My house is hot in the southern United States. Trying to add insulation in the attic space during the summer almost killed me last year. The attic was so unbelievably hot. I have developed a roof leak and was thinking about a metal roof on top of my current roof. I was wondering why a metal roof can’t be installed on braces a few inches above an existing roof to function as a roof and shade. The airflow between the two would have to cool the attic, much better than if the heat radiated through straight to the shingles and plywood. We bought a sunshade for our back patio, and I’ve thought about even something as simple as that over smaller homes could drastically help.
In: Engineering
You can get a similar effect to what you’re looking for by making sure the roof is well ventilated. Where I work, new homes have a minimum amount of venting at the top and bottom of the roof.
[Like so](https://cdn-dlagh.nitrocdn.com/AeZzohDGsaPHNVvkMMRIfcUGplvIuxeG/assets/images/optimized/rev-7355784/absoluteroof.ca/wp-content/uploads/2016/03/roof-air-flow.jpg)
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