Roof sheeting
Roof sheeting
(OP)
what are the pros and cons of standing seam and clip seal profiled roof sheeting products against through fix systems? I understand that there are lightening protection requirements that mean a 0.5mm sheet must be used otherwise a system of tapes must be provided which would require through fixing, thereby negating some of the adavntage of a standing seam system.






RE: Roof sheeting
You can get over this by discussion with Technical Department of the purlin manufacturer you propose to use, and usually requires additional bracings and diagonal tie wires be provided.
I have used the CORUS KALZIP system, and this has minimum flange widths for purlins also, which is sometimes greater than that required for structural purposes.
RE: Roof sheeting
The gasketing washers used in exposed fastener systems harden with time and allow water intrusion.
RE: Roof sheeting