The first from memory was Kingspan (they had taken over the company that made the panels originally), the membrane was integral to / bonded to the insulation and had a lap at each panel, the underside was trapezoidal steel (also bonded to the insulation), The material was deemed not to need the separation membrane and OK to seal to with the Henry Sealant that Solion supply.
The second, smaller was Sarnafil, and the under panels are Sarnafil walkway / protection sheet that were supposedly welded together (the roofer had forgotten to install them and did it in a hurry, it wasn't 100% to the manufacturers spec as to how it should have been installed, however the Clerk of Works had signed it off for us to install on, so we did
Yes that is an LPS, no we didn't bond anything to it. as per the M&E spec that we received, (sometimes I like dealing with large contractors
) we had to comply with their specifications no variatiosn were allowed. I had offered to install a 30kWp system foc , they turned it down for a 2.5kWp system to meet SAP.
One of the nice ironies of this install is that the owning client has a formal policy of refusing to install on flat roofs
They had no choice because of the building regs / SAP calcs
It's great for low ballast, low profile, speed of install, as a mounting system it's expensive made up for by the reduction in labour costs.
The top one we we did with a team of 3 in 3 days plus 1 1/2 sparks to do the inverters, DC and stainless steel traywork
Materials delivered to site Monday lunchtime, installed commissioned and away by Thursday evening, (3 SMA 15000TL's )
