This high-temperature Pyromix joint compound by Bomix is a ready-to-use mastic designed to bond, join or point refractory bricks used in construction or to repair fireplaces and wood stoves. It can resist very high temperatures (up to 1,500°C (2,730°F). Designed for indoor use only. Can be applied up to a maximum thickness of 1/8 of an inch. Comes in a 1 L container.