Leaking roof help please

[vanisveryrusty]

My pop top leaks with the roof down.
The leak seems to be coming through the top of the GRP roof, because the headling under that is wet.
Can that be possible, I thought GRP was waterproof ?
How do i fix it please ?

[dbz864]

Is it a autohomes Kamper?

[vanisveryrusty]

Yes it is an autohomes, but the solid roof sides have at some distant time in the past been changed for fabric sides.

You know the problem then ?

[aec]

The original autohomes kamper roof is an aluminium sheet, not GRP, so if you're sure it's GRP then sounds like the whole roof has been changed. If it's the original kamper roof, then yes, they most certainly are likely to leak

[Ian Hulley]

Does it have a roof light or vent ?

[vanisveryrusty]

It has a rooflight.
i am pretty sure the sides at least are GRP because I can see the fibres at the side.
Whether it has an aluminium top or not I dont know.
Would have thought its all GRP as the sides are.
It was fitted by Holdsworth originally.
Back in 1982, and it has a kind of storage area outside at the front where you can strap things.

[aec]

The original Autohomes Kamper pop-up is a big aluminium sheet on a wooden frame supported by gas struts and folding solid sides - you'd know if you had one!

If it's all GRP and there's no obvious damage, the seal around the roof light would seem the first place to look, or any other fittings on the roof... bars etc which would have meant making holes in the GRP originally to fit?

Water leaks can be a real pain to find as the water can track along the insides of things and appear somewhere totally different from the source of the leak. It's probably going to mean getting behind the lining to investigate properly, but you could try sealing externally around the vent and anywhere where there would be a hole in the GRP?

[Ian Hulley]

If it's all GRP and there's no obvious damage, the seal around the roof light would seem the first place to look, or any other fittings on the roof... bars etc which would have meant making holes in the GRP originally to fit?

Exactly.

Ian