March 14, 20224 yr Author Hi all, Thought I'd ask on this thread rather than starting fresh...... Does anyone know if a warm roof buildup requires a 300mm upstand over a more standard 150mm? On discussing a job with velux, it appears they suggest 300mm for warm roof, which sounds large. Anyone have any knowledge on this?
March 14, 20224 yr Not sure what you mean by a 300mm upstand. I fitted four 3G velux in our warm roof, used the Std flashing kits for a slate roof. Fitted extra insulation around the frames. Been in over a year with no problems. 3G is much quieter than the 2g versions
March 14, 20224 yr Author 53 minutes ago, Beckside said: Not sure what you mean by a 300mm upstand. I fitted four 3G velux in our warm roof, used the Std flashing kits for a slate roof. Fitted extra insulation around the frames. Been in over a year with no problems. 3G is much quieter than the 2g versions Thanks for the response, but this is a flatroof. Still, I'm confused by 300mm for an upstand, but I'd love to hear opinions of others.
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