Calcium carbonate builds up at the bottom of the water tank and reflects the heat back against the glass lining. This reduces the efficiency of the heater and shortens its life.
Two packages for high-performance homes. Vented and unvented roof insulation retrofits and exterior wall insulation details, along with rainscreen wall details for furring strips.
Walls that can drain and dry last a lot longer than walls that stay wet. An air gap between the siding and sheathing lets both dry independently. Furring strips are one way to make that air gap.
Water and air leaks in a building shell are difficult enough to detail on simple buildings. Complex structures can cause headaches for builders, remodelers, and architects who don't pick up their pens and trace at the design stage.
In Cartagena, Colombia, where the Spanish Inquisition burned 800 suspected sorcerers and witches in the town square, roofs were equipped with spiked corners to prevent witches from landing on them.
