How to Actually Use Expandafoam Without the Mess

If you've ever looked at a drafty window frame or a weird gap in your brickwork and wondered how to fill it, you've probably heard of expandafoam. It's one of those DIY staples that looks incredibly satisfying to use but can quickly turn into a sticky, yellow nightmare if you aren't prepared. It's essentially magic in a can—liquid one second, a rigid, insulating structure the next—but there's a bit of a learning curve if you want to avoid ruining your clothes or your door frames. ...

May 6, 2026 · 6 min · Rodolfo Bonnin