Zinc Guttering - Fixing a leak on a right angle join?

[krav]

Hi there,

Our house has zinc guttering and at one of the corners the gutteriing is not joined properly such that sunlight can be seen through it. A friend offered to repair it and he said that silicone sealant would do it so he went up, cleaned it up a bit, then filled it all with some white bathroom sealant.

About 2 days later the gap has come back, so now I'm wondering what a better solution is. Could it be that the strong sunlight on the roof caused the sealant to contract too much? Or is this not an appropriate method for sealing along a leaking seam?

Suggestions welcome

Thanks for any tips.

David

 

[Mursal]

We have fixed them with clear sealant in the past. Must be moving away from the other pipe and the sealant isn't strong enough to hold the two pieces together.
A new section of pipe would be the next step.

Is their a bolt or anything holding the joint together?

 

[krav]

Hi Mursal,

Thanks for your reply, very kind.

There isn't anything holding the two pieces together and I understand that there is some wood behind ift which is rotting so that may explain the movement.

Presumably I might be able to fix the joint together with something and then try re-sealing it?

Obviously a new piece would be preferred but I'v heard they can be very expensive?

David

 

[Nige F]

bathroom sealant is for ........bathrooms google Dow Corning and select a proper silicone for the job

 

[krav]

OK, I'll have a look into that, thanks

 

[hardmetalking]

We solder the corners of zinc guttering together. This is the approved method of installation. If this wasn't done properly in the first place get the contractor back to rectify.