Before You Start
You'll need:
| Item | Use |
|---|---|
| Vinyl or inflatable repair kit | Patches and adhesive |
| Dish soap and water | Finding the hole |
| Spray bottle or sponge | Applying soapy water |
| Marker | Marking the hole |
| Rubbing alcohol and a clean cloth | Cleaning the area |
| Fine sandpaper (optional) | Roughing up a flocked surface |
| A heavy book | Pressing the patch |
Step 1: Make Sure It's Really a Leak
Not every soft-by-morning air mattress has a hole.
| Sign | Likely Cause |
|---|---|
| New bed, soft after the first few nights | Material stretching |
| Softer on cold nights | Temperature drop |
| Fully flat or losing air within hours | A real leak |
| Bulge on one side | Internal beam failure |
| Hissing near the valve | Valve leak |
Inflate the mattress fully and leave it for several hours without anyone on it. If it's noticeably softer, it's leaking.
Step 2: Find the Leak
Work from the easiest checks to the hardest:
- Check the valve first. Make sure the plug is fully seated and the pump (if built-in) is closed.
- Listen and feel. Inflate it firmly, press down and move your hand or cheek slowly over the surface to feel escaping air.
- Use soapy water. Mix dish soap and water, then spray or sponge it over the mattress section by section. Bubbles form where air escapes.
- Check the seams and underside, where most punctures and wear happen.
- Mark the hole with a marker, then wipe off the soap.
For very small leaks, you may need to check the whole mattress twice.
Step 3: Prepare the Surface
- Deflate the mattress completely.
- Clean the area with rubbing alcohol and let it dry.
- For flocked (velvety) tops, lightly sand the area so the patch can bond to the vinyl underneath, then clean again.
- Lay it flat on a hard surface.
Step 4: Patch the Hole
Using a Repair Kit
- Cut the patch so it extends at least half an inch past the hole on all sides, with rounded corners.
- Apply adhesive if the kit uses glue.
- Press the patch on firmly, smoothing out bubbles from the center outward.
- Put a heavy book on top.
- Let it cure for the time the kit recommends before inflating.
Temporary Fixes Without a Kit
| Fix | How Long It Lasts | Notes |
|---|---|---|
| Duct tape | Short-term | Works on smooth vinyl; peels on flocking |
| Bicycle tube patch | Short to medium | Works on smooth surfaces |
| Hot glue | Short-term | Can melt thin vinyl; test first |
| Nail polish (pinholes) | Short-term | Tiny holes only |
These get you through a night. Replace with a proper vinyl patch as soon as you can.
Step 5: Test the Repair
Inflate the mattress and leave it for several hours. Check the patch with soapy water. If it still leaks, look for a second hole or re-patch.
Fixing Valve Leaks
| Problem | Fix |
|---|---|
| Plug not seated | Push it in fully; check for debris |
| Cracked or warped valve | Replace the valve if the maker sells one |
| Leak around the valve base | Seal with vinyl adhesive |
| Built-in pump leaks | Check the manufacturer's instructions or warranty |
Valve leaks are hard to patch, because the area moves and bends. Check the warranty before you try.
When an Air Mattress Can't Be Fixed
- Internal beam failure: a bulge or bubble forms. Usually can't be repaired.
- Long seam splits: patches rarely hold on curved seams.
- Many punctures: if you find several, the material may be wearing out.
- Built-in pump failure: may be covered by warranty; otherwise replace the pump or the bed.
If your mattress has one of these problems, it's time for a new one. See our guides to the best air mattress and air mattress alternatives.
Best for: Guest beds, temporary sleeping and car or cabin camping with power
| Type | Inflatable air mattress |
|---|---|
| Firmness | Adjustable by inflation |
| Heights | 13", 16" or 20" (varies by size) |
| Sizes | Kids, twin, full, queen and California king |
| Pump | Built-in electric pump (patented, per King Koil) |
| Inflation | About 60 sec (twin) to 2 min (Cal king), per King Koil |
| Trial | 90-day money-back guarantee |
| Warranty | See King Koil's current terms |
- Fast setup with a built-in pump
- Raised 20-inch versions are easy to get in and out of
- Wide size range, including Cal king
- Needs an outlet for the built-in pump
- Not designed to replace a permanent mattress
If you're replacing a guest air mattress, the King Koil has a built-in pump, raised heights and a 90-day money-back guarantee. See our King Koil review.
How to Prevent Air Mattress Leaks
- Use a ground cover or rug under the mattress.
- Keep pets off or cover the mattress with a thick blanket.
- Don't overinflate, which strains seams.
- Don't exceed the weight limit.
- Keep it away from sharp edges, furniture legs and rough walls.
- Store it folded loosely in a cool, dry place.
- Keep a patch kit with the mattress.
Is It Time to Switch to Foam?
If you keep patching, a folding foam mattress might be the better guest bed.
Best for: Floor beds, sleepovers, camping and occasional guests
| Type | Folding foam pad |
|---|---|
| Thickness | 3" or 4" |
| Sizes | Single (75" x 25") to king |
| Foam | Gel AeroFusion Foam over firmer BraceSleeper Foam |
| Cover | Jacquard |
| Firmness | Firm support with a softer top, per EGOHOME |
| Trial | See EGOHOME's current terms |
| Warranty | See EGOHOME's current terms |
- Folds into thirds for storage
- Works on the floor or on top of an old mattress
- Single and twin sizes sit at the very bottom of the price range
- Not a replacement for a full mattress for nightly adult use
- Only 3 or 4 inches thick
The EGOHOME Tri-Fold folds into thirds and stores in a closet, with nothing to leak. See our guide to foldable floor mattresses for adults.
Frequently Asked Questions
How Do I Find a Small Hole in an Air Mattress?
Inflate it firmly, then listen and feel for escaping air. If that doesn't work, spray or sponge soapy water over the surface and watch for bubbles. Mark the hole once you find it.
What Is the Best Way to Patch an Air Mattress?
Use a vinyl repair patch kit made for inflatables. Clean and dry the area, apply the adhesive or self-adhesive patch, press it flat and let it cure as directed before inflating.
Can I Patch an Air Mattress Without a Kit?
As a temporary fix, some people use duct tape or a bicycle tube patch. These are short-term repairs. A vinyl patch kit lasts longer.
How Long Should an Air Mattress Patch Dry?
Follow the kit's instructions. Glue-based patches often need several hours or overnight before inflating.
Can You Fix a Leak on an Air Mattress Seam?
Small seam leaks can sometimes be sealed with flexible vinyl adhesive, but seam and internal beam failures often can't be repaired reliably.
Why Does My Air Mattress Still Lose Air After Patching?
There may be a second hole, the patch may not have sealed, or the air loss may be from the valve, temperature or stretching rather than a hole.
The Bottom Line
Most air mattress leaks are small punctures: find them with soapy water, clean and dry the area, apply a vinyl patch and let it cure. Check the valve first, and know that seam splits and internal beam failures usually mean it's time for a new bed.