Need some help with wall envelope design for 110 year old masonry building
I am working on a project which is rehabbing a circa 1890 masonry factory building into apartment units. The existing building is 3 to 4-wyth thick brick masonry walls and that’s how it’s been since 1894. We are looking at three options:
1 2×4 wood studs held 3/4 inches off the masonry wall, drywall and batt infill. Our least favorite option bc/of obvious issues with gaps in insulation and convective loop currents and more. It is a developer driven project however, and we have been asked to look at this.
2 2×4 studs held 3/4 inches off, 2 inches of spray foam (closed cell) and then batt infill, and drywall
3 2×4 studs held 3/4 inches off, infill cavity depth with spray foam (closed cell), and drywall
Has anyone had experience with a similar type of building project or knowledge and could you offer any insight and guidance on the above.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part