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Author Topic: fiber cement roof sheeting and mounting a 30 tube panel  (Read 693 times)
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« on: July 13, 2018, 07:46:41 AM »

Good morning .
just joined the navitron forum - loads to read on here .
I am looking for suggestions to install a evacuated tube array -30 tubes on my roof .
the issue is the roof has a fibre cement sheeting - profile six from marley eterit .over wooden raffters and deck
I am looking at hanger bolts but not sure if the frame that makes up the solar tube frame will be able to be supported on bolts or if it needs to have a sub frame of some sort -
such as an A frame - But the roof already has a 30 degree pitch so would need to lower the A frame angle
any suggestions would be appreciated
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« Reply #1 on: July 13, 2018, 08:27:54 AM »


Used these for my solar PV on a slate roof but would work well on yours.

On my Solar Thermal I just used stainless coach screws and neoprene seals and bolted straight through to rafters.

For your solar thermal the bolts in the link would be fine. Keeps the weight off the roof covering and also seals to the covering well.


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20 x 65mm Thermal and 180ltr unvented
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« Reply #2 on: July 13, 2018, 05:16:27 PM »

You are confident this is not asbestos cement? if in doubt it can easily be tested. If it is asbestos cement the approach described by Ian can still be used but there are safety procedures to follow, which I have used successfully.

Schuco solar hot water - 3300kWh/annum, 16 BP 4175N PV panels - 2.8kWp, log burner and back boiler and 18 Ying Li 235 PV panels - 4.2kWp, 42kW ground mount PV, 9kW Panasonic ASHP, 40kWh Nissan Leaf
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