Air Sealing in a Hot-Humid Climate
I’m about to start having my new house built and I’m working with a friend who is very flexible, but not very knowledgeable about building science.
I could use zip system and tape, but for $32 a sheet, this is pretty expensive. I could also use regular osb ($17 sheet) and 1″ of spray foam. I could also maybe use regular osb and external used iso foam sheets, but I’m not sure how these are normally sealed. These seem to be good sealing options, but maybe there are better ones.
I know the spray foam will likely be more expensive than zip, but I wouldn’t mind the extra r value of this or the iso.
What’s the most cost effective sealing for a hot humid zone?
Thanks so much for the wealth of info here!
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