That white roof is one of the best things you could’ve done. When we replaced our roof last year, we replaced a traditional red shingle for a silver-white one. The energy use of the house dramatically decreases, even in winter.
For summer, we’ve dropped over $100/mo in A/C costs since the roof replacement. Thermostat never below 76 and usually 77-78. It’s at 78 right this minute and feels quite cool in here. Prior new roof, 72 was the typical thermostat setting.
House is a tract house, circz 1992, brick walls, heat pump, adequate insulation in attic…nothing outrageous. Long axis of house east/west. Front faces almost due north..I think within 3 degrees of true mag north.
I was surprised how the color of the roof changed our power useage…made no other changes to house.