The Screwdriver Test for Finding Rotting Joists Under Your Subfloor
The Screwdriver Test for Finding Rotting Joists Under Your Subfloor Most guys skip the leveling compound. They think the underlayment will hide the dip. It won’t. I spent three days grinding concrete on a job last month just so the floor wouldn’t click like a castanet. That clicking is the sound of a subfloor that…










