Fixed rooflight question

[0ldskoolskater]

Hi All,

Quick question - Our builder was left to spec and order some flat fixed rooflights this is what was fitted. I’ve never seen a design that just sits on top of the upstand, rather than go over it to avoid water ingress (which I believe is the norm)?

This design would appear to rely solely on the mastic deal between frame and upstand - it doesn't inspire confidence to be honest

Has anybody had experience with this design, or even seen it before??

thanks

 

[freddiemercurystwin]

Is there a roof upstand behind the black sides? Difficult to comment without seeing the manufacturers drawings/instructions, of which should have been included with the windows. Got a pic from the inside?

 

[0ldskoolskater]

The grey bit is the upstand which the Sarnafil roofing has been run up the side and over onto the top of the upstand. I think there was a large internal rooflight frame that sits on top of this upstand, which the visible external rooflight component then clips onto.
I don't know the make/model but I'll try to find out, though it was probably provided by GAP UK
I'll get some internal photos and upload.

 

[0ldskoolskater]

Looking at the GAP catalogue I think this might be the product.
There are no internal beads as per the diagram and it hasn't yet been finished

 

[freddiemercurystwin]

It would appear to be this one perhaps: https://wendland.uk.com/wp-content/...t-Skylight_GU_LE_Glove-Box-Guide_6PG_2123.pdf

But you would still expect the flashing to drop down below the upstand, which is why I wondered if there is an additional upstand behind the flashing. You'll need to get him to clarify what he's done.

 

[freddiemercurystwin]

Installation guider here: https://wendland.uk.com/wp-content/...ylight-Installation-Guide_Aug-2022_LR_dps.pdf It looks more like your photo in these diagrams, relying on a silicone seal alone and not requiring the flashing to drop beneath the level of the seal, seems a bit inadequate to me frankly.

 

[catlad]

Looks an odd set up! The similar velux type , the upstand would be approx 1cm smaller all round and the top sits over to waterproof.

 

[0ldskoolskater]

Yes it's very odd for sure. I got up at eye level today to take a closer look an internally and they haven't even managed to seal all the way around as per the fitting instructions. In the photo you can see daylight where you should see sealant.

I'm really not surprised based on experiences on this project to date - think we're headed for an appearance on Rogue Traders at this rate.

 

[catlad]

That does not look good.