Leak in box-profile shed roof

Banbh

I did a lovely job, or so I thought, but have now noticed that some of the timber roof beams are damp. I had rubber washers on all the hex-bolts and covered them with plastic caps.
Does anyone know the best repair job? I was thinking of taking out the bolts one by one and squirting each hole with silicone and then replacing the bolt.

massey265

Are you sure it is a leak it could be condinsation on the inside off the tin and running onto the timbers, as this cold weater would cause it to happen.

Banbh

That's possible but I don't think so. I'll have another look though.

Odelay

May well be condensation, is the cladding wet to touch all over on a cold night/morning? It will run down and trickle off at the timbers.

Banbh

Thanks guys. I've been out checking and I think you're right about condensation. It's amazing the amount of water it can produce. So next, I better get some ventilation in. Much obliged.

massey265

No probs, is it used as a work shop, storage or something that needs to be kept dry? if so have you thought off spray foaming insulating the tin?

Banbh

It's a firewood store and the wood was damp when I put it in, so that explains it.