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?

External noise insulation

Keeping outside noise out: a road, a neighbour, farm machinery. Sound is vibration, so what stops it is weight, and the walls chosen for winter warmth often do this already. The options differ in how much mass they add and where it is placed.

Solutions

• Dense/heavy envelope construction: Thick, heavy walls and roofs made of masonry or earth. Sound from outside loses its energy trying to shake a heavy mass, so little of it gets through. The house