Energy sieve: how to successfully renovate?

Energy sieve: how to successfully renovate?

What’s an energy sieve?

An “energy sieve” is a dwelling that consumes a lot of energy due to poor thermal insulation.

Good to know:

According to the French Ministry of Ecological Transition, buildings account for nearly 44% of the energy consumed in France. The building sector is estimated to emit over 123 million tonnes of CO2, accounting for almost 30% of greenhouse gas emissions.

To reduce energy consumption in buildings,
the urgency lies first and foremost in renovation of existing ones. It is also imperative to develop stricter standards for the construction of new buildings. Against this backdrop of the urgent need for energy renovation, the government is still planning to maintain the timetable for banning the rental of “ernegy sieve”. The proposed budget for 2024 would amount to 4 billion euros for renovation.

What should be done first?

The first work to be carried out is thermal insulation. According to a study by ADEME (the French Environment and Energy Management Agency), heat loss in a poorly insulated or uninsulated dwelling is mainly due to :

  • Through the roof: 25% to 30%
  • By the walls: 20% to 25%
  • Air leakage: 20 to 25%.

Thermal insulation is a crucial step in preventing heat loss in your home. It will improve your indoor comfort and significantly reduce your energy bill.

So, for greater comfort and with a view to reducing your energy costs, it may be worth reviewing your heating equipment during renovation, taking into account what already exists. There are several factors to consider, but the wisest thing to do is to replace your heating system with a similar, newer one.

The heating system you choose must not only suit your home, but also meet your needs and requirements in terms of comfort and investment.

Zifort: your perfect ally for interior insulation work

Zifort specializes in the manufacture of accessories for interior insulation, and supports you in your renovation projects with a wide range of products, all made in France.

Choosing the Zifort range of interior insulation accessories means choosing :

  • Sturdy products made of composite materials;
  • 100% French products;
  • Thermal bridge reducers;
  • Products for complete airtightness.

You can find all our products in the Zifort catalog. For further information, please contact our sales team at or via the contact form.

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