Flat roof and flashing issues on a new build

[DeeCeeaitch]

One yEar into our new build and we have staining on the render - due to what I suspect is poor flashing. The flat roof angles towards the wall instead of away - the builder is saying there is nothing wrong with the flashing but the render is always patchy even in dry weather. - Your thoughts would be appreciated as we have reached a deadlock with the builder. 

Edited December 4, 2021 by DeeCeeaitch
SPELLING

[joe90]

That looks like damp to me, render experts will be along shortly.

[Mr Punter]

Poor detailing means water is soaking the render.  Nothing at the top of the render to stop it and there is nowhere for the water from the roof to go.

[nod]

57 minutes ago, joe90 said:

That looks like damp to me, render experts will be along shortly.

Plus 1

[TonyT]

Plus another 1

[Dave Jones]

in the absence of any gutters where are you expecting the water to go ? Waterfall off front of window or dribbling down the render ?

 

First job is to get water away from the structure as you don't want permanently soaked walls/render. 

 

Pointless worrying about any staining/damp until you have that sorted.

Edited December 7, 2021 by Dave Jones

[tonyshouse]

Flat roof needs to slope away from the wall!

[tonyshouse]

I would tip the lead up, undo the fixings, lift off the roof panel, add thin ply sheet on firing pieces to give a 1:40 fall away from the house , then replace panel. Likely have to trim the upstand 

 

 

[Dave Jones]

4 hours ago, tonyshouse said:

I would tip the lead up, undo the fixings, lift off the roof panel, add thin ply sheet on firing pieces to give a 1:40 fall away from the house , then replace panel. Likely have to trim the upstand 

 

 

 

so the rain would dribble down the front of the window.

 

Better option would be to do it properly and fit a gutter and downpipe.

[tonyshouse]

I think that it would drip clear of the sill