The difference is that in a southern climate the heat is outside trying to work its way in.
Hot climate roof insulation.
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.
Then leave an air space between the top of the reflective barrier and the underside of the roof sheathing.
A poorly insulated roof or attic or wall is cooler in winters and hotter in summer.
Insulation for a hot climate.
There are three types of heat transfer.
Thus a good thermal insulation is a must to protect your building and enhance your living comforts.
Reflective roof insulation radiant barriers radiant barriers reflective roof insulation are mostly used in hot climates.
Offering a clear range of air bubble thermal insulation products an extraordinary air bubble sheet which is developed with supervision and quality.
The r value of insulation is a rating of how well it does its job.
Conductive radiant and convective and i written about the difference between them in an earlier post.
They are available as sheets sarking concertina type batts and as bubble multi cell batts and radiant barrier chips.
They use reflective surfaces typically foil coated sheet and heavy foil.
Or you can use a white reflective roof color in place of the foil since your biggest concern is overheating.