deapsquatter Posted July 19, 2019 Share Posted July 19, 2019 (edited) Hi all, I'm looking at various options for installing my panels on my flat roof (IBR sheets). Plenty of space and about a 15 degree angle north. I know there are lots of brackets on the market that screw directly into the sheets or roof beam. What I'm looking for is a bracket that you have used before on an IBR roof that you can confirm works well and is leak proof . Recommendations? Edited July 19, 2019 by deapsquatter Quote Link to comment Share on other sites More sharing options...
Jaco De Jongh Posted July 19, 2019 Share Posted July 19, 2019 Just now, deapsquatter said: Recommendations? Renusol.. Great German Product. Installed as indicated below: Also get them for your roof type, Mounts through the top part of the profile, with a storm washer as well as a rubber seal. 99% chance it will be underneath a panel and that the IBR will be at an angle. All contributing factors to make it leak free. The complete system will consist of the following spares. ___ 1 Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 20, 2019 Author Share Posted July 20, 2019 Using Jaco's mounts I think this is what I need to do: ibiza and Jaco De Jongh 2 Quote Link to comment Share on other sites More sharing options...
Mark Posted July 20, 2019 Share Posted July 20, 2019 (edited) I think its worth adding a hanger bolt in the centre of the 3200 or moving the side bolts towards the centre. I would add 4 more hanger bolts ... to avoid the rails sagging in the middle. Regards Mark Edited July 20, 2019 by Mark ___ 1 Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 20, 2019 Author Share Posted July 20, 2019 2 minutes ago, Mark said: I think its worth adding a hanger bolt in the centre of the 3200 or moving the side bolts towards the centre. I would add 4 more hanger bolts ... to avoid them sagging in the middle. Regards Mark OK the drawing is not 100% - the end clamps will butt up to the sides of both ends and the panels will all be more centred between the two rails. Maybe 2 more hanger bolts in the middle of each 3200 rail? Quote Link to comment Share on other sites More sharing options...
Mark Posted July 20, 2019 Share Posted July 20, 2019 2 minutes ago, deapsquatter said: OK the drawing is not 100% - the end clamps will butt up to the sides of both ends and the panels will all be more centred between the two rails. Maybe 2 more hanger bolts in the middle of each 3200 rail? You could try and join the ends of each rail in some way... ? Rails come in 6m lengths so could you not use full lengths? Quote Link to comment Share on other sites More sharing options...
Jaco De Jongh Posted July 20, 2019 Share Posted July 20, 2019 2 minutes ago, Mark said: Rails come in 6m lengths so could you not use full lengths? These rails comes in 2.2 , 3,2 and 4,2 meter . It does have rail connectors. Makes a very sturdy joint, after that he must space the hanger bolts equally with the same over hang each side. Mark 1 Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 20, 2019 Author Share Posted July 20, 2019 50 minutes ago, Jaco de Jongh said: These rails comes in 2.2 , 3,2 and 4,2 meter . It does have rail connectors. Makes a very sturdy joint, after that he must space the hanger bolts equally with the same over hang each side. Ah - I missed the rail connectors. That all makes sense. Thanks. Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 20, 2019 Author Share Posted July 20, 2019 (edited) Updated drawing. Edited July 20, 2019 by deapsquatter Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 21, 2019 Author Share Posted July 21, 2019 Is one able to unscrew these Varisole Hanger Bolts to change the angle of the panels a few degrees? Any lift on the top rail would be a win as the roof is only about 15 degrees. Quote Link to comment Share on other sites More sharing options...
Jaco De Jongh Posted July 21, 2019 Share Posted July 21, 2019 1 hour ago, deapsquatter said: Is one able to unscrew these Varisole Hanger Bolts to change the angle of the panels a few degrees? You will loose the sealing capabilities if you unscrew it, The top part is also threaded and allows for a 81mm vertical adjustment. So the max difference will be 81 mm. The Varisole range includes triangles with different angles, and one with adjustable angles, but they are quite expensive. Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 21, 2019 Author Share Posted July 21, 2019 1 hour ago, Jaco de Jongh said: You will loose the sealing capabilities if you unscrew it, The top part is also threaded and allows for a 81mm vertical adjustment. So the max difference will be 81 mm. The Varisole range includes triangles with different angles, and one with adjustable angles, but they are quite expensive. 81mm built in adjustment - perfect. That gives me a few more degrees for what its worth. Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 21, 2019 Author Share Posted July 21, 2019 (edited) Damn - just measured my roof angle. Its only 4 degrees (looks are deceiving). So will need a way to angle up at least another 15 degrees. Edited July 21, 2019 by deapsquatter Quote Link to comment Share on other sites More sharing options...
Jaco De Jongh Posted July 21, 2019 Share Posted July 21, 2019 2 hours ago, deapsquatter said: So will need a way to angle up at least another 15 degrees. This is the available components for angling the panels in the renusol range. You will need distance between the 2 strings to make this work so that the string in front wont cast a shadow on the panels at the back. the bigger the angle the greater the distance between them. Mounting them in landscape will decrease the distance required between the 2 strings. The Cross striving profile is to support the triangles and prevent them from sideways movement. Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 21, 2019 Author Share Posted July 21, 2019 Thanks for the info. Landscape orientation I can do. So do these triangles mount on top of 2 Hanger Bolts and then the rails on top? Quote Link to comment Share on other sites More sharing options...
Jaco De Jongh Posted July 21, 2019 Share Posted July 21, 2019 1 hour ago, deapsquatter said: So do these triangles mount on top of 2 Hanger Bolts and then the rails on top? That is correct. Less hardware required for portrait. Here is some more illustrations and an example of distance needed between strings. Mark 1 Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 21, 2019 Author Share Posted July 21, 2019 (edited) Wow - 2m gap between rows. Thats more than I expected. How much electrical output loss can I expect if I just choose the original option of flat on the roof? With the 81mm adjustment I'm looking at a final angle of 6 degrees. Panels face directly North. I saw reports indicating max losses of 10%? Thats not that much? May be easier (and possibly cheaper) to just add a panel or two. Edited July 21, 2019 by deapsquatter Quote Link to comment Share on other sites More sharing options...
Jaco De Jongh Posted July 21, 2019 Share Posted July 21, 2019 21 minutes ago, deapsquatter said: Wow - 2m gap between rows That is for portrait. Less for landscape. 22 minutes ago, deapsquatter said: May be easier (and possibly cheaper) to just add a panel or two. I agree. Dani 1 Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 23, 2019 Author Share Posted July 23, 2019 (edited) Experimenting before doing the real thing Edited July 23, 2019 by deapsquatter Quote Link to comment Share on other sites More sharing options...
Mark Posted July 23, 2019 Share Posted July 23, 2019 52 minutes ago, deapsquatter said: Experimenting before doing the real thing I predrill a hole before I use the hanger... That thing is massive and you don't want to split the purlin or beam Plus it goes in easier ! deapsquatter and Jaco De Jongh 1 1 Quote Link to comment Share on other sites More sharing options...
Jaco De Jongh Posted July 23, 2019 Share Posted July 23, 2019 14 minutes ago, Mark said: I predrill a hole before I use the hanger... You are correct, it should be pre-drilled. @deapsquatter, i will upload the installation manual to drop box and send you the link. Its something like 25 meg. Quote Link to comment Share on other sites More sharing options...
deapsquatter Posted July 23, 2019 Author Share Posted July 23, 2019 3 hours ago, Jaco de Jongh said: You are correct, it should be pre-drilled. @deapsquatter, i will upload the installation manual to drop box and send you the link. Its something like 25 meg. Thanks! Quote Link to comment Share on other sites More sharing options...
Mark Posted July 24, 2019 Share Posted July 24, 2019 Last night was one of the times I have been very glad to have spent the time and effort to install very solid panel racks (corrugated iron with dowel screws). A howling and gusty wind into the back of my tilted (35deg) array... stuff of sleepless nights! (could hear the wooden joists flexing)... I don't think doing your mounting properly first time is money poorly spent - for the cost its VERY worth it. Quote Link to comment Share on other sites More sharing options...
Jaco De Jongh Posted July 24, 2019 Share Posted July 24, 2019 14 hours ago, deapsquatter said: Thanks! Have send you the link. Here is the pre-drill part. 14 mm through the IBR and 7 mm into wood. deapsquatter 1 Quote Link to comment Share on other sites More sharing options...
Guest Posted July 24, 2019 Share Posted July 24, 2019 (edited) 2 hours ago, Mark said: Last night was one of the times I have been very glad to have spent the time and effort to install very solid panel racks (corrugated iron with dowel screws). A howling and gusty wind into the back of my tilted (35deg) array... stuff of sleepless nights! (could hear the wooden joists flexing)... I don't think doing your mounting properly first time is money poorly spent - for the cost its VERY worth it. O my word ... ain't that the truth. We also had a wee bit of a blow yesterday here in Cape Town. Was pretty tense for this family: Cape Town Woman Films Storm Blowing Away Her Furniture and Roof My panels are flush mounted with the roof pointing right into the storm front. Then we also had a lightning strike with quite a large area left without power and some serious rain pouring down at the EXACT moment the installers closed the roof where the new array wires came into the house. So my newly installed array with the Daimond Deck roof sheets and clips has weathered its first proper storm trial ... passing it THIS time. Edited July 24, 2019 by Guest Quote Link to comment Share on other sites More sharing options...
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