R-value (insulation) typical straw bale houses have very thick walls and thus are well insulated. Snow is roughly R-1 per inch. Brick has a very poor insulating ability at a mere R-0.2 per inch; however it does have a relatively good thermal mass. Note that the above examples all use the U.S. (non-SI) definition for R-value. When determining the overall thermal resistance of a building assembly such as a wall or roof, the insulating effect of the surface air film is added to the thermal resistance of the other materials. In practice the above surface values are used for floors, ceilings, and
Development Fund of the Swedish Construction Industry from the Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (Formas) but also from the Swedish Agency for Innovation Systems (Vinnova), the Swedish Transport Administration (Trafikverket) and other research organisations. SBUF contributes to several major research programmes founded on co-operation between companies and technical universities. Development Fund of the Swedish Construction Industry Employers and employees founded the Development Fund of the Swedish Construction Industry (Swedish: Svenska Byggbranschens Utvecklingsfond, SBUF) jointly in 1983. SBUF is the construction industry's organisation for research and development with approximately 5,000 affiliated companies in Sweden. SBUF aims to promote development in the building process