DAP® FAST PATCH is a high-performance, multi-purpose powder filler that mixes easily and applies smoothly to provide tough, durable repairs to walls and ceilings. It fills holes up to 20mm deep. It has strong adhesion to a wide variety of surfaces. Once dry, it sets hard and can be filed, drilled, nailed, screwed or chiseled. It won’t crack or shrink. Ideal for small and large jobs. 30 minute working time, 60 minute set time (depending on depth of fill, temperature & humidity). No priming needed. Won’t flash paint. Easy to mix, apply & sand. Mix only what you need. Interior use.