PCurtis Posted September 27 Share Posted September 27 So we have a roof that isn't actually flat, it's faceted in triangles. It's board, fibreglass, then GRP (as far as I know). There are a few spots where the GRP seems to have flaked/been scratched away - could be bird claws, sun exposure - the surface is 5 years old. I don't know what the cause is. We noticed a leak in one area and I'd covered that with a tarpaulin and that seemed to have basically stopped the leak. We're coming into winter and it will get windier and so I was looking to temporarily fix it using something like Tekcryl or something similar, a fibreglass based repair paint sort of thing. Now this is temporary for the winter, when it comes into next year then I would look at getting the roof done properly. I've never used this stuff before and I don't know enough about GRP roofs to say whether this would work - so I'm hoping for some advice. Would this work for 6 months or so? Is there something better? Any help really appreciated! thanks Paul Link to comment Share on other sites More sharing options...
markc Posted September 27 Share Posted September 27 Birds should not be able to damage grp, can you post a pic? Link to comment Share on other sites More sharing options...
PCurtis Posted September 27 Author Share Posted September 27 I took these before popping some tarpaulin up. I've done some reading and perhaps the coating wasn't done properly in the sense maybe it went up with the boards under being damp. I'd read that can cause peeling problems but really this looks like flaking and bird claws scratching away. Could be wrong! thanks Paul Link to comment Share on other sites More sharing options...
Mr Punter Posted September 27 Share Posted September 27 It looks like it is flaking. Leaving it may cause further issues. Can you get it done now? 1 Link to comment Share on other sites More sharing options...
markc Posted September 27 Share Posted September 27 If that’s the boards we can see then it’s not grp, even laid over wet boards grp would be a hard rigid layer that is pretty bomb proof - think of a fibreglass boat or kit car. I reckon you have some sort of fabric with a paint or resinous coating. As above, it really needs sorting or it is likely to peel off. 1 Link to comment Share on other sites More sharing options...
PCurtis Posted September 27 Author Share Posted September 27 I have every intention of sorting it properly but realistically I'm not going to get a chance until after this winter. So for the most part the roof is fine, but there are some parts that need something. So hence the question whether I can apply something like tekcrly or in fact I'm being pushed some gorilla sealing tape which sounds like it would do the job. Like a quick sand down and apply - before the weather gets really bad. Most of these solutions say they work quickly and in the damp. Interesting you say it may not be GRP because from memory I am pretty sure that's what I was sold. I will need to go back to the original documents to see. If not GRP what would you guess it was? Link to comment Share on other sites More sharing options...
markc Posted September 27 Share Posted September 27 @PCurtis for a quick fix you could use a tanking/liquid membrane - Aquaseal or similar, goes on like thick paint and cures to a flexible rubber like layer. You can apply to damp surfaces (cellar walls etc. but much better if it’s dry - heat gun or hair dryer work well). 1 Link to comment Share on other sites More sharing options...
Conor Posted September 27 Share Posted September 27 Looks suspect for sure. For a quick fix, rub it down and pour / roller a couple coats of GRP topcoat resin. Make sure it's dry and not too cold. 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted September 28 Share Posted September 28 It is almost certainly a mismatch between the base resin used with the glass fibre and the top coat. should not be a problem structurally, but then it should not be leaking. The easy way to fix it is to use a polyurethane coating. Something like this. https://www.topseal.co.uk/topseal-pu/ 1 Link to comment Share on other sites More sharing options...
PCurtis Posted September 29 Author Share Posted September 29 On 28/09/2024 at 06:03, SteamyTea said: It is almost certainly a mismatch between the base resin used with the glass fibre and the top coat. should not be a problem structurally, but then it should not be leaking. The easy way to fix it is to use a polyurethane coating. Something like this. https://www.topseal.co.uk/topseal-pu/ This looks good, although that's a proper solution as the stuff can't be bought, need to find a contractor - so perhaps for next year - thanks! Link to comment Share on other sites More sharing options...
PCurtis Posted September 29 Author Share Posted September 29 On 27/09/2024 at 16:42, markc said: @PCurtis for a quick fix you could use a tanking/liquid membrane - Aquaseal or similar, goes on like thick paint and cures to a flexible rubber like layer. You can apply to damp surfaces (cellar walls etc. but much better if it’s dry - heat gun or hair dryer work well). This sounds ideal for right now, should get me out of a fix... thanks! Link to comment Share on other sites More sharing options...
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