Lowtech Graph lists low-tech options for every need of a home. Here you can compare them, find tutorials to build them, and link them together into a circular system. Why low-tech?

Bulk water / rain penetration control (envelope watertightness)

Keeping rain out of the walls, which is the single thing that most decides how long a building lasts. Water that gets in and cannot get out again rots timber and ruins insulation. The options differ in whether they keep the rain off in the first place or give what gets past a way to drain and dry.

Solutions

• Rainscreen cladding with drainage gap: Outer boards or panels fixed with a ventilated gap between them and the wall behind. Rain that gets past the boards runs down the gap and dries in the moving ai
• Generous roof overhangs: A roof that reaches well beyond the walls. The overhang keeps most rain, even wind-driven rain, off the walls and windows in the first place. It is the cheapest