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[Gareth]

My 109, recently fitted with a truck-cab and my daily runaround at the moment has got a leaky roof. It’s getting in under the joint for the roof skin to the frame. This is riveted all around and obviously the sealant is past it’s best.

I’ve tried a few doses of Captain Tolley leak finder/sealer, but it has not cured it. Next stage will be to mask it up and apply a smear of Tigerseal around the entire joint of the roof.

Anyone got any other suggestions to fix it?

[TimV]

Carefully examine it, particularly on the corners, mine had a big hole there.

Or, as it's a truck cab roof, take it off, invert it and fill with water. Then slosh around, you'll see where the leak is!

[Formerlyjeremy]

How much condensation do you get?

Hard tops can sweat very well - so well that on a damp day you start off driving - the bumps make the droplets join up - so that when you put the brakes on the drops all run forward and fall off over your legs.

Knowing it happens doesn't make it any more comfortable - but does mean that you don't spend hours looking for leaks.

Do truck cabs suffer from similar problems.  the one I had was lined with thin foam which may have prevented the problem.

[Worf]

I wonder if you upturned the truck cab and used something like Slosh tank sealant it would be effective 
It would add some soundproofing also.

[ChrisJC]

It's not that big a job to separate the two, then apply a new sealant and rivet it back together. Having sufficient rivets and a compressed air rivetter helps.

Chris.

[Gareth]

There’s a lot of rivets, so that’s plan B. I think I’ll try the sealant over the top first.

[Calum]

I've just done both mine with some 'liquid rubber' paint, used on flat roofs etc. I think I just got it from B&Q. You can have the rest of the tin if it is any good - it doesn't last long once opened but I only did it about three or four weeks ago. So far so good, not sure how long it'll last. In hindsight I wish I had split the roof from the gutter when I did the Carawagon, but a bit of a bit job now it's all together... hence this bodge. To be honest the gutter on that wasn't bad but the 88" one I bought out of a farmer's field and it has already been 'sealed' in the past.

[Gareth]

Thanks Calum, but I’ve this afternoon gone over it with a bead of Tigerseal. Looks neat and not visible from ground level. Tomorrow’s weather should verify if it worked or not!