This chisel, along with my Dewalt DW25213 SDS impact drill (impact mode only), quickly removed about 100 square feet of ceramic tile during a kitchen renovation project. The tile was grouted onto a plywood subfloor (it was strong - never cracked in 20 years) but I was able to remove it completely in about 90 minutes without damaging the plywood. Please read my reviews of the Makita GA7020 angle grinder, Makita dust collector 195386-6, and Concord Blades GCL070AHP diamond cup wheel for painlessly removing hardened grout from plywood substrates.