Underfloor Heating System Insulation

Stone wool limits the spread of fire. Stone wool is typically classified as a non-combustible material 1&2, which means it has minimal or zero contribution to the spread of fire. Stone wool insulation will not ignite when exposed to flames and can prevent fire from spreading to other materials. By limiting fire spread, stone wool also contributes in assuring the safe escape of buildings’ occupants and first responders’ intervention.

Stone wool does not contain flame retardants. Although there are many types of flame retardants, research has shown that some of the chemicals can have a negative impact on health and environment. Stone wool is naturally fire resistant, which means that flame retardants are not needed, which is why our products do not contain any.

Stone wool’s thermal performance compares well versus other insulation products. Stone wool might have a slightly higher thickness than some other materials in order to reach the same R-value. The most important aspect, however, is that its thermal performance does not decrease over time. The R-value of stone wool insulation will remain stable over the lifetime of the building.

When it comes to underfloor heating systems, stone wool insulation is a solid solution for reducing noise transmission between floors of a building. Measurements have shown that floors with 20 mm stone wool slabs underneath can reduce the perceived impact noise by up to eight times.