New Roof Valleys No Mortar?

[Philng]

Just had a new roof installed which has 3 dormers so 2 valleys attached. I wasn’t aware but the roof valley sides and roof ridges to the dormers have not been cemented in to the tiles so appear open to the elements. The roofer says this is correct but i am concerned this is going to lead to issues with water ingression.

Anyone able to confirm one way or the other?

 

[Mike13]

I have a recently tiled roof, as in several years ago, it has those little clips holding the ridge tiles down, but exposed ends are cemented in.

Check which tile it is and download the brochures about it from the manufacturers website, they will say how they expect it to be finished off, that looks like a haven for mice and wasps to me.

 

[Philng]

I have a recently tiled roof, as in several years ago, it has those little clips holding the ridge tiles down, but exposed ends are cemented in.

Check which tile it is and download the brochures about it from the manufacturers website, they will say how they expect it to be finished off, that looks like a haven for mice and wasps to me.

So what about the valley sides are they supposed to be cemented in? He is coming back to cement tye Ridge ends. There are 3 dormers so 6 valleys.

 

[Mike13]

well to me they look like perfect homes for wasps and mice, if they dont fill it with cement or something, you will need to look for proper stainless steel wool that is meant for diy car exhaust rebuilding and stuff it in all the exposed ends, dont buy the cheap china "stainless" it will rust away in no time...