How to Patch a Hole in an Air Mattress

It’s certainly difficult to enjoy a good night's sleep on a deflated air mattress. However, even if the mattress has a puncture, there's no need to throw it away. Finding and fixing a hole in an air mattress is relatively simple and can be done at home with household items and an air mattress repair kit without spending much money.

Understand that air mattresses naturally deflate over time. Before deciding to remove the mattress cover to find a hole, it's important to know that no air mattress can permanently retain air. You'll need to re-inflate the mattress, whether it’s leaking or not.

• For instance, cold air can cause the mattress to shrink. When temperatures drop at night, your mattress may feel softer due to the cold air. A space heater near the mattress can help prevent this issue.
• The air mattress will 'stretch' after purchase. Don’t worry if the mattress feels softer right after being inflated a few times. Your mattress will quickly adjust.

Inflate the mattress to check for leaks. If the mattress deflates significantly after being inflated for a few minutes, it is likely leaking. Try sitting on the mattress after inflating it – typically, it shouldn't sink more than 2.5 - 5 cm under your weight.

• If you’re unsure whether the mattress has a leak, place a heavy object, like a stack of books, on the mattress and leave it overnight. If the mattress is noticeably deflated by morning, it likely has a leak.
• Inflate the mattress again before inspecting for leaks. If the mattress feels soft, inflate it again before proceeding. The higher the internal pressure, the more air will escape from any leaks, making them easier to detect.

Inspect the air valve. Place your hand over the valve to check for escaping air. The valve of an air mattress is typically located next to the pump and resembles a plug that you can remove to deflate the mattress. Unfortunately, air mattress valves are often difficult to repair at home.

• If the valve is broken or leaking, contact the manufacturer for a replacement.

Stand the mattress up in a spacious and quiet room to check for leaks. Most leaks are located on the underside of the mattress, as the mattress is often unintentionally placed over sharp objects. Inflate the mattress and stand it up to inspect the bottom. Perform this check in a large room to allow you to flip, rotate, and move the mattress while inspecting it.

Place your ear 5-7 cm from the mattress surface and listen for a hissing sound. Slowly move your ear across the surface of the mattress to listen for escaping air. If there’s a leak, you’ll hear a faint hissing sound, like someone saying “ssssss.”

• Start with the bottom of the mattress, then check the edges and top if no leaks are found.

Wet the back of your hand and repeat the step above if no leaks are detected. The escaping air will cause the moisture to evaporate quickly, and you’ll feel a cool sensation on your hand. Wet your hand and move it over the mattress surface, about 5-7 cm from it, to check for small leaks.

• You can also lick your lips and check for escaping air, as your lips are the most sensitive part of your body.

Use soapy water to detect bubbles if you still can't locate the leak. Some manufacturers warn that water can encourage mold growth, but this remains one of the most effective methods for finding leaks. Soapy water acts like a child’s bubble-blowing game – a thin layer of water with bubbles will cause the mattress to ‘blow’ bubbles through any holes, revealing the leak’s location. Here’s how to do it:

• Fill a bucket with water and add a few drops (1 teaspoon) of dish soap.
• Slowly wipe the surface of the mattress with the soapy water using a sponge.
• Start near the valve, then check the seams, the underside, and the top of the mattress.
• Where bubbles form, there’s a hole.
• Wipe off the soap after completing the check.

Mark the leak with a pen or sharpie. Once the mattress deflates, it’s nearly impossible to find the leak again, so you need to mark it for easy future repairs.

• If you used soapy water to find the leak, quickly dry the area with a towel and mark it.

Release all the air from the mattress. After finding and marking the leak, you need to deflate the mattress. If you used the soapy water method to locate the hole, you should dry the mattress and let it sit in the sun for 1-2 hours before proceeding with repairs.

Purchase an air mattress repair kit. Almost any outdoor supply store will have a repair kit for air mattresses in the camping section. These kits are small and inexpensive, typically containing adhesive, sandpaper, and patches for tents, bicycle tires, and air mattresses. In an emergency, a bicycle tire patch may also work for small leaks.

