Thermal insulation in Luxembourg: complete guide to prices, techniques and Klimabonus grants 2026
Thermal insulation is the cornerstone of any effective energy renovation in Luxembourg. It reduces heat losses by 40 to 70% depending on the items addressed, delivers lasting improvement to the energy passport, and unlocks the highest Klimabonus grant amounts. In 2026, the Klimabonus reimburses up to €115/m² for façades with ecological insulation or mechanically fixed mineral wool, and combined grants (Klimabonus + Enoprimes + 3% VAT) can cover up to 50% of the total cost of insulation works. This guide gives you all 2026 prices, the recommended techniques by item (loft, walls, floors), and the complete procedure for obtaining your grants in the Grand Duchy.
Why insulate your home in Luxembourg in 2026?
In Luxembourg, more than 60% of properties were built before 1990, often with minimal insulation standards — or none at all for buildings predating 1970. The majority of this housing stock carries an energy passport rating between E and G: what is known as a « thermal sieve ». Thermal insulation acts as a protective envelope around your home: in winter, it retains the heat produced inside; in summer, it blocks external heat. The result: a stable, comfortable indoor temperature year-round, drastically reduced energy bills, and a better-valued property on the market. For more on the impact of energy class on your property’s value, see our guide on improving the energy class in Luxembourg.
| Benefit | Concrete impact in Luxembourg |
|---|---|
| 💰 Bill savings | Reduction of 40% to 70% in heating requirements depending on items addressed and the property’s initial condition |
| 🏡 Property value | +10% to +20% on resale price after comprehensive energy renovation (gain of 2 to 3 CPE classes) |
| 🌡️ Thermal comfort | Even warmth in winter, natural coolness in summer — no air conditioning needed for well-insulated properties |
| 🔇 Acoustic comfort | Notable reduction in external noise thanks to the insulating mass added to façades and roofs |
| 🏛️ State grants | Up to €115/m² via Klimabonus 2026 for façades with ecological insulation or mineral wool in ventilated cladding |
| 📋 Energy passport | Gain of 2 to 3 CPE classes with full insulation (loft + façades), up to class A with heat pump + MVHR + PV |
It is strongly inadvisable to install a heat pump before insulating your property. In a poorly insulated building, the heat pump must run at full power continuously, reducing its coefficient of performance (COP) from 3–4 to less than 2 and causing electricity bills to spiral. Always start with insulation — this is the golden rule of energy renovation, and Luxembourg’s Klima-Agence professionals consistently recommend it. For more on insulation prerequisites before installing a heat pump, see our guide on insulation as a heat pump prerequisite.
Estimate your Klimabonus grants for your insulation project. Our free simulator calculates your grant in 2 minutes.
Simulate my grants →The 3 insulation items to address first
An uninsulated house loses heat through several pathways simultaneously. Here is the typical distribution of heat losses from a Luxembourg property built between 1970 and 1990, and the intervention priorities. For a detailed guide on the optimal order of works, see our page on where to start your energy renovation in Luxembourg.
Roof and loft — 25 to 30% of heat losses
Heat rises naturally. An uninsulated roof or loft is a property’s single largest source of heat loss. It is the first project to launch, the most cost-effective and often the least expensive per m² treated. Cold loft blown-in insulation can be completed in a single day for an entire house and delivers visible savings from the very first heating season. For full details, see our guide on roof and loft insulation in Luxembourg.
External walls — 20 to 25% of heat losses
Façades represent the largest surface area in contact with the outside. Their insulation — preferably external (EWI) — is the measure offering the greatest gain in thermal and acoustic comfort. It also eliminates thermal bridges — cold zones responsible for condensation and mould in under-insulated properties. It is also the most heavily subsidised item under Klimabonus 2026: up to €115/m² for ecological insulation or mechanically fixed mineral wool.
Floors and ground-floor slabs — 7 to 10% of heat losses
Floors adjoining an unheated basement, garage, crawl space or bare ground can account for 7 to 10% of heat losses. Ground-floor slab insulation eliminates the cold-feet feeling in winter and noticeably improves comfort in ground-floor rooms. This is a frequently overlooked item but very affordable, from €40/m² for under-floor installation.
Windows account for 10 to 20% of heat losses depending on their size and age. Their replacement is recommended alongside wall insulation, as a single or old double-glazed window cancels out much of the gain achieved by EWI. Triple glazing is the recommended standard in Luxembourg in 2026 and is subsidised via the Klimabonus per m² of glazed area. Windows have a dedicated page on this site.
