Why choose Avenir Renovations?
Why insulate your walls from the inside?
Insulating walls from the inside, also known as ITI, involves placing thermal insulation on the inner side of the walls facing the outside. This technique reduces energy losses and improves the comfort of occupants throughout the year.
Significantly reduce heat loss
Insulating walls from the inside can limit up to 25% of the thermal losses in a home. By reducing heat transfer between the outside and the inside, it maintains a pleasant and uniform temperature while decreasing energy consumption.
Improve thermal and acoustic comfort
This technique not only enhances energy performance but also improves sound insulation. It reduces outside noise and creates a barrier against climate variations, ensuring optimal well-being in all rooms of the house.
Increase the value of your property
Interior insulation work can increase the property value of the home. By achieving a better energy label, your property becomes more attractive on the market, especially in case of sale or rental in Luxembourg or the Greater Region.
A solution suitable for old buildings
Interior insulation is particularly suitable for old or listed buildings, where external insulation is technically or aesthetically impossible. It allows for the preservation of historical facades while significantly improving the energy performance of the structure.
Steps of an interior wall insulation project with Avenir Rénovations Luxembourg
Each insulation project requires careful preparation to ensure the durability and performance of the work. Our teams follow a rigorous process tailored to the specifics of each building.
The different types of interior wall insulation
Depending on the type of building, budget, and desired performance level, several interior insulation techniques are possible. Avenir Rénovations Luxembourg helps you choose the solution best suited to your project.
This method involves installing plasterboard on a metal structure containing the insulation. It is ideal for irregular walls or major renovations, as it allows for discreet passage of cables and technical ducts.
Adhesive insulation is a quick and economical technique, primarily used in new constructions or well-aligned walls. Insulating panels are directly glued to the interior wall, ensuring excellent thermal continuity without thermal bridges.
This traditional solution involves erecting a partition of bricks or blocks in front of the insulated wall. It offers very good mechanical resistance and superior durability, ideal for homes requiring high thermal inertia.
Suitable for complex spaces, spray foam or insulating coating is applied directly to the walls. This method ensures uniform coverage, eliminating thermal bridges, and is perfectly suited for modern interior renovations.
How much does interior wall insulation cost in Luxembourg?
The cost of the work depends on several parameters: surface area to be insulated, type of insulation, technique used, and finishes. Avenir Rénovations offers detailed and transparent quotes for a controlled budget.
| Type of service | Price per m² (EUR) | Average total price (EUR) |
| Insulation glued with polystyrene | 67 to 105 € | 4,275 to 7,600 € |
| Insulation under metal framework | 86 to 133 € | 4,750 to 9,025 € |
| Bio-sourced insulation (hemp, cork) | 114 to 171 € | 6,175 to 11,400 € |
| Sprayed insulation (polyurethane foam) | 95 to 152 € | 5,225 to 9,500 € |
These prices include the supply of materials, labor, interior finishes, and a ten-year warranty. A personalized quote is always recommended to accurately estimate the cost of your project based on the characteristics of your home.
Which insulators to choose for interior wall insulation?
The choice of insulating material depends on several criteria: the desired thermal resistance, the nature of the existing wall, the available space, and the budget. Avenir Rénovations Luxembourg offers a complete range of high-performance and durable insulators.
Mineral wool (glass wool, rock wool)
Widely used for interior wall insulation, mineral wool offers excellent thermal and acoustic performance. Lightweight, economical, and non-flammable, it is suitable for both new constructions and renovations.
Expanded or extruded polystyrene
Polystyrene panels are easy to install and provide effective thermal insulation. Their low thickness allows for maximum living space, making them a preferred choice in urban housing.
Bio-based insulators: hemp, cork, wood wool
These natural insulators are appealing due to their ecological performance and hygrometric comfort. In addition to being sustainable, they regulate indoor humidity and contribute to the quality of the ambient air while providing excellent thermal insulation.
Polyurethane
Known for its high thermal performance, polyurethane is a rigid insulator that limits thermal bridges. Its very low thermal conductivity allows for achieving a high level of energy efficiency with reduced thickness.
The advantages of interior wall insulation in Luxembourg
Interior insulation offers numerous technical and financial benefits. It helps improve quality of life, reduce energy bills, and sustainably enhance real estate value.
A profitable long-term investment
Although it requires an initial budget, interior wall insulation allows for significant energy savings. Costs are quickly recouped through reduced heating expenses, especially in winter in Luxembourg.
Quick and low-intrusion work
Compared to external insulation, implementing interior insulation is simpler and does not require intervention on the facade. Work can be done room by room, without altering the building's exterior appearance.
A comprehensive improvement in comfort
Interior insulation limits cold wall sensations and drafts. It stabilizes ambient temperature, offers better acoustic comfort, and ensures a healthy and pleasant living environment, both in summer and winter.
