PSA: I keep seeing guys not using a seam roller on the backing after heat welding.

I was helping a buddy finish a big commercial job in Springfield and the seams started lifting after a week because he just pressed the top with his knee. I mean, you gotta roll the backing to really fuse it, right? What's your go-to method for making sure those seams stay down for good?

3 comments

3 Comments

sammartinez9d agoMost Upvoted

Honestly, that Springfield job might have had a moisture issue in the slab. Seen it before where a perfect seam fails from below. A roller is good, but if the concrete wasn't fully dry or the adhesive was wrong for the climate, it's all coming up anyway. What was the moisture reading before you guys started?

angelam809d ago

Yeah, moisture can kill it for sure. We always roll the seam twice, once right after welding and again once it's cooled down a bit. That second pass really locks it in.

the_miles9d ago

That's a solid point about checking the slab first. A good roller technique is useless if you're sticking it to a damp floor. The moisture test is the real first step, not the tool you use after.