Loft and roof insulation in Luxembourg
Roof insulation is consistently the first recommended step in any energy renovation project in Luxembourg. It offers the best gain-to-cost ratio, the shortest works timescales, and Klimabonus grants are proportionally very attractive. For a complete and detailed guide, see our dedicated page on roof and loft insulation in Luxembourg.
The 3 roof insulation techniques
Cold loft (blown-in insulation)
Recommended technique if you are not converting your loft. Loose-fill insulation (cellulose, mineral wool) is blown onto the loft floor using a blowing machine. Fast (1 to 2 days for an entire house), inexpensive and very effective — it is often the best investment in energy renovation.
- Price: €35–80/m² (installation included)
- Recommended thickness: 20–30 cm minimum
- Works duration: 1 to 2 days
- Saving: up to 30% on the heating bill
Convertible loft (rafter insulation)
For habitable loft space, insulation is installed between and under the rafters. A more complex technique but essential for creating bedrooms or an office under the roof. Wood fibre boards are very common in Luxembourg for this application, particularly for their exceptional summer thermal phase shift.
- Price: €80–160/m² (installation included)
- Recommended thickness: 14–20 cm minimum
- Works duration: 1 to 3 weeks
- Saving: up to 25% on the heating bill
Sarking: external roof insulation
Sarking involves fixing rigid insulation boards above the roof structure, under the roof covering, during a full roof overhaul. This method provides continuous insulation without thermal bridges, keeps the internal living space fully intact, and is recommended when a roof covering replacement is needed anyway. It costs more than blown insulation but offers the best thermal performance and allows the use of high-density wood fibre boards (Klimabonus €115/m²).
To benefit from Klimabonus 2026 grants on roof insulation, your installation must reach the minimum thermal resistance R levels defined by the programme (R ≥ 4 m²·K/W for performance level I depending on configuration). Synthetic fossil-origin insulation (polystyrene, polyurethane) has not been subsidised since 2024 unless it contains more than 50% recycled content. Cellulose and wood fibre meet the required performance levels and unlock the maximum Klimabonus rate.
Would you like to insulate your loft or roof? Our certified contractors in Luxembourg offer a free quote.
Free quote →External wall insulation in Luxembourg: EWI or IWI?
Wall insulation is the most visually impactful project and one of the most energy-efficient. In Luxembourg, two techniques exist depending on your property’s configuration and local planning rules. For full details on EWI, see our complete EWI guide for Luxembourg; for IWI, our internal wall insulation guide.
EWI — external wall insulation
Priority recommended technique in Luxembourg. Insulation boards are applied to external façades, then covered with render or ventilated cladding.
- Eliminates all thermal bridges (corners, intermediate floors, lintels)
- Fully preserves internal floor area
- Improves acoustic comfort and renews the external appearance
- Full Klimabonus rate: €115/m² for bio-sourced and mechanically fixed mineral wool
- Price: €130–280/m² installation included
IWI — internal wall insulation
Technique used when EWI is not possible (listed façade, restrictive planning rules, architectural configuration). Insulation boards are installed on the interior side of walls.
- Reduces floor area (6 to 12 cm per wall)
- Does not address all thermal bridges (slabs, cross-walls)
- Requires reinstatement of interior finishes
- Klimabonus reduced by 25% compared to EWI
- Price: €60–100/m² installation included
What insulation thickness for external walls?
To reach the performance levels required by Klimabonus 2026 (level I, R ≥ 3.7 m²·K/W), typically allow 14 to 18 cm of mineral wool or 18 to 22 cm of wood fibre in EWI. For level II (enhanced grant, R ≥ 5 m²·K/W), target 18–20 cm for mineral wool or 22–26 cm for bio-sourced materials. For the full insulation comparison for EWI, see our dedicated guide.
In Luxembourg, EWI generally requires a building permit or works authorisation, as it alters the external appearance of the building. In certain areas (historic town centres, protected zones), strict rules impose specific materials or colours for façades. Your renovation company or an architect will handle these procedures. Always check with your municipal authority before ordering materials or signing a quote.
Floor and ground-floor slab insulation
Floors in contact with an unheated space (basement, cellar, crawl space, garage) account for 7 to 10% of a property’s heat losses. Ground-floor slab insulation is often carried out at the same time as internal renovation works (bathroom refurbishment, new screed, underfloor heating installation), which allows project costs and Klimabonus procedures to be consolidated.
