Hi chaps,
Is there a knack to straightening a bowed PIR board? I have a few 1.2/2.4's 70mm non foil that have a 15mm bow and I really need them to lay flat against plasterboard. There's no simple way to apply fixings in the middle because I'm sliding them in to a stud cavity. The bow is across the short side.
I've done the obvious for now: they're on the floor with some weight on them, but I'm not confident.
Thanks
Is there a knack to straightening a bowed PIR board? I have a few 1.2/2.4's 70mm non foil that have a 15mm bow and I really need them to lay flat against plasterboard. There's no simple way to apply fixings in the middle because I'm sliding them in to a stud cavity. The bow is across the short side.
I've done the obvious for now: they're on the floor with some weight on them, but I'm not confident.
Thanks