I'm making a porch roof, it'll be about 3' deep and about 5' - 6'
long with a wooden bracket structure to support it. The roof is flat
?polycarbonate sheet from Been and Queued; my worry is that thermal
expansion of this sheet may damage the joints of the brackets and
supporting longitudinal beams, should I improvise some sort of sliding
mounting points? It seems to me that slots for the fixing screws
wouldn't be adequately waterproof; I could glue some mounting slots on
the underside to engage with hooks on the beams, or I could just not
Your thoughts would be appreciated...
* ps - Don't let the EU rule Britannia! *