never use hairdryers on high settings, space heaters pointed directly at foam, or heating pads to speed drying. Heat accelerates bacterial growth instead of killing it, and causes different materials to react badly:

• Memory foam: Melts, warps, or develops permanent lumps and indentations
• Latex: Hardens, yellows, and loses its flexible comfort properties
• Synthetic fibers: Melt or scorch, creating rough damaged areas

The only safe heat is gentle room-temperature air circulation from fans.

Skipping the Extraction Step

Starting with fans and baking soda while liquid pools underneath wastes critical time. Deep moisture resurfaces after the surface dries, requiring you to start over. Towel pressure + wet/dry vacuum removes 70% more liquid than air-drying alone—always extract first.

Laying Mattress Flat During Drying

Placing a wet mattress flat traps moisture between the mattress and floor, blocks airflow to the bottom surface where moisture settles, and doubles drying time. Standing the mattress vertically or at an angle allows air circulation on both sides.

Using Scented Products to Mask Odors

Spraying air freshener or using scented cleaning products covers smells without removing moisture or killing mold. Chemical residues create breathing irritation during sleep. Use unscented baking soda instead—it absorbs both moisture AND odors at the source.

Sleeping on Damp Mattress “To Test It”

Your body weight pushes moisture deeper into core layers where it can’t evaporate. Body heat creates a humid microclimate perfect for mold growth. One night undoes hours of drying progress. Wait until completely dry to the touch.

Not Monitoring Humidity Levels

Drying a mattress in a humid room (above 60% humidity) means evaporated moisture just re-absorbs into the mattress. Always run a dehumidifier to keep room humidity below 50% during the drying process.

How Do I Know If I Need to Replace a Water-Logged Mattress?

• Quick answer: Replace immediately if water came from sewage/toilet overflow/flooding, if you see any mold growth (white fuzz or green/brown/black spots), if musty smell persists after drying, or if the mattress is still damp after 48 hours.

Water damage can compromise the integrity of a mattress and affect its performance, leading to a range of potential health and safety issues from mattress mold and unsupportive materials. If you suspect that your mattress has been water-damaged, it is important to take action to prevent further damage.

And if it is beyond repair, it is essential to replace the mattress as soon as possible to avoid potential health risks. Here are some signs that you may need to replace a water-damaged mattress.

Visible Stains or Mold Growth

If you notice visible stains or mold growth on your mattress, this is a clear sign that it has been water-damaged. Mold on a mattress can pose serious health risks, and attempting to clean a moldy mattress can spread spores and exacerbate the problem.

How do you know if there’s mold on your mattress? Look for white fuzz or green, brown, or black spots that are fuzzy or slimy. There’s not much you can do once a mattress has gone moldy, and it’s best to toss it once you spot mold and replace it with a new mold-resistant mattress.

Unpleasant Odor

A musty or sour smell coming from your mattress can indicate the presence of mold or bacteria caused by water damage. Even if the visible signs of damage are minimal, the odor can indicate a more serious issue.

Sagging or Uneven Surface

Water damage can cause a mattress to lose its shape and support, leading to sagging or an uneven surface. This can cause discomfort and sleep disturbances, and can also put you at risk for falls or injury.

Allergic Reactions or Respiratory Symptoms

Mold and mildew caused by water damage can trigger allergies and respiratory problems in sensitive individuals. If you experience symptoms such as coughing, sneezing, or difficulty breathing while sleeping on a water-damaged mattress, it is important to replace it as soon as possible.

Age of the Mattress

Even if a water-damaged mattress appears to be in good condition, it may be approaching the end of its lifespan. There’s only so long that a mattress provides comfort and support, though how long each mattress lasts depends on its materials.

Still, a mattress that is more than 8 to 10 years old is likely to have lost its support and comfort, even if it has not been damaged by water. And the health effects of an old mattress that has been damaged by water isn’t worth the effort of trying to save it. In our experience, you’re better off replacing it.

Does Mattress Type Affect Water Resistance?

Yes, some types of mattresses are more resistant to water damage than others. Mattresses with foam or latex cores, for example, tend to be more water-resistant than those with spring coils, as the foam or latex can better resist water absorption and damage.

