DAP FASTPATCH 30 is a high-performance, multi-purpose powder patching compound formulated to set fast and dry hard. It allows you to finish interior repair projects in less time than traditional patching compounds, which can take as long as 1-5 hours to dry. It sets hard in 30 minutes, so you can patch and paint in one day. It's easy to mix, apply and sand. No priming needed before painting. This powerful patch may be filed, drilled, nailed or chiseled and provides exceptional anchoring strength for fasteners. Won't shrink or crack. High compressive strength and provides superior impact resistance for drywall repairs.