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Flat roof mounting options


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I've been speccing my solar install for a couple of months have a pretty good idea of what I'm after by now - 8KW Sunsynk with 12 JA Mono Perc and one LiFePo4 battery (type TBC) to start. Now it's figuring out all the non-glamerous details such as required cable runs, panel mountings, breakers, isolators and the like. Anyway, I'll be mounting on an IBR flat roof and would like to tilt the panels 30 degrees, but the moutning systems seem to be roughly the same price as the panels themselves (crazy, I know!). Does anyone have any more realistically priced roof mouting suggestions?

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If space is not an issue then over sizing the pv array ends up cheaper than specialised mounting kit for the optimal angle. 

I looked into at the time of my install and just decided to add more panels instead as the cost of the mounting system was ridiculous. 

Mine is on IBR with enough space to for 24kwp of solar panels. It's also not visible if its flat mounted on my carport. 

If you can weld then you could look at making your own using square tubing making a few triangles at the right angle and mounting these on your IBR roof. Steel working companies could even make them up for you with predrilled holes based on your requirements. Two triangles per panel could work. Something like @Vassenmade to mount his panels against his walls. 

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13 minutes ago, Achmat said:

If space is not an issue then over sizing the pv array ends up cheaper than specialised mounting kit for the optimal angle. 

I looked into at the time of my install and just decided to add more panels instead as the cost of the mounting system was ridiculous. 

Mine is on IBR with enough space to for 24kwp of solar panels. It's also not visible if its flat mounted on my carport. 

If you can weld then you could look at making your own using square tubing making a few triangles at the right angle and mounting these on your IBR roof. Steel working companies could even make them up for you with predrilled holes based on your requirements. Two triangles per panel could work. Something like @Vassenmade to mount his panels against his walls. 

How did you fix your panels to the IBR?

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1 hour ago, Speedster said:

Really nice. I'm going to try find a way to get my panels to at least 15 degrees. There's quite a big gap between flat and 15, but 15 to 30 isn't soooo much. 

These bolts are quite long so you could have the one rail higher than the other giving some tilt. One side of the panel would then be higher. I think the most tilt you'll get is probably between 8° to 10°. Not sure if you get the bolts any longer which will allow for more tilt. 

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