Sustainability is at the forefront of all of Sisaltech's decisions, and they consciously make an effort to be as low-carbon and ethical as possible. They use virgin sisal crops imported from Tanzania, and recycled sheep’s wool from the Harris Tweed industry, as well as a starch-based binder which allows the product to be completely compostable from its offcuts to the end of its life-cycle. Sisal is a moisture buffering material; helping to avoid moisture build-up- and time saving, as its structure provides friction fitting and prevents slumping when installing. In addition, it can be simply handled without any protective clothing, and has no carcinogens. Sisal can be used on both new builds or retrofits alike.