But why is it getting so hot internally? You'll have some solar gain but that can be addressed with thermal blinds, fridge/computer/ humans putting out some heat but where is the rest of it coming from?
The side of our house is just one big heat soak. It's in the sun for at least 8 hours a day then the back is for the rest of it. There's literally zero shade across the house from sun up to down.
But why is it getting so hot internally? You'll have some solar gain but that can be addressed with thermal blinds, fridge/computer/ humans putting out some heat but where is the rest of it coming from?