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Surely they're sanding back to the wood in the areas where a bond hasn't been formed so that they can fibreglass to that?
Provide there is a strong bond to the wood and surrounding fibre glass logically it should be aok. The main issue that springs to mind is the aesthetics - if it's blended in properly over a wide enough area it should be OK. If its not then it'll look like it's got patches.
Also if they did a shit job first time are they qualified to do it? Our neighbours fibreglass roof looks really neat. Idk what it's like up close though I guess.
hugo7-
Yep-thats exactly why they are doing it.
And yes- I can't see how they are going to get an acceptable finish on it. It needs to look like the well finished new roof it should be
Given the surrounding fibreglass is covered in paint, I have my doubts on how they can achieve a strong bond between patch and existing Fibreglass. I'd have thought that where the new fibreglass resin patch meets paint will be a weak point. They are flying the gap with a thin layer of fibreglass resin. No sheeting like the rest of the roof
I also have concerns on the general sanding to the paint. there will be areas where they sand into the fibreglass, I'd imagine this will effect water tightness over time
chrismanc
They are sanding right back to the wood underneath in places . Can't see how this could possibly be a proper solution