Roof coating vs. insulation? or?
Not sure this is the right forum - I'm surprised there isn't a roofing forum - so let me know if you think I should post elsewhere (this old house? i have no idea....usually i'm over in gardens)
I've got a garage work studio that we upgraded last summer. (I've posted around here before about the skylight - which as of yesterday is covered with a solar "hair net" style cover..)
The building is very very hot - the ceiling is hot to the touch, and seems to be radiating a lot of heat, though the SO blames the cracks around the garage door and says the heat is just heat rising in the room. ?
I've got three layers of shadecloth hung on the 2 car garage door which helps with that surface. My standalone a/c unit isn't able to cool it below 90' today....I work in this space every day so it is driving me nuts.
Some things I'm considering:
- blowing in insulation to the somewhat shallow sloped roof
- roof coatings to reflect heat like coatncool - no hoa so not a problem, but I just read that it's a controversial idea for asphalt shingles.
- obviously sealing up the cracks as best as I can between garage door and wall, below garage door. The room is drywalled and finished otherwise.
Any advice about how to rank the issues I'm facing? I'd love to hear opinions about what the biggest heat gain causes are, and how I should approach a holistic kind of program to make this building more efficient.
thanks much all.