Hot Climate Roof Insulation

Then leave an air space between the top of the reflective barrier and the underside of the roof sheathing.

Hot climate roof insulation.

The difference is that in a southern climate the heat is outside trying to work its way in. They use reflective surfaces typically foil coated sheet and heavy foil. A poorly insulated roof or attic or wall is cooler in winters and hotter in summer. Spray foam insulation is by far the best type of insulation for hot climates as it has considerably higher r values than other insulation types.

Un insulated attic spaces in hot humid climates easily reach 140 and higher so if you have an air conditioning duct with minimal insulation running through the hot attic you can imagine how much of the cooling is lost before it even gets to your rooms. They are available as sheets sarking concertina type batts and as bubble multi cell batts and radiant barrier chips. The r value of insulation is a rating of how well it does its job. Reflective roof insulation radiant barriers radiant barriers reflective roof insulation are mostly used in hot climates.

Thus a good thermal insulation is a must to protect your building and enhance your living comforts. I would fill the roof joist cavities with cellulose insulation and cover the top of the cavities with a foil reflective barrier. Or you can use a white reflective roof color in place of the foil since your biggest concern is overheating. Insulation for a hot climate.

There are three types of heat transfer.