Thoughts on new roof progress - pantiles

[kp00110]

Currently having new roof on house (1930s chalet style) - we have gone for original tiles (Koramic Tempest 44) and dry ridge/verge/valley system with new lead

Wondering if you had any comments on progress so far?

 

[datarebal]

Leads a bit messy, fixed with a few alloy nails ..
Hip irons missing
The flat roof appears to be grp ?
It won't survive the perimeter like that .

 

[kp00110]

Thanks for the notes - what do you mean about perimeter of flat roof? Where it runs onto the tiles? How should it be finished?

 

[kp00110]

This is how GRP roof finishes onto tiles via some lead - is that OK?

 

[datarebal]

What happens when the lead expands ?

 

[freddiemercurystwin]

 

[datarebal]

Correct

 

[kp00110]

Thanks I will discuss with roofer and see what he says. I am guessing the risk is the expansion of the lead forces the GRP to crack? Or hopefully the grp would just debond from lead below to form sliding surface.

Regarding the hip-irons I dont believe these are required for dry verge system - the bottom verge tiles will be the pre-formed ones with the angle already made - and will be double fixed.

 

[kp00110]

I believe the detail below might suit my roof profile ? I will ask and it is probably something that can be more easily retrofitted now

 

[^woody^]

It looks like the lead on the dormers is incorrectly fitted. Any water running down the membrane, should then exit over the flashing. As it is, water will run behind the lead and then where, into the roof?

 

[kp00110]

I had a look at my photos before the lead and tiles went on and had a feel of the membrane on the dormer just now

The catslide roof membrane laps up the side of the dormer and runs under the dormer membrane

So hopefully thats not an issue