Has anyone seen these curbs or have any options on them? I’m unsure of the use of plywood in this orientation but given the corner posts and appropriate attachment to the deck it seems OK. Looks like something that could be site built as well.
https://www.skylightsunlimited.ca/index.php/products/insulated-curbs/insulated-super-curbs
The effect of curb insulation is significant. For one model of skylight I’m looking at, going from deck mounted to curb mounted with the same glazing increases the U-Factor from 0.27 to 0.45 – it looks like it’s modeled with a 2×6 uninsulated curb as the contributing factor.
Edit: Here are the 2 cross sections comparing curb vs deck mounted:
Deck mounted (Artistic PVCSR) Triple Pane U-Factor 0.27
Curb Mounted (Artistic PVCCM) Triple Pane U-Factor 0.45
