Double-Stud Walls in a Hot Climate
I am building in the Philippines and have purchased a half built house. The challenges in that aside I have questions centered around keeping the place cooler.
I come from a hot climate where we build with thick cement block to help keep the heat down from the sun. The blocks are 13 inches thick. I have noticed in the Philippines no such thickness is readily available. They are building with 4 inch block in my area. From experience from another house there we painted the roof white and put some thin 10 mm poly insulation sheeting above the ceiling to help with the heat and it was somewhat successful.
The addition of push out blinds to shade windows and a large overhang between floors will help with shading, and there is a large open space in the center of the floor plan that goes up to the 2nd floor for allowing heat to rise and be vented out. My question is what if a 2nd wall was built next to the first with a space between them that could be vented into and out of the roof space? Would this be efficient enough to justify the additional cost, or would it be better to do it another way? Like most we are not rolling in money, but this is our planned retirement home and we want it to be as cost effective going forward as possible.
I am also looking into solar and wind energy to supplement or stand alone off grid. The power losses are frequent and as we are not on any major road power loss due to typhoons will take much longer than you might think to be returned to our area. Is there a suggested best way to do this?
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