Roof Valley Issue

[Sonic70]

Hi All,

Had a leak from one of the valleys on our bungalow. Took a load of tiles off and couldn't see any water marks or wet apart from the batten which the grp Valley sits on was wet. I think the water is getting in through one of the nail holes here which penetrate the membrane below. It looks to me as if the roofer has cut the Valley tiles either side too short and so the cement under the tiles has no gap behind it for water that gets by to escape. I'm thinking of doing the repair myself, does anyone have any advice guidance on doing this. Do I need to put new grp valleys in? Plus the tiles either side will have to be redone to narrow the channel down the centre of the Valley.

 

[ree]

OP,
Why not post pics of the valley as it now is?
Pics of any other valleys wouldn't go amiss either?
Pics of the internal water damage would also help?

 

[Sonic70]

Ree because I'm not going back up to take pics in the dark lol I would of done pics earlier bit didn't think of posting on here till later. Will post pics in next few days. One of the rafters running down to meet the valley was wet underneath the edge of valley if that makes sense.

 

[Sonic70]

Water damage inside has dried out but it was a damp patch down the wall.

 

[noseall]

Hi All,

Had a leak from one of the valleys on our bungalow. Took a load of tiles off and couldn't see any water marks or wet apart from the batten which the grp Valley sits on was wet. I think the water is getting in through one of the nail holes here which penetrate the membrane below. It looks to me as if the roofer has cut the Valley tiles either side too short and so the cement under the tiles has no gap behind it for water that gets by to escape. I'm thinking of doing the repair myself, does anyone have any advice guidance on doing this. Do I need to put new grp valleys in? Plus the tiles either side will have to be redone to narrow the channel down the centre of the Valley.

Re-fit GRP dry valleys. You won't regret it.