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Roof: interior insulation

Roof: interior insulation


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As we know, a non-insulated roof means thousands of euros that go up in smoke. The heat loss from a non-insulated roof is around 30%. It is therefore essential and even profitable to think of insulating your roof. Find more articles on the theme: Quotation insulation work

A short precise insulation

What is insulation? The heat rises first. It acts like air, it sneaks through the holes. It is also conductive: it is "transmitted" more easily through certain materials than with others. Thus, the walls and the tiles let the heat through. To insulate, simply add material to the walls and tiles that does not conduct heat or slow down the loss. Air will be prevented from circulating by filling the leaks, and we will fight against water vapor by using a vapor barrier if the insulation is of animal or vegetable origin: condensation must be avoided at all costs which could deteriorate these materials.

The installation of your roof

Before installing your roof, or when you replace an old roof, you can insulate from the inside. It is by far the fastest, simplest and therefore least expensive technique. On the interior wall of the roof, we will staple insulating rolls before the final installation of the roof. This technique has a definite advantage. The rollers adapt to all types of roofs: multiple geometric shapes or old architecture. The rollers are available in several materials: polyurethane foam, expanded polystyrene or mineral wool. We can also fix plaster, plaster or any other covering of the ceiling below the insulation.

Insulation of lost roof spaces

If your roof is in perfect condition, and you do not need to replace it, another solution is available to you: insulate the lost roof spaces. It is by far the most flexible and cost effective solution, if you do not need to change the roof. You can choose between several options: glass wool, mineral wool, hemp, expanded polystyrene or even polyurethane. In bulk or in rolls, these insulators are available commercially at variable prices, but also for variable performance. Remember to consult professionals who can guide you. Materials with thermal resistance R = 4 or R = 4.5 are reasonable both in terms of their insulation efficiency and their price. Above, you will get a higher quality report, certainly, but not necessarily necessary according to your needs. Similarly below R = 4, do not spend your money, it would be a pure loss. In addition, loose materials will be used in the lost attic and those in rolls for conversion of the attic into habitable rooms. It is also possible to insulate roof spaces from the ground using rollers for lost roof spaces.