I’m looking for some advice about assembling some fire door casings that I have bought. I was hoping someone could tell me the best way to assemble them. My doors are unusual sizes so I bought casings which haven’t been rebated. I have researched online and have found most of the advice I need apart from the best way to cut them to assemble correctly. I don’t want to mess it up so hopefully someone here can advise me. As I understand it I mark the head section where the jamb meets it and then cut to the rebate level and then screw to fix? I am a bit confused about the channel for the intumescent strips as this will continue through the head when I fix them together – is this usual or am I missing something? Thanks to anyone who can offer me advice!
View media item 64577
View media item 64577