Deep down, I have always believed that attempting to fix a leaking sleeping pad was a fool’s errand. I’ve plunged several limp inflatable mats into my bathtub in search of streams of tiny bubbles, slapped synthetic patches over the holes, and yet still woken up in the middle of the night on my next trip with a rock jabbing me in the kidney.
But against my lackluster record stands that of Annica Lassesen, a warranty and repair specialist at Exped USA, who has patched an average of 500 mats per year during her three years at the company. Her most stunning successes include a mat with 87 total punctures and one with a 17-inch tear. With roughly 1,500 mats under her belt, Lassesen knows her stuff, and says she’s “all about trying to make resources available to people” so they can fix mats themselves.
We called her up and got her dos and don’ts for those who want to try their hand at sleeping-pad repair—turning this skeptic into a glue believer.
Do: Keep Pets Away
“A good chunk of my repairs lately are from animals. With the record of 87 punctures—we knew a cat did that,” Lassesen says. “Cats and dogs very much enjoy our mats.” It may be cute to see your beloved furry friend snuggle up on your sleeping pad, but pets’ sharp claws pose a significant hazard to inflatable mats. Store them out of reach.
Don’t: Strap It to the Outside of Your Pack
We’ve all done it (or at least considered it): lashing our bulky sleeping pad to the outside of our pack. It may seem like space-saving common sense, but Lassesen warns against this strategy. “Really, it should be protected on the inside,” she says. “Some punctures occur while the mat is in storage mode, so the placement of a sleeping mat while in a backpack is very important.” Keep it separated from sharp tools and utensils.
Do: Spray with Soapy Water
The first and often hardest step is locating the puncture, Lassesen says. She recommends inflating your mat fully before spraying it with a mixture of soap and water. Then apply pressure to the mat and look for bubbles. She also notes that if the mat is wet, and there’s enough pressure, “you can actually hear a bit of a whistle sound from where the air is coming out.”
Don’t: Hesitate to Call in a Professional
There’s a reason why Lassesen considers this the most challenging point of the process. “If somebody can find the puncture, then that’s a huge accomplishment,” she says. Holes that cause your pad to completely deflate overnight can be tiny and nearly impossible to spot, even with the usual at-home tricks. At the Exped lab, she uses a hydraulic dunk tank that can immerse the entire pad under water and put enough pressure on it to clearly show where every single leak is, no matter how small. Also consider sending your mat to a professional if the internal foam is damaged or if you’re just feeling out of your depth. Exped and many other companies offer free repair programs—take advantage of them.