CertainTeed Sandable Setting Compounds are lightweight sandable chemically setting powders used to prefill joints, embed joint tape and conceal joints, fasteners and trim accessories on gypsum wallboard. They can also be used for interior patching and repair. They are ideal for heavy fills because they are specially formulated to harden with very little shrinkage in a prescribed time frame. CertainTeed Ready-Mixed Joint Compounds should be used for finishing.

• Lightweight
• Chemical hardening
• Low shrinkage
• Sandable when dry
• Setting time 15 - 25 minutes

18 lb bag