I am finishing my basement and had a few friends over to help out with attaching the plywood to the basement floor. In between the basement floor and the plywood was one inch of XPS foam. The next day, I had this feeling that they drilled through the floor. I checked and my worse nightmare came true, they did. They drilled right through the concrete floor…. What can I do to fix this? Epoxy Caulk into each hole?
Thanks,
Dan
Replies
Boy, long bit or thin slab...............
Sometimes help makes for more work.
I would use urethane caulk, adheres to almost everything. Downside, it's thick and doesn't flow out easily.
But, there's a type of urethane caulk that is meant for cracks and it "flows". Seeks out level, so in a crack you need to install backer rod at the bottom of where you want caulk and at the ends (of a slab) so it doesn't flow out.
This would be your friend in this case. The stuff would "leak" down to the bottom of the hole, presumably be stopped by the soil / stone below. It would seal the penetration where you want it to, at the bottom. Caulk woud stay up top and coat the threads-not a bad seal really.
I know it comes in a big tube, might come smaller.
Sikaflex, tremco and ...........................are some brands. Search urethane sealants. You'll find caulk and self leveling caulk.
I'm not sure I understand your concerns.
A Tapcon goes into a small hole, and makes threads in the concrete. Since concrete is itself porous. I don't see how a tightly fitting screw is going to 'leak.'
Remember: leaks work in both directions. Every leak is also a drain. Trapped moisture is what allows mold to grow, and gives basements that 'dank' smell.
If that slab is less than 4" thick, you have far more to worry about.
Agree
that the screws will plug the holes.
Ummm.... what exactly do you mean by "through?"
Why do you think the tapcons went all the way thrrough?
Also agree--unless you've got sub water trying to rise, but that seems doubtful indicated by your foam and plywood installation.
What do you (OP) fear?