I am replacing kitchen tile with vinyl planks or engineered hardwood. After ripping out the backer board with tile, I am left with hundreds of screws, set every two inches in a rectangular grid. Is there an efficient removal technique?
If the heads of screws are in good condition(clean) a drill/driver probably best bet to remove. Dirty or damaged heads, a hammer is useful, either pull them up or hammer them down. If hammering them down, make sure nothing underneath them, gas or water lines/pipes, electrical cables, someones head.