• Some companies offer air mattress repair kits that you can find online, such as the Thermarest Repair Kit, Tear-Aid, and Sevylor Repair Patch.
• Make sure the repair kit is designed for use on plastic or vinyl materials.

Release all air from the mattress. You don’t want the air underneath the patch to interfere with the adhesive, so make sure to deflate the mattress completely before proceeding with repairs.

Scrape off the soft fabric around the hole. If the hole is on the top of the mattress, you’ll need to remove the soft fabric layer above it so the patch can stick properly. Use a wire brush or sandpaper to gently rub the fabric layer until only the plastic around the hole remains.

• Some mattress manufacturers refer to this soft material as the 'fleece' layer.

Clean and dry the area around the hole. Use soapy water or a small amount of isopropyl alcohol to clean the leaking area, removing any dirt or sand. Be sure to dry it completely before continuing.

Cut a patch about one and a half times the size of the hole. The patch should be large enough to cover the hole completely, so make sure it’s at least 1 cm larger than the edges of the hole. If the patches you have are pre-cut, use one that’s 1-2 cm bigger than the hole’s edges.

Apply the patch according to the manufacturer’s instructions. Patches typically work in one of two ways: either with a simple adhesive backing or by using a special glue. Regardless of the method, follow the instructions carefully and smooth the patch flat. Avoid peeling it off to make it 'perfect.' As long as the patch covers the hole completely, it should work fine. The patch will stick less effectively if you remove and reapply it.

Press the patch down firmly and evenly. After applying the patch, press it down for about 30 seconds or longer to ensure it sticks properly. Use the palm of your hand or a rolling pin to apply consistent pressure to the patch.

Allow the adhesive to dry for 2-3 hours. You can place a flat, heavy object on the patch to apply additional pressure. Do not inflate the mattress until the adhesive has fully dried.

Inflate the mattress and check for leaks. Press your ear close to the patch to listen for any air escaping. If you don’t need the mattress immediately, inflate it and leave it overnight. Check again the next morning to ensure the leak is sealed.

Be aware that patching the mattress with homemade materials may void the warranty. Many manufacturers require you to use a repair kit or send the mattress to them for professional repairs. While DIY patches can be effective, they may cause your mattress to lose its warranty, so be cautious.

• You can temporarily use fabric tape for repairs, but the adhesive on fabric tape is not designed for permanent bonding with plastic, so it will eventually dry out and peel off.
• Never use hot glue to seal a hole. In most cases, hot glue will melt the surface of the mattress, making the hole larger.

Sand the soft fabric around the hole if the puncture is on the top of the mattress. While the fabric is soft, it prevents the adhesive or patch from bonding properly, which causes the patch to peel off quickly. Use a wire brush or sandpaper to gently sand down the fabric layer until only the plastic surface around the hole remains.

Cut a piece of flexible, thin plastic, such as a shower curtain. If you don’t have a specific patch or can’t purchase one, you can still use household materials to create a patch. Oilcloth and shower curtains are effective and easy to cut to the desired size.

• Ensure the patch is large enough to fully cover the hole, at least 1 cm larger than the hole’s perimeter.

Apply a strong adhesive to secure the homemade patch. Spread glue generously, covering at least the area of the patch. Avoid using craft glue. You need a strong adhesive like super glue, KrazyGlue, or Gorilla Glue to affix the patch securely.

Press the patch into the glue and hold firmly. Apply even pressure to make sure the patch sticks well. Use your fingers to smooth the patch and gently wipe off any excess glue around the edges.

Place a heavy object on the patch and check again after 6-8 hours. Place a few heavy books or similar items on top of the patch to apply pressure while it dries. After several hours, the patch will have adhered firmly to the mattress.

• Inspect areas that are prone to damage, such as seams, bulging spots, or cracked vinyl around the air pump.
• These methods can be used for areas near seams, but these spots are often difficult to patch. You will need to apply more glue and cut the patch to fit properly.

• Spray bottle
• Soap and water
• Marker pen
• Inflatable mattress repair kit
• Sandpaper