Then again, the density of a foam or rubber mattress can keep it from drying out fast if it does become water-logged. Meanwhile, moisture-wicking air can easily flit between open coils inside a traditional spring bed.

And no matter what type they are, mattresses with water-resistant covers made of materials like polyester or nylon are also more resistant to water damage. These materials can repel water and prevent it from seeping into the mattress.

However, even mattresses with some level of water resistance may still be damaged or destroyed in the event of severe flooding or water damage. We’ve found in our experience that it’s always best to take precautions to prevent water damage whenever possible.

Memory Foam Mattresses

Memory foam mattresses are made with a dense foam material that can absorb water if it is not properly protected. However, some memory foam mattresses are made with special moisture-resistant materials or have a waterproof cover to help prevent water damage.

Latex Mattresses

Latex mattresses are made with a natural or synthetic rubber material that is naturally resistant to water. The material is also breathable and can help prevent mold and mildew growth.

Innerspring Mattresses

Innerspring mattresses are made with a core of metal coils that are usually wrapped in foam or fabric. These mattresses can be more resistant to water damage than other types of mattresses as they can dry quickly thanks to thin padding and such. However, there’s also a risk of the metal coils rusting from water exposure and losing support.

Hybrid Mattresses

Hybrid mattresses combine the support of innerspring coils with the comfort of foam or latex layers. Depending on the specific materials used, hybrid mattresses can be more or less resistant to water damage.

Air Mattresses

Airbed mattresses have an inflatable core that is usually covered in foam or fabric. While the core itself may not be affected by water, the foam or fabric covering can be susceptible to water damage, giving space for mold to flourish in damp conditions.

Waterbeds

Waterbeds are specifically designed to hold water and are less likely to suffer from water damage than traditional mattresses. They are made with sturdy materials such as vinyl, a water-resistant material that helps to prevent water from seeping into the bed. However, waterbeds can still be susceptible to punctures or leaks which can cause water damage.

Additionally, if the waterbed is not properly maintained, mold and mildew can grow on the surface, leading to health issues. To prevent water damage, it’s important to follow the manufacturer’s instructions for proper maintenance and to inspect the waterbed regularly for any signs of damage or leaks.

How to Prevent Future Water Damage?

Regular mattress maintenance helps you catch moisture problems early and prevent major water damage. Follow this simple schedule:

Monthly Checks (First of Every Month)

• Strip all bedding and visually inspect the entire mattress surface
• Look for any stains, damp spots, or discoloration
• Sniff for musty or unusual odors
• Check the mattress protector for any tears or worn areas
• Wash your mattress protector according to manufacturer instructions

Quarterly Maintenance (Every 3 Months)

• Vacuum the entire mattress surface with your upholstery attachment
• Rotate the mattress 180 degrees (head to foot)
• If you have a double-sided mattress, flip it over
• Check under the mattress for any moisture on the bed frame or floor
• Inspect your bedroom for signs of high humidity (condensation on windows, musty smell)

Twice-Yearly Deep Care (Spring and Fall)

• Strip the bed and let the mattress air out for a full day
• Open windows to allow fresh air circulation (weather permitting)
• Sprinkle baking soda over the entire surface, let sit for several hours, then vacuum
• Inspect the box spring or bed base for any signs of moisture or damage
• Replace mattress protector if it shows any wear or damage

After Any Incident

• Immediately address any spills, accidents, or moisture exposure
• Don’t wait until your next scheduled check
• Follow the drying steps outlined in this article right away

And track how old your mattress is! Keep a record of when you purchased your mattress. Most mattresses last 8-10 years with proper care.

If your mattress is approaching this age and experiences water damage, replacement is usually the better choice than attempting restoration.

Your Emergency Mattress Drying Action Plan

Save your mattress by following these time-stamped steps. Start within the first hour for best results.