Floor insulation techniques
Two main approaches exist depending on the floor configuration and available access.
From above (embedded in screed): rigid insulation boards (high-density rock wool, expanded cork, or polyisocyanurate) are laid before a finishing screed is poured. This is the standard technique when installing underfloor heating. It delivers excellent thermal performance and is compatible with radiant heating. The dual benefit: insulation + underfloor heating in a single operation. The drawback is the loss of ceiling height (6 to 10 cm of screed + insulation).
From below (soffit of floor): where access to the crawl space or basement is possible, insulation boards are fixed to the underside of the floor from the lower space. A less intrusive technique — it does not require removing existing floor finishes — but more technically demanding and less effective than the above technique.
| Technique | Price (installation included) | Main advantage | Typical thickness |
|---|---|---|---|
| From above (embedded in screed) | €60–90/m² | Maximum performance, compatible with underfloor heating | 6–10 cm |
| From below (soffit) | €40–70/m² | Non-intrusive, retains existing floor finishes | 8–12 cm |
Which insulation materials to choose in Luxembourg in 2026?
The choice of insulation material is decisive at two levels: it affects the thermal performance of your renovation (conductivity, thermal phase shift, moisture management), but also the Klimabonus grant amount you can obtain. Since 2024, the Luxembourg programme has financially rewarded natural and bio-sourced insulation and mechanically fixed mineral wool. Fossil-origin materials are only subsidised if they contain more than 50% recycled content. For a complete technical comparison of all insulation materials with their λ values, thermal phase shift and Klimabonus eligibility, see our thermal insulation comparison guide.
| Insulation material | Conductivity λ (W/m·K) | Main application | Klimabonus 2026 | Key characteristic |
|---|---|---|---|---|
| Cellulose insulation | 0.038–0.042 | Cold loft (blown-in), timber frame walls | €115/m² (EWI) / €86/m² (IWI) | Excellent thermal phase shift (8–12 h), recycled bio-sourced, exceptional carbon footprint |
| Wood fibre | 0.038–0.050 | Rafters, EWI façades, sarking | €115/m² (EWI) / €86/m² (IWI) | Best thermal phase shift (10–14 h), hygroscopic, superior summer comfort |
| Rock wool (mechanically fixed) | 0.033–0.040 | Ventilated cladding EWI, lofts, floors | €115/m² (cladding) / €86/m² (IWI) | Excellent fire resistance (A1), very good mechanical resistance for cladding |
| Glass wool (mechanically fixed) | 0.030–0.040 | Lofts, timber frame IWI | €115/m² if mech. fixed / €60/m² if glued | Good price/performance ratio, very widespread, A1 fire classification |
| Expanded cork | 0.037–0.045 | EWI façades, floors, damp areas | €115/m² (EWI) / €86/m² (IWI) | 100% natural, rot-proof, 10–14 h phase shift, moisture-resistant without treatment |
| EPS with ≥50% recycled content | 0.031–0.038 | EWI façades, floors (under screed) | €75/m² (60 + 15 recycled bonus) | Accessible price — subsidised only if EPD confirms ≥50% recycled |
| Standard EPS / PUR / XPS (fossil, non-recycled) | 0.022–0.038 | Floors (under screed), flat roofs | Not subsidised | Very thin at equal performance — but excluded from Klimabonus since 2024 without ≥50% recycled |
Thermal phase shift measures the time a heat wave takes to travel through the insulation. Wood fibre (10 to 14 hours phase shift) is significantly better than glass wool or polystyrene (2 to 5 hours) for maintaining coolness in summer without air conditioning. In Luxembourg, where summers are becoming structurally hotter, this criterion is growing in importance. For façades and roof slopes, wood fibre is the most recommended insulation in 2026 — all the more so as it benefits from the highest Klimabonus grant rate (€115/m² in EWI).
Thermal insulation prices in Luxembourg in 2026
The prices below are ranges observed on the Luxembourg market in 2026, including supply and installation, with 3% VAT included. They may vary depending on the project area, materials chosen, building accessibility and architectural specifics. For detailed prices by item and material, see our guides on insulation prices in Luxembourg and comprehensive thermal renovation prices.
Prices by type of insulation works (supply + installation)
| Insulation type | Price range 2