A solution compatible with energy grants
In Luxembourg, certain subsidies or tax incentives can support energy renovation work. Avenir Rénovations assists you in preparing the files to benefit from these aids according to eligibility criteria.
Regulations on interior wall insulation in Luxembourg
Before undertaking interior insulation work, it is essential to know the legal and technical requirements in force in Luxembourg. Avenir Rénovations helps you comply with energy and administrative standards to ensure your project's compliance.
Thermal standards and performance requirements
Buildings in Luxembourg must meet the requirements defined by the Grand-Ducal regulation on the energy performance of buildings (PEB). For walls, a maximum U-value is imposed to ensure sufficient insulation and limit thermal losses.
Work permits and administrative procedures
In most cases, interior insulation work does not require a specific permit, as it does not alter the building's exterior appearance. However, a permit may be required in certain special cases, particularly for classified or protected buildings.
Consideration of thermal bridges and ventilation
Interior insulation alters the management of water vapor and humidity. Special attention must be paid to the ventilation of the housing to avoid condensation. Our technicians ensure the implementation of a compliant vapor barrier to prevent any risk of mold.
Available aids and subsidies
The Luxembourg government offers various financial aids to encourage energy renovation. These supports, such as the "Klimabonus" grants, can cover part of the insulation costs if the work meets established performance criteria. Avenir Rénovations guides you through these procedures.
Why entrust your wall insulation to Avenir Rénovations Luxembourg?
Calling on a certified professional is essential to ensure the quality and durability of your interior insulation. Avenir Rénovations Luxembourg is committed to providing comprehensive, secure, and personalized services.
A complete support from A to Z
Our teams handle all stages of the project, from the thermal study to the final installation of the finishes. You benefit from a single point of contact who ensures the coordination of the work and technical follow-up until the project is completed.
Qualified and experienced craftsmen
Each site is entrusted to technicians specialized in interior thermal insulation. Their expertise guarantees precise implementation, in accordance with the energy performance standards in force in Luxembourg.
High-performance and durable materials
We select only certified and environmentally friendly insulators. Whether it is mineral wool, polystyrene, or bio-based materials, each product is chosen for its thermal, acoustic qualities, and durability.
Guaranteed and transparent services
All our work comes with a ten-year guarantee and a clear and detailed quote. Avenir Rénovations Luxembourg ensures total transparency regarding prices, materials used, and completion times, for a hassle-free experience.
A recognized expertise in energy renovation
A reference player in renovation and insulation in Luxembourg, Avenir Rénovations puts its expertise at your service to reduce your energy consumption, improve your comfort, and sustainably enhance your property value.
FAQ on interior wall insulation in Luxembourg
Is a permit required to insulate walls from the inside?
In most cases, no permit is required to insulate your walls from the inside, as the exterior appearance of the building is not altered. However, classified buildings or those located in protected areas may require municipal authorization.
What thickness of insulation should be planned?
The thickness depends on the type of insulation chosen and the desired performance. On average, a layer of 10 to 15 cm is recommended to achieve optimal insulation while maintaining a good balance between comfort and available interior space.
Can a damp wall be insulated from the inside?
It is strongly advised against insulating a wall showing signs of dampness without prior treatment. Moisture may accumulate behind the insulation, leading to mold. Our technicians conduct a diagnosis to address the causes before any installation.
Does interior insulation reduce the living space?
Yes, slightly. The installation of insulation and a facing can reduce the surface by a few centimeters per wall. However, the energy savings achieved largely compensate for this minimal loss of space in most homes.
What is the lifespan of interior insulation?
Well-installed insulation can last over 30 years without significant loss of performance. Longevity depends on the choice of material, the quality of installation, and adherence to the building's humidity and ventilation conditions.
Is it possible to combine interior and exterior insulation?
Yes, but it must be carefully planned. The combination of both systems should avoid thermal bridges and internal condensation. Avenir Rénovations Luxembourg can design a mixed project according to your specific needs and the configuration of the property.
Avenir Rénovations Luxembourg, your partner for efficient and sustainable insulation
Insulating walls from the inside is an effective solution to improve thermal comfort and reduce energy bills without altering the building's exterior appearance. With its technical expertise, Avenir Rénovations Luxembourg guarantees careful work that complies with standards and meets your needs.
Whether you live in Luxembourg City, Esch-sur-Alzette, Differdange, Ettelbruck, or Dudelange, our teams respond quickly across the entire territory.
We support you at every stage, from diagnosis to finishing, for a successful, sustainable, and aesthetic energy renovation.
Contact Avenir Rénovations Luxembourg today to get a free and personalized quote for insulating your walls from the inside, and enjoy optimal comfort all year round in an energy-efficient and environmentally friendly home.
