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Hi everyone,
I just bought 120w monocrystal solar panel for ma vw transporter high top van,
roof is made from fibre glass, any idea how to instal the panel to that type of roof to have solid instalation?
sikaflex 512? is it strong enough?
[quote="sew"]ok.
do i need to leave some gap between roof and panel for ventylation?[/quot
personally i would get or make some brackets to leave a gap for ventilation, but have never personally fitted solar panel, someone will answer your question if you hang on a bit
ok.
do i need to leave some gap between roof and panel for ventylation?
The ready made ones you can buy lift the panel 32mm clear off the roof to allow for ventilation. I made up my own brackets from an aluminium extrusion and used the same sort of clearance.
Yes you need to leave a gap. 25 mm around the edges should be sufficient. At their simplest the brackets should be alloy angle riveted or bolted throught the panel frames allowing the standoff from the roof. Put the panel complete with brackets on the roof & mark out the footprint of the brackets on the roof. Clean footprint area & the brackets & prime using Sika primer. Leave to dry & then apply the Sika adhesive to everything. I put small temporary blocks of wood under may panel at this stage to ensure that the I retained a 2-3 mm layer of adhesive between the brackets & the roof. Remove all surplus adhesive & allow the remainder to set. It's temperature sensitive & is activated by atmospheric moisture. IE it'll go of quicker on a warm humid day.
The saying "sticks like s**t" was made for Sika adhesives. Keep some rags handy
Yes its important that there is a good air gap beneath the panel to cool the underside and you might as well lift the panel sufficiently to be able to clean beneath it.
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