Insulation of interior roof spaces
For perfectly insulating lofts, pure foam insulation is the most appropriate choice. By using this system, the temperature changes causing thermal expansion movements disappear and cracks are no longer formed.
There is evidence that pure foam insulated houses show only a maximum two degree difference in temperature between the lower and upper levels. Unfortunately, older properties commonly use traditional, fiber-based insulation material, which can lead to lots of problems. Just a few of many things we could mention: as time passes, a roof slowly collapses under its own weight - not to mention, if condensation occurs, this will accelerate the process, and from then on, only functionminimumally as regards thermal insulation. Also, you have to consider the problems of mold and fungus.
Only pure foam insulation provides a solution that eliminates thermal bridges in the structure or penetrates into places which would be impossible to reach and seal with other insulation. When closedcell polyurethane foam sprayed directly onto the tiles, a perfect adhesion is formed, locking out vapor with a perfect membrane. There is a 30% improved strengthening of the roof construction resulting from the foam, providing a degree of stiffening to the roof system, while remaining tread-proof. The tread-proof foam completely fills the rafter spaces and all the little cracks and gaps of your old roof.
Hail and wind storms cannot cause any damage to the roof system, as the polyurethane foam insulation is waterproof and forms a large, contiguous,multi-layered defense (like what is applied to the windscreens of vehicles), which fully adheres to the roofing system and disperses and absorbs the energy of the storm.
The density of the closed cell polyurethane foam is 35kg/m3, compressive strength 150KPa
Thermal conductivity coefficient: 0,023W/mK
Fire classification: B2 - SELF-EXTINGUISHING
Warranty of closed cell polyurethane foam sprayed: 10 years