Immediate Extraction (0-15 minutes) — Start NOW

• Strip all bedding completely and move mattress to open area if possible
• Press dry towels into wet areas using full body weight (don’t rub)
• Replace saturated towels with fresh ones—repeat until towels stay mostly dry
• Run wet/dry vacuum over area in multiple directions for 5+ minutes minimum
• Assess wetness level: Can you lift one corner easily? If mattress feels heavy, it’s severely soaked

Deep Absorption (15 minutes – 4 hours)

• Sprinkle thick baking soda layer (1-2 boxes for large spills) across entire damp area
• Press baking soda gently into surface to increase contact with moisture
• Let sit minimum 4 hours (overnight for heavy saturation is better)
• Vacuum thoroughly with regular vacuum’s upholstery attachment to remove all baking soda

Continuous Airflow Setup (Ongoing – 8 to 48 hours)

• Position high-powered fan 2-3 feet from mattress, aimed directly at wet spot
• Set up dehumidifier in same room on highest setting (target: below 50% humidity)
• Prop mattress vertically against wall OR on sturdy blocks/chairs for airflow on both sides
• Open windows ONLY if outdoor humidity is lower than indoor (check weather app)
• If weather permits, move mattress outside to shaded area (avoid direct sun on foam/latex)

Monitoring Schedule (Every 2-4 hours for first 24 hours)

• Hour 2: Press hand firmly on wet area for 30 seconds—still cool/damp? Continue drying
• Hour 4: Rotate/flip mattress to expose different surfaces to airflow
• Hour 8: Check for any musty smells developing (early mold warning sign)
• Hour 12: Reposition fans to target any remaining damp spots
• Hour 24: Full assessment—is mattress completely dry to touch? If no, extend drying

24-48 Hour Mark: Decision Time

Still damp after 24 hours?

• Add second fan aimed at opposite side
• Apply fresh baking soda to remaining damp areas, wait 2-4 hours, vacuum again
• Increase dehumidifier setting or move to smaller room for concentrated drying
• Move mattress outside if weather allows (shaded area only)

Completely dry after 24 hours?

• Do final smell test—any musty or sour odor means hidden mold (replace mattress)
• Inspect entire surface for any discoloration or dark spots (mold indicators)
• Press firmly on multiple areas—should feel room temperature, not cool
• If all checks pass: proceed to protection step below

Still damp at 36-hour mark?

• Contact professional restoration service for assessment
• Document condition with photos for potential insurance claim
• Begin researching mattress replacement options as backup plan

REPLACE IMMEDIATELY if at ANY point:

• You see white fuzz or green/brown/black fuzzy spots (mold growth)
• Musty or sour smell develops and won’t go away
• Mattress is still damp at 48-hour deadline
• Water source was sewage, toilet overflow, or outdoor flooding

Post-Drying Protection (Once completely dry)

• Purchase and install waterproof mattress protector before using bed again
• Set monthly calendar reminder to inspect mattress for moisture/stains
• Document this incident (date, cause, methods used) for future reference
• Consider bedroom dehumidifier if you live in humid climate (prevents future issues)

Supplies Checklist (Gather before starting)

Essential (you need these):

• 10-15 dry towels (bath or beach size)
• Wet/dry shop vacuum (rent from hardware store if needed: $30-50/day)
• 2-4 boxes baking soda (more for large spills)
• High-powered fan (box fan or floor fan)
• Dehumidifier (essential for humid climates)

Helpful (nice to have):

• Humidity meter ($10-20) to monitor room conditions
• Sturdy blocks, bricks, or chairs for elevating mattress
• Regular vacuum with upholstery attachment
• Rubbing alcohol (for mold prevention wipe-down)
• HEPA air purifier (captures mold spores)

Frequently Asked Questions

Is a mattress ruined if it gets wet?

Not necessarily. If you dry it completely within 48 hours, most mattresses can be saved. However, water that sits longer than 48 hours causes mold growth, structural breakdown, and permanent odors that make the mattress unusable and unsafe.

How can I tell if my mattress is completely dry?

Press your hand firmly on the affected area for 30 seconds. If you feel any coolness, dampness, or see your handprint remain visible after you lift your hand, moisture is still present and the mattress needs more drying time. The surface should feel room temperature and show no darker wet spots.

Will a wet mattress always develop mold?

A wet mattress will develop mold if it stays damp for more than 48 hours. You can prevent mold by drying it completely within that timeframe. Mold spores need moisture and time to establish colonies, so quick action is your best defense.

Should I flip my mattress over while drying it?

