How to Patch and Fix an Air Mattress (Tips for Sealing Holes) (2023)

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Air mattresses and air beds are great when you have guests over or when you’re camping. But what if yours keeps deflating? There are several techniques you can try in order to make a permanent fix that’ll last for years but there are also some really bad pieces of advice out there on how to fix a hole in an air mattress that you should watch out for. We’ll guide you from locating the leak, using a patch kit (or its alternatives), and finally how to proceed after this “operation”. We know that you want this mattress to serve you well even after you fold and store it for some time.

Test for a Leak

Air mattresses tend to lose air with time – even the best ones. This is not a sign of a faulty mattress; it’s completely normal. You should pump air into your mattress from time to time to keep it firm. But you do have a problem if a lot of air escapes in a short period of time.

For example, there probably is a hole in an air mattress if it gets visibly deflated after a single night. So, to test this out – inflate the mattress and sit on it.

How quickly the air mattress deflates depends on the size of the air leak. You may notice the change within a few minutes if the damage is severe, or in a few hours if it’s a slow leak. You may need to leave it inflated overnight and check back on it in the morning.

Find the Leak

Common spots for air to escape are the seams, the air valve, or the bottom part of the mattress (if it was laid over something sharp or on an uneven surface).

Before you start looking for the opening, re-inflate the air mattress first. It has to be very firm because the high pressure will be pushing the air out faster so it’ll be much easier for you to hear hissing or feel the air coming out.

Next, you’ll have to:

• check the valve
• put the mattress upright and examine all sides, listening closely

If you still don’t find the air mattress leak, try to:

• move a wet hand 2-3 inches away from the surface
• place a tissue on the mattress
• use the soapy water method

Once you find the source of escaping air, you have to mark the leak with a permanent marker.

Check the Air Mattress Valve

The first suspect that you should check on should be the valve. Hold your hand next to the valve and try to feel if there’s air coming out.

You can also bring your ear really close and listen for a hissing sound. The best-case scenario is that the valve cap isn’t tightened completely. Otherwise, valve issues are usually something that the manufacturer has to repair.

Position the Mattress

If the valve is not faulty, start inspecting the rest of the mattress. You’ll have to put it in an upright position against the wall and then move, turn, and flip the mattress as much as necessary. This way you’ll be able to check the whole mattress easily.

Inspect the Entire Mattress

Put your ear close to the mattress, around two inches, and listen for any sounds coming out of the mattress. Go around the entire surface slowly and listen carefully the entire time.

Make sure not to skip any spots – be thorough. Start on the bottom as it’s the most common place for holes to appear and work your way on all sides and around the seams.

Moisten the Hand and Repeat

If you couldn’t hear or feel any hissing, we may be talking about really small holes. Put some water on the back of your hand. The skin there is quite thin and sensitive and on top of that, when you put a thin layer of water, it’ll be much easier to feel the leak because the movement of air will quickly evaporate the water which will manifest itself in a cooling feeling.

Place a Tissue on Air Mattress

Take some tissue paper, open it up, and place it on your mattress. Air coming out from a damaged air mattress should move the tissue up or away. If it sits still, place the tissue on the adjacent surface and keep repeating until you inspect the mattress completely.

Use Dish Soap and Watch for Bubbles

Add a few drops of dishwashing liquid to a small bucket of water. Stir it well and apply it on the mattress where you suspect the leak may be. Drag a soapy sponge over the surface of the air mattress.

You’ll know you’ve found the leak when you see tiny soap bubbles forming in one spot. It works just like those bubble toys you played with as a kid, except that the escaping air is the one making bubbles here.

Remove the soapy water with a clean wet cloth and let dry for several hours.

Some manufacturers advise against applying soapy water because it may lead to mold. This is only because some people may fail to let the mattress dry completely. So remember, if you end up having to go with soapy water, be sure you pat the mattress dry and then leave it a well-ventilated area in a position that allows the moist area to dry off completely. Don’t put it flat on the floor but rather let it stand on one end until every inch is 100% dry.

Circle the Hole With a Marker

Draw a circle around the leak using the marker. It’s best to use a permanent marker. You definitely need to mark the leak because you won’t be able to find it otherwise once the mattress is deflated.

Now that a big part of the work is done, the air mattress repair can begin!

How to Fix an Air Mattress with a Patch Kit

Your patch kit needs to work on vinyl (PVC) or rubber and contain:

• some sandpaper
• strong glue
• a patch

And you also need some heavy items to press the patch with. If your patch kit includes a patch that’s applied like a sticker, you don’t need any glue.

It’s not difficult to patch an air mattress. You have to deflate it completely, rub the area around the hole with super fine sandpaper, and patch the surface.

Sanding

Sand the whole area that the sealant and patch will cover. It has to be completely clean – the better you do this part, the better your patch will hold.

If the mattress is dirty from use, you should degrease the surface with some water and soap. The last resort is to use nail polish remover or rubbing alcohol (isopropyl alcohol) as a degreaser.

Applying Glue and Patching

Then apply sealant generously and stop. Yes, you should take your time from here. First, allow about a minute for the sealant to slightly dry off. Then, take the patch and think about how best to position it. Then slowly and carefully put the patch on the air mattress and press hard. Hold for about half a minute.

