Fitting a Roof Maker Luxlite LP between PV panels set into GSE trays

[zzPaulzz]

My architect helpfully placed the SVP too close to the roof light for my ensuite so it now has to be non-opening.  After a bit of searching I've ended up with the Roof Maker Luxlite LP. If anyone knows of a more economical solution for a 35º pitched roof fixed triple glazed window please let me know!  

 

This roof light has to fit between 2 PV panels mounted in-roof on GSE trays. Am I correct to assume that the roof light unit butts up to the GSE tray and flashing is used to maintain the water proofing? If that detail is correct then for a 1134 mm wide PV panel, assuming 5mm clearance each side, my roof light has to fit into a 1144mm gap.  Deducting the 194mm from each side for the rooflight flashing apron then my window structural opening is restricted to 756mm.  What do you think? Thanks!

 

[JohnMo]

1 hour ago, zzPaulzz said:

GSE trays

Or just go for an already engineered solution.

 

VELUX Solar Integrator ODL

The VELUX Solar Integrator ODL is a flashing solution

designed especially for solar panels. The solution enables

a seamless installation of VELUX roof windows with a

GSE IN-ROOF system. The low-profile flashing design

ensures....

 

Your plan misses out the side flashing which stops water ingress under side of GSE trays, from top or by wind driven from underneath. Any flashing would need to tie everything together to stop leaks.

[zzPaulzz]

Thanks.  Unfortunately I can’t use Velux as they don’t do a fixed pitched window.  My picture shows only the vertical join between the GSE tray and the window flashing apron. What would you add here to address your side-flashing point? I thought I’d covered that?

[Conor]

Use an air admittance valve and ditch the SVP.

[zzPaulzz]

Can’t. It’s the highest point in the system. 

[JohnMo]

2 hours ago, zzPaulzz said:

What would you add here to address your side-flashing point? I thought I’d covered that?

The GSE trays have flashing at the side and top and it's all interconnected to stop water getting where it shouldn't be. While maintaining air movement. Omit the side flashing and your own thing at your risk is what GSE would say.

 

Perhaps put one panel less on the roof to get space to do things correctly? move SVP, then go velux? Dump the roof light?

[zzPaulzz]

Perhaps my diagram isn't clear.  The part marked as 'additional flashing' is intended to be the side flashing, hooked over the Roof Maker flashing apron.  That appears to be similar to the GSE adaptor noted on the Velux ODL kit and pictured below?  I am working on a solution to the SVP so that might go away but I'd like the option to use Roof Maker's Luxlite (fixed or opening).  @JohnMo, in your opinion is it Velux or nothing with the GSE kit then? 

 

[JohnMo]

1 hour ago, zzPaulzz said:

@JohnMo, in your opinion is it Velux or nothing with the GSE kit then?

I wouldn't bother with the faff. And agro if it all doesn't go to plan, and you get a wet ceiling.

 

If doing the roof light and PV, keep the two apart, by making the PV array smaller or roof light smaller. Or find a new home for the SVP and do the engineered solution from GSE/Velux.

[zzPaulzz]

Ok, I appreciate the advice. I won't give up just yet but will bear what you said in mind.  Got a few weeks before I have to get off the fence.