Yes, flip and rotate your mattress every few hours during the drying process so air reaches all surfaces and moisture doesn’t settle in one area. This is especially important for double-sided mattresses.

How can I tell if my mattress has mold, and can I save it?

Look for white fuzz or green, brown, or black spots that appear fuzzy or slimy, and smell for musty or sour odors even if you can’t see surface mold. If you see any mold or smell mustiness, replace the mattress immediately—mold grows deep inside layers where you cannot clean it safely.

Does water damage a memory foam mattress?

Water can damage a memory foam mattress by causing it to absorb moisture, which can lead to mold and bacteria growth. Memory foam mattresses may also lose their shape and support when wet, making them uncomfortable to sleep on. Depending on its material density, a memory foam mattress can also be slow to dry, worsening the water damage.

Can I still use a box spring if it gets wet?

Do not use box springs that are wet or damp until they are completely dry. Drying a box spring is typically easier than drying a mattress. Run a fan and dehumidifier near the box spring for an extended period to ensure the wood is completely dry and prevent rotting. Let these run longer than you think necessary, just to be certain.

What’s the difference between a damp mattress and a soaked mattress?

A damp mattress feels slightly moist to touch and shows small wet spots you can blot up with towels. A soaked mattress has liquid pooling on the surface, feels heavy when you try to move it, and shows wet areas larger than 12 inches across. Soaked mattresses need immediate wet/dry vacuum extraction before absorption methods will work effectively.

Can I use a hairdryer to speed up mattress drying?

You can use a hairdryer only on the cool or low setting for small wet spots. High heat damages memory foam and synthetic materials in your mattress. For latex mattresses especially, avoid any heat sources including hairdryers and direct sunlight, as heat can cause yellowing and hardening that affects comfort.

Can I use rice to dry my mattress?

No, rice does not work for drying mattresses. While you may have heard that rice helps dry out wet phones, this method is ineffective for mattresses. Rice lacks the absorption capacity needed for mattress-scale moisture—a wet mattress can hold gallons of water that rice simply cannot absorb.

Use baking soda instead, which absorbs 10 times more liquid per volume and also neutralizes odors that rice cannot eliminate.

Can I sleep on my mattress while it’s still drying?

Never sleep on a damp mattress. Your body weight pushes moisture deeper into the core layers, and body heat creates a humid environment perfect for mold growth. One night can undo hours of drying progress. Wait until the mattress is completely dry to the touch.

How do I know when to give up and replace the mattress?

If your mattress is still damp after 36 hours of active drying, developing any musty smell, or showing dark spots/discoloration, it’s time to replace rather than continue trying to save it. The 48-hour deadline is firm—mold becomes a permanent health hazard once it establishes colonies in the mattress core.

What should I do with a mattress that can’t be saved?

Contact your local waste management for bulk pickup (many offer free mattress collection), search for mattress recycling programs in your area, or ask if the mattress retailer offers old mattress removal when you purchase a replacement. Never abandon a mattress on the curb without scheduling pickup—many cities fine illegal dumping.

Bottom Line: Act Fast, Dry Thoroughly, Know When to Replace

A wet mattress becomes a mold hazard in 48 hours, but you can save it if you start extraction and drying within the first hour. The combination of towel pressure, wet/dry vacuum, baking soda absorption, and continuous fan + dehumidifier airflow gives you the best chance of complete drying before the deadline.

Your success depends on three factors: how quickly you remove standing liquid, how thoroughly you set up airflow equipment, and how honestly you assess whether the water source or visible mold makes replacement necessary instead.

Don’t gamble with your health by trying to save a questionable mattress. If you’ve passed the 48-hour mark, detect any musty smell, or see any mold spots, replacement is your safest and smartest option.

Protect your next mattress from day one: Browse our waterproof mattress protectors that block liquids while maintaining breathability. Every protector installs in under 5 minutes and can save you from ever dealing with this emergency again.

Need a replacement instead? See our mattress quiz to find the right support level, size, and materials for your sleep style, with real user reviews for each to guide your decision.

Saved your mattress successfully? Share your experience in the comments below to help others facing this same emergency. Bookmark this guide now for future reference, and consider sharing it with friends who might need this information someday.