Ordering a quote for thermal insulation work and attic installation requires great vigilance, as it involves huge investments. While many companies offer various types of energy renovation and/or thermal insulation work, each household must always check the quality of the work they propose. How to uncover the fraudsters? Discover in this article our tips to circumvent their tricks.
“Always hire a certified RGE company to avoid scams.”
Tip 1: Stay vigilant regarding the sales system of the craftsman or company
To gain your trust, some companies are willing to do anything; even offering you a quote at a lower cost or heating systems at a low price for your home. Be vigilant, this is a potential scam!
Also, be aware that a prior visit is required for the following types of work:
- Thermal insulation work;
- Energy renovation work;
- Attic installation work.
If necessary, do not engage the services of such a company. This is a pure scam.
For informational purposes, a company must provide a reflection period (minimum 14 days) for its clients to respond. If you are pressured to accept a quote that offers a promotional deal that will soon expire, be careful, this is yet another type of scam!
Tip 2: Read the energy renovation work quote carefully

Insulating walls from the outside involves tough and costly work. That is why several aid systems exist such as maPrimeRénov, CEE bonus, energy bonus, zero-rate eco-loans. Scammers know about these financial aids and try to set up a file to scam or obtain the bonus.
For your information, a quote for energy renovation work varies between 140 and 200 euros including tax. By subscribing to financial aids like maPrimeRénov, the CEE bonus (Energy Savings Certificate), the energy bonus, or the zero-rate eco-loan, you benefit from a reduction rate between 50% and 75%. However, the financing rate varies depending on the company offering the financial aids for energy renovation work. This is why a quote of 1 euro for the thermal insulation work of the walls of your house is essentially a scam. So, do not be tempted by a quote that is too low, or even free. It is impossible even with a file submitted for financial aids.
To identify scams from a malicious company, request at least two quotes to compare. This method allows you to check the conformity of the prices mentioned in the quote against those set by the energy renovation work market. Does your house not deserve the best work?
Tip 3: Conduct an investigation on the company to avoid scams
You have received your quote. Everything appears clear. Before signing, always conduct a small investigation. Inquire about the work they have previously completed by asking for references. Verify the company’s compliance with the GDPR or General Data Protection Regulation.
Tip 4: Give importance to the technical visit to avoid scams
In the field of energy renovation work, a technical visit is imperative. This step allows the company to compile a quote for your project. Moreover, it is the means to determine the work required on walls, roofs, and throughout the house. Thus, the craftsman can present you with the invoices, determine the appropriate materials for the work such as insulation, coating, etc.
Tip 5: Request a complete quote file to avoid scams
Every company must present a complete file regarding the realization of an energy renovation project. This file must contain a RGE certificate or recognized guarantor of the environment of the company and its craftsman. Additionally, the company must communicate its registration number allowing it to be identified with the GDPR, list all the work to be done as well as provide all invoices. Proposals for financial aids must also be presented in the file proving its status as a good faith company.
To simulate household energy renovation quotes, visit reliable sites like that of Effy, etc. To avoid scams, do not forget to ask the craftsman for a file certifying the completion of the wall insulation work and especially an RGE certificate at the beginning of hiring the craftsman.
Tip 6: List the types of work and materials
Installing thermal insulation systems implies a list of work to be done. Walk around your house and list all the types of materials to use as well as the elements to install. In this way, you will be able to determine the appropriate system to provide the most warmth to your home. Thus, you will save the most time and money.