hi there ive been asked to fit a half hour check fire door and frame the frame i have has grooves cut for the strips but all thats playing on my mind is do i need to router the door for strips or will it be ok just on the frame please answer this asap thanks and any other info you can supplu will be great :?:
if the door did have the trench already routered into it this is for the smoke seal,which is a brush strip. both expand during fire to seal the gap.
I have hung doors with and without the smoke seal depending if the door has been routered to take it