Promafour PROMAFOUR ®-HT JOINTFILLER is a creamy putty/filler based on a mix of clay and an inorganic binder.

It is especially developed for filling and levelling out PROMAFOUR ® construction boards, providing a safe, reliable, robust fireplace protection system developed to resist continuous high temperatures of up to 1000°C.

Due to its consistency, PROMAFOUR ®-HT JOINTFILLER can be easily caulked or trowelled, depending on the application.