Hello, I’m looking to help to seal the roof. I’ve been working on this greenhouse for about nine months. My current challenges how to seal poly acrylic panels within the rafters. I was really hoping to avoid placing the poly acrylic on top of the rafters, preferring a recessed approach. However I’m getting the strong impression that it will be nearly impossible to make this entirely waterproof. Also, while it is understood that it is a damp area, I was hoping to prefer a tight sealed approach to prevent heat loss and avoid any dripping.
My current plan was to use 3/4 inch trim wood glued/nailed within the rafter frame, followed by window sealant, followed by panel and then another 3/4 inch trim. Then caulk interior and exterior seams. However this leaves me with a dilemma at the apex and where the rafters meet the walls. I’m also quite concerned with wood contraction with the seasons.
Any help is appreciated!
by T2trott
3 Comments
https://preview.redd.it/fck7973ipppc1.jpeg?width=3024&format=pjpg&auto=webp&s=48916c4c5e4cd21f03e99b50792d3ab1a4b98d58
Not sure if the video went through..
Maybe try and get it all on the outer plane of the roof if it’s a good fit you probably don’t need to caulk either as your primary heat loss will be radiative
I would finish framing the roof first. It’s hard to tell what the plan is from this video. Looks like you have a complicated roof with a cross hip. Do you have plans or are you designing and building in your head?