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?
One of 2 ways to meet this need. Cost, carbon, footprint and rankings are relative to other solutions for the same need, not absolute.
Wall and ceiling finishes such as clay plaster and bare wood that take up moisture from the air when it is humid and give it back when it is dry. They even out the swings in indoor humidity on their own. Rooms feel more comfortable and are less prone to condensation.
Levels are relative to the other options for this need, not absolute. Fewer dots is lighter.
Hygroscopic natural finishes (clay plaster, exposed wood) (This page) Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Intermediate · Upkeep: Light · Change to daily life: None · Works without the grid: Yes Choose it if you are finishing walls anyway and want them to even out humidity on their own.
Desiccant moisture absorber Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: None · Upkeep: Light · Change to daily life: Occasional · Works without the grid: Yes Choose it if a cupboard or a small room stays damp and you want to draw the moisture out with no power.
Sources
General natural-plaster industry/practitioner durability consensus
Limitations of this page
We don’t list sizing or quantities, as the yield of each technique depends on the quality of its build. The catalogue compares options but doesn’t dimension them. Regulatory notes are indicative, with a French example, and need to be confirmed locally.