Building a passive house in Galway, starts in a couple of weeks. I need advice on roof windows. Have three to put in. Velux and Fakro and coming in at similar price. I cant seem to get a quote for non-openable roof windows for velux or fakro. I was advised these would let out less heat than openable windows. The skylights they have are for flat or low pitched roofs and ours is 40 degree pitch.
Any advice would be appreciated as budget is low and would like to get non-openable ones as they are going in double height (unreachable) spaces.