Don’t remove the patch once you’ve applied it because you can ruin your work and the patch won’t stick as well anymore. In case you do get it so wrong that you’ve entirely missed the hole, remove the patch, scrape off the glue, sand it again, and re-patch the area.

If your patch is the sticker-type one, just stick it directly onto the hole.

Put Heavy Items on the Patched Area

When you remove your hand, put some flat and heavy objects on the patch. You can leave some big books on it and leave it for about three hours.

Which Patch Kit to Use?

You can use the patch kit which came with your mattress or a bike tire patch kit. Bear in mind that, unlike bike patch kits or store-bought mattress patch kits, the original air mattress patch kits usually don’t include glue.

If you’re using a bike kit, make sure that the patch itself is large enough to cover the hole and the area around it completely.

If you’re looking for specialized kits for air mattress repair, you may get one of these:

• Thermarest Repair Kit
• Tear-Aid
• Sevylor Repair Patch

How Do You Fix an Air Mattress Without a Patch Kit

We have to start with a bit of a warning here. Most air mattresses have warranties that are valid as long as you use dedicated patch kits. Using a DIY patch made of household objects may get your warranty voided.

For a DIY patch to be successful, you need:

• fine sandpaper
• glue/strong adhesive (Gorilla glue, KrazyGlue, rubber cement, epoxy, or super glue)
• a piece of thin plastic or rubber (and scissors to cut it out)

Completely deflate your air mattress before starting.

Sand the Area Around the Leak

Gently sand the felt off. Make sure you even out the edges of the hole and remove all the coating debris. When the plastic is smooth and bare, it’s ready for the patch.

Use some water and soap if the area is really dirty and greasy. Should this not work, try nail polish remover or rubbing alcohol.

Cut Out Some Soft Plastic

Cut a piece of a thin plastic material large enough to cover the leak itself and about a third of an inch on each side from the leak.

The plastic should be something malleable that doesn’t let the air through, like a piece of tarp or shower curtain.

Add Glue and Patch Up

Add plenty of glue around the hole. Make sure that your glue is compatible with the mattress material. Air mattresses are usually made of rubber or plastic (polyvinyl chloride – PVC), so be sure the glue you have works well with it.

After you add glue, wait for about a minute or so until it’s dried off – not completely, just slightly dry. Carefully place the patch on top of it and apply pressure to form a tight seal. Should there be any excess glue, wipe it off.

Don’t forget to check how long it takes for your glue to dry.

Place a Heavy Object on the Patch

Place some books or another flat object on the patched area and leave for as long as necessary (it depends on the type of your glue).

If unsure, leave it for an extended period of time – overnight or for at least 8 hours.

Test Seal

After enough time has passed and the glue is completely dry, it’s time to test the seal of your air mattress.

Re-inflate the mattress fully. If you’re so unlucky that even your pump is broken, don’t worry – you can still inflate your mattress even without a pump, using a plastic bag or a vacuum cleaner.

Listen for the s-s-s-s-s sound. If there’s no air escaping, you have a good seal.

FAQ on Fixing Air Mattresses

Can I Use Duct Tape Instead of a Patch Kit?

You can try to fix a hole in an air mattress with duct tape, but that won’t be a permanent fix. Duct tape won’t behave well when you repeatedly inflate/deflate the mattress and it tends to lose its hold over time.

You can do a criss-cross patch of 3-4 pieces of duct tape if you want it to last slightly longer, but don’t get disappointed if the air mattress deflates. However, this is a good quick-fix when you’re on the go.

To permanently fix a hole, you need strong glue and a patch to hold it all together.

Can I Use Hot Glue to Fix a Hole in an Air Mattress?

One thing worse than air escaping from your air mattress is it being further damaged with hot glue. Although a glue gun may stand a chance in helping you out here, there is a high possibility of it aggravating the situation.

You would need to know what temperature your hot glue gun develops and what temperature your particular mattress withstands in order to have a chance to do it right. It’s equally (if not more) dangerous to be heating the glue stick with a lighter just above the hole.

Therefore, it’s best to apply glue such as the glue from a kit or the ones we mentioned above.

Why Does My Patch Kit Lack Glue?

It’s common for air mattress manufacturer kits not to include glue. This is because of shipping regulations. However, the instructions should tell you which glue is the best for your air bed.

Can I Use Flex Seal to Fix a Hole in a Mattress?

You can. A really small hole can be fixed with Flex Seal itself but normally you’ll have to use a thin piece of rubber or plastic on top of Flex Seal to seal the hole in an air mattress. Use rubber gloves to keep your hands clean.

How to Fix a Huge Hole in an Air Mattress?

You typically don’t fix large gaping holes in an air mattress because the spot will remain permanently weakened and prone to leaks. It’s best to get a new air mattress in this case.

If you really want to try, get a large piece of material that’s close to the material of your mattress and lots of adhesive. You may even experiment with a large piece of a shower curtain liner or pool liner.

Why is My New Mattress Deflating?

Brand new air mattresses appear as if they’re deflating because the material is still stretching. You shouldn’t use too much air right away because it may break. Rather, make it firm-ish, then use it for a while and let it stretch out. After it softens up, inflate it again and let it stretch out again.

You may need to reinflate the mattress once or twice after buying it. A lot of mattresses have a built-in pump so this shouldn’t be a problem.

If you lie on a mattress for a while and it gets visibly deflated, that is, you can feel it deflating, it definitely has a leak.

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