Home insulation: how to better insulate living rooms?

Insulation has a significant impact on home comfort levels and energy bills. This correlation is particularly striking in sins. You tend to spend a lot of time in these places. With poor insulation, you risk needing more heating and increasing your home’s energy costs.

Why is proper home insulation important?

heating andhome insulation are two complementary aspects of your daily thermal comfort. You really need to heat your house if you have a lot of calorie loss. On the other hand, you can save the heating system, if the building is well insulated. A thermal strainer may even require the purchase of a powerful, expensive and powerful device.

However, it is enough to limit heat loss to reduce your heating needs. You can optimize the efficiency of your equipment and lower your energy bills. According to Ademe, heating consumes 62% of the energy paid by the French every year. So you have the possibility to save money by improving the insulation of your home.

Insulation is also crucial for a home’s energy efficiency at all times. In the winter, it is often used to prevent heat from escaping from your home. On the other hand, it helps to preserve the coolness inside when it is very hot outside. Thus, you spend less energy on air conditioning or ventilation.

In short, good insulation makes it possible to limit your energy consumption in winter and summer. It will also contribute to reducing your greenhouse gas emissions and your impact on the climate. As a result, public authorities have been encouraging renewable energy operations for many years. This incentive translates into various financial assistance at the national and local levels.

What parts of the house should be properly insulated?

You should target the main areas of heat loss as a priority effectively improve the insulation of the house. These points should also be observed in older buildings. Typically, an uninsulated home loses heat through:

  • 20 to 30% of coverage;
  • 20 to 25% through air ducts;
  • 15-25% through walls;
  • 10 to 15% through openings, especially windows;
  • 7 to 10% through the lower floor;
  • 5 to 10% due to thermal bridges.

You need to treat these problem areas together to eliminate heat loss in your home. However, you can proceed in order of priority according to your budget and your availability. The work can also be prioritized according to the savings that can be made. Concretely, it starts with the attic and the roof.

Exterior insulation eliminates most thermal bridges and preserves the home’s livability. In addition, the work is less invasive every day. However, this solution is expensive. Thus, individuals often prefer interior insulation, despite its consequences on the size of living rooms.

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How much does it cost to insulate a house?

the cost of home insulation can be a hindrance if you ignore the aids available. Fortunately, the State has established mechanisms to finance the thermal renovation of houses. External insulation is usually more expensive. It costs between 70 and 200 euros per square meter. By way of comparison, the interior method requires an average of 10 to 60 euros per square meter.

As such, exterior insulation is better than interior techniques. Thus it is decisive in the EPB certificate of a house due to its effectiveness against thermal bridges. In contrast, interior insulation often has flaws at floor level. ITE (thermal insulation from the outside) also makes it possible to repair the facade and the roof of old buildings.

As an indication, this method costs between 70 and 120 euros per square meter of walls. On the other hand, it is necessary to provide 100 and 200 euros for ITE on the roof. This value is largely explained by the importance of work. You need to remove and then apply your cover. For interior insulation, prices vary between:

  • 10 and 30 euros per square meter for walls;
  • 10 and 30 euros for the ceiling;
  • 10 and 60 euros for the attic;
  • 20 and 50 euros for the floor.

In all cases, the estimate will be based on most of the insulation solutions chosen (cladding, panel, coating, etc.). However, you can limit costs thanks to bonuses dedicated to energy conversion.

What bonuses are available?

You now have access to different help to do the thermal renovation of your house. In general, the premiums are conditioned on the energy performance achieved after the intervention. Eligibility may also depend on your income in some public schemes. To finance this type of work, you can request:

  • MaPrimeRenov;
  • MaPrimeRénov’ Serenity (former Habiter Mieux Sérénité of ANAH);
  • The EPTZ (zero rate eco-loan);
  • EEC (energy saving certifications);
  • Local subsidies offered by municipalities, departments, regions, etc.

On the other hand, you must entrust the operation to an RGE-certified craftsman to get most of these financial aids. However, the steps depend on the device in question. Therefore, it is important to create the file and complete the request before validating the quotes.

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