Plasterboard is fire resistant but you will need to seal the gap between the wall and the plasterboard. This stops the heat getting between the chimney breast and plasterboard. I know this as I have just done the same thing!
I'm just trying to find what sealant to use. I think this may do the trick.
Can I put plasterboard on chimney breast?
in Plastering and Boarding
Posted
Plasterboard is fire resistant but you will need to seal the gap between the wall and the plasterboard. This stops the heat getting between the chimney breast and plasterboard. I know this as I have just done the same thing!
I'm just trying to find what sealant to use. I think this may do the trick.
https://vault1.secured-url.com/chimney/acatalog/Index_Page_Silicone_Sealants_and_Caulking_Compounds_145.html