| Popis: |
Spray-polyurethane foams (SPFs) are thermally efficient and can be sprayed to any thickness to provide the desired thermal resistance. Hence, SPFs have proven themselves as insulation for roofs, walls, ducts and pipes in district heating. They also make good air barriers and vapour retarders. While SPFs may represent an ideal building material, some caveats regarding thermal drift or aging and moisture performance must nevertheless be observed. Designers can mitigate both causes for concern by, among other things, adjusting the thickness of the layer of SPFs to be applied. |
