What do you think of this window section? Worth worrying about? 😬

[fatgus]

This is a cross section of our top (for several reasons) window contender… would you be worried that the highlighted bit doesn’t have a designed-in slope? It’s been suggested, by another supplier, that the flat rebate means that rain that gets past the seal (arrowed) would potentially sit on that flat area without draining, causing rot in the long term… that makes sense, but is it a real cause for concern?

 

I’ve compared with a few other manufacturers’ cross sections and most seem to be like this, with just a couple that have a slight fall on the rebate below the glazing unit….

 

Any thoughts gratefully received… I thought our window choice was almost made (just awaiting one more quote) but this question makes me nervous!

 

I shall now return to my much needed evening gin. Thank you all 

 

 

[Iceverge]

Those frames don't look hectic. 

 

What's the Uf value? 

[fatgus]

31 minutes ago, Iceverge said:

Those frames don't look hectic. 

 

What's the Uf value? 

Not sure, but the average Uw over 95sq.m is 0.88. …