Attic insulation prices and quotes

Insulating the attic has a cost, but this type of work is essential to save energy. Indeed, a poorly insulated house loses up to 30% of its heat through the roof! Thus, by insulating your attic, whether converted or lost, you will realize significant savings throughout your life and you will gain in comfort within your home. Let's find out together how to find effective insulation without breaking the bank.

What price should you consider to have your attic insulated?

Attic insulation is possible on converted or lost attics. Work on lost attics is less expensive, with an average of 20 to 60 euros per square meter, supply and labor included. If the price varies according to the insulation used and their method of installation, it is essentially the absence of complex work that justifies the low price. For converted attics, allow 40 to 70 euros per square meter, only for laying insulating materials. The fittings and finishes will be added to your budget. In comparison, exterior insulation costs on average 100 euros per square meter due to the major work to be undertaken on the roof.

Whatever formula you choose, the most determining price for your insulation will be that of the insulation selected. In fact, the price varies from 5 to 90 euros per square meter, depending on the material installed.

• Glass wool, the cheapest formula, costs 5 to 15 euros per square meter.
• Rock wool is charged at 7 to 20 euros per square meter.
• For cellulose wadding, count 20 to 40 euros per square meter.
• The price of sheep's wool is around 25 to 30 euros per square meter.
• Hemp wool costs 25 to 35 euros per square meter.
• For linen, aim for 30 to 35 euros per square meter.
• Wood fiber costs 35 to 40 euros per square meter.
• Polyurethane is sold between 55 and 65 euros per square meter.
• Cork, not widely used, but very insulating, costs 80 to 90 euros per square meter.

Comparative table of the costs of each insulation

What budget should I plan for the installation of attic insulation by a professional?

The price of the installation of your attic insulation by a professional is likely to vary according to several criteria, namely:

• The nature of the attic to be insulated, in other words whether it is a converted or lost attic;
• The installation context and the accessibility of the attic (depending on the difficulties and the slope of the roof);
• The insulation material chosen and the desired mode of insulation (interior or exterior);
• Geographical area and labor costs charged by the professional.

Anyway, plan 30 to 50 euros per hour worked, or even more if accessibility is particularly complex. However, even if the price may seem high, it guarantees you a quality installation.