February 7, 20233 yr Hope someone can help with this, what is the requirement for plasterboard covering a new RSJ in a two story extension?
February 7, 20233 yr You’ll need to achieve 30 minutes fire protection but it’s not as simple as putting a bit of plasterboard over the beam. Check out the following. https://www.british-gypsum.com/specification/white-book-specification-selector/steel-protection?system[0]=6796
February 7, 20233 yr We used intumescent paint on beams that were sitting on their own, or pink board for areas that had a few and it was more economical that way. You have to make sure if boarding you have the board running fully around, i.e. you'll need an upstand where it ends.
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