Any ideas how I can re-seal the lower bodywork seam joint?

[geebee]

I've noticed some water ingress coming in from what I think is a bodywork panel joint. The joint seam is towards the bottom of the caravan and looks like it was sealed with mastic in production although it looks like it's perishing. There is no way to take this apart unless it was done professionally in some caravan centre so I wondering how I could protect and reseal this joint? At the moment I'm going to buy some electrical tape and stick that along the seam all the way down both sides of the van, that should stop any further water getting in but I'm looking for something longer lasting, perhaps a bead of Sikaflex?

Thanks for any advice, Graham.

[Trooper]

I'm not sure how you could seal it, Sikaflex might work or possibly 'Captain Tolleys Creeping Crack Cure'

Trooper

[geebee]

Thanks, the creeping cure fluid would be great but I can't see it running upwards! The rain seems to run down the sidewall and then hugging the panel it goes back up into the gaps within the seem. Surprisingly I put some white insulation tape along the seam and it sticks well and doesn't look too bad, so i'm considering a stripe to go over the seam that matches the existing decals. First I think I'll try a bead of sikaflex but waiting for the weather to improve is frustrating!

[Dickers]

At the risk of being a party-pooper, covering up problem doesn't solve it. Best to find the source of the problem and cure it before it comes back and bites your bottom.

Dickers

[geebee]

Very true Dickers but I really have no idea how I could replace the mastic without pulling the walls apart, not something I want to do! I guess that there has been minimal damage which I'm drying out and now the area is protected until I can work out my best options considering the cost and age of the caravan.

One idea is to lift the side apart somehow but I fear this could cause more issues than resolving them, end of the day I think I'm going for the most straightforward!