Regulations for energy rehabilitation of roofs Is there

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A minimum thickness marked on roof insulation to comply with regulations? The Technical Building Code in its basic document “Energy Savings” (CTE-HE) specifies limit values ​​of thermal transmittance according to the winter climatic zone where the building is located: winter climatic zone        Maximum U C thermal transmittance  Alpha Roof insulation solutions and techniques in rehabilitation If you come across the case of repairing an existing pitched roof, the first thing of all is to look at the material of the roof structure . Ideally, it should be made of wood. Wood is not an insulating material but it does have a low thermal conductivity (Lambda = 0.13 W/mK) compared to steel (Lambda = 50 W/mK). This makes it much easier to reduce the thickness of the thermal insulation. The insulation solutions for rehabilitation that you have according to the types of roof are: Sloped roofs.

Depending on the access we have to the roof structure, we can act at different levels. The ideal is to combine insulation in several layers to ensure continuity: Insulation above rafters and slabs . It works on the outside of the building. Although this solution involves raising Telegram Users Number List the roof, the advantage is that the continuity of the insulation is assured. In addition, the inconvenience to users is less than in the rest of the solutions. Between rafters . This solution is very good if we have a wooden roof structure, since the intervention does not lose free height of the interior spaces. The insulating material is protected from the outside and inside. Below the roof slab , inside the building.



When we are faced with a building with a protected or inaccessible roof in the two previous cases, we can also insulate between the roof and the false ceiling. The disadvantage is that the interior free height is reduced. Flat roofs . In both traditional and inverted flat roofs, practically the entire roof must be raised to the floor. We normally insulate on the outside with rigid weather-resistant panels. Tips for repairing or replacing thermally insulated pitched roofs Also rehabilitate the exterior coverage, that is, the roof. It is best to install a ventilated roof solution , which helps dissipate the high temperatures that the tiles reach in the intense sun. Use insulating materials in flexible format, such as mineral wool blankets. With them it is easier to cover any nook in the roof. Fill the entire roof surface with insulating material. It is very important that there are no gaps or interruptions in the material.