mike 202 Posted November 29, 2009 Share Posted November 29, 2009 I want to glue some aluminium brackets to the roof of my motorhome to hold a solar panel in place as I do not want to drill holes. I seem to remember that Sikaflex has been mentioned or should I try silicon sealant?. Can the forum technical experts please advise. Thanks Mike PS - I have tried the search but it is not working. Link to comment Share on other sites More sharing options...
davenewellhome Posted November 29, 2009 Share Posted November 29, 2009 Sikaflex 252 or alternatively Sikaflex 512, either will do the job perfectly well. I'd drill a few holes in the horizontal legs of your aluminium brkst first to give the adhesive a good mechanical lock. D. Link to comment Share on other sites More sharing options...
mike 202 Posted November 29, 2009 Author Share Posted November 29, 2009 Thanks Dave for a quick reply, it is much appreciated especially the advice about drilling the holes. I will look for a supplier if possible in the Portsmouth area. Kind regards Mike Link to comment Share on other sites More sharing options...
Rayjsj Posted November 29, 2009 Share Posted November 29, 2009 I agree with Dave, SikaFlex is best 252 and 512 are almost the same, one cures quicker, can't remember which one though. Silicone isn't an adheshive as such,ok for sealing the water out, but not for sticking things together. Ray PS It is available on E-bay, but look for a long 'sell by' date, as it does have a 'shelf life'. Link to comment Share on other sites More sharing options...
Guest peter Posted November 29, 2009 Share Posted November 29, 2009 Not forgeting of course to remove any polish from the grp and abrade and solvent clean the aluminium first and the stick it on as quick as you can as the ally will start to oxidise rapidly and won't stick as well. Link to comment Share on other sites More sharing options...
rowley Posted November 29, 2009 Share Posted November 29, 2009 I understand that Sikaflex 292 is used by the marine people for bonding. It is more expensive than the others that have been mentioned. I used Sikaflex 291 for my solar panels. Link to comment Share on other sites More sharing options...
Porky Posted November 30, 2009 Share Posted November 30, 2009 For an all purpose adhesive that will stick anything to anything you will not beat Sticks like Sh*t, yep that is exactly what its called, and you can only get it through builders merchants. I get mine from Jewsons. When I first tried it to see how good it was I stuck a piece of 4x2 to a brick wall. The next day I tried to remove it with a hammer without success, then I tried a sledge hammer, the wood split but it still remained stuck to the wall. In the end I had to chisle it off. May not be suitable for your application, but I just thought I would mention it. Link to comment Share on other sites More sharing options...
Lord Raindrop Posted November 30, 2009 Share Posted November 30, 2009 By 'sticking' objects to the roofs of motorhomes, can there be a problem if the object receives a knock. Bolts and screws may pull or break off out but a well stuck shape may tear a chunk out ! Link to comment Share on other sites More sharing options...
davenewellhome Posted December 1, 2009 Share Posted December 1, 2009 A solar panel would typically be around two to three inches high, I'd say there are other items on a motorhome roof more likely to get caught such as aerials, rooflights etc. Surely nobody would drive under anything that's likely to catch the roof and do damage? Thin twig branches shouldn't cause a problem other than scratching paintwork or windows, thicker branches might but why would you drive on if they were that low? D. Link to comment Share on other sites More sharing options...
kontiki Posted December 1, 2009 Share Posted December 1, 2009 'Sticks like Sh*t' is available from Screwfix http://www.screwfix.com/prods/22070/Sealants-Adhesives/Adhesives/Grab-Adhesives/High-Performance/Sticks-Like-Sh-t-290ml but personally I think I would go for the Sikaflex as it seems to be the choice of amateurs & professional motorhome builders. Link to comment Share on other sites More sharing options...
W3526602 Posted December 1, 2009 Share Posted December 1, 2009 Hi, I always understood that you cpuld NAIL accessories to fibreglass bodies. I'd get my coat, but somebody has glued it to .......... :-D 602 Link to comment Share on other sites More sharing options...
Guest peter Posted December 1, 2009 Share Posted December 1, 2009 You have to use Copper nails though as steel will rust and stain the GRP. :D Link to comment Share on other sites More sharing options...
Brambles Posted December 1, 2009 Share Posted December 1, 2009 ;-) Panel Pins might be better as it is for a solar ...... Oh never mind! Link to comment Share on other sites More sharing options...
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