Real talk on open cell vs closed cell backer rod
If you're staring at a gap in your driveway or around a fresh window installation and trying to figure out the open cell vs closed cell backer rod debate, you're definitely not alone. It seems like such a small, insignificant piece of foam, but picking the wrong one can actually lead to your sealant cracking, bubbling, or just failing way sooner than it should. It's one of those "hidden" components of a construction project that does all the heavy lifting behind the scenes. ...