Chamber Safe is a high performance, cementitious resurfacing and refractory
parging material designed to strengthen, streamline, and restore the critical smoke
chamber area in masonry chimneys. This material is non-water soluble, listed to UL
Subject 2505 and meets ASTM E-196, C199, and C401 as a Medium Duty refractory
mortar. Chamber Safe is a registered trademark with U.S. Fireplace Products.
