Solar panel fixing brackets (1 Viewer)

[stevec]

I intend to install two 130W panels (bau-tech2012) measuring 1295 by 675mm. How many fixing brackets do I need? My last panel (120W) I used one on each corner and two on the long sides. These were the plastic prefabricated types. I see some panels fitted with four pieces of aluminium angle. Would this be ok on panels this size?. Just wondering how much surface area is needed to hold effectively.

 

[jac-in-a-box]

I recently fitted a pair of panels to my roof, the panels were similar in size to yours (1340 x 675)
Used four aluminium angle brackets per panel 3"x 2"x 6" - with the 2" side being fixed to the roof with Sikaflex 221? and screws for extra security...perhaps not totally necessary but for piece of mind I felt it was worth it.
Fitted brackets to panels with M6 stainless steel button screws and nyloc nuts, 2 bolt sets per bracket...none if it is going anywhere!

 

[Techno]

Don't use screws and sikaflex! complete folly @Drexxer

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[vwalan]

i used ally angle on mine years ago . but in recent years ask at a double glazing fitting company . you can get off cuts of nice plastic angle about 3ins wide . makes great mounts . drill and pop rivet to panels . then bond to your roof . even if they charge its only about 12 quid for a 5metre length.

 

[Techno]

I use Aluminium angle and rivets. Generally the frame is more than strong enough to support the glass with no flexing. I would use 150mm long at each end and just put a short bracket in the middle say 50mm. Solid!

These are 1200 long units
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[TheBig1]

ali angle is the cheapest and most secure. dont be frightened to put extra on as if the panels continually flex it will shorten their life span.
I can pick up 2.4m lengths of 50x50x3mm for £12.50 locally

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[Techno]

The frames are hollow double skinned . Drill right through and use 10mm rivets, these will crush on the outer skin and finish flush with the inner.
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DON'T drill within 75mm of the corners as there is a steel internal corner piece that holds the frame together.

EDIT and as pictured turn them in NOT out., much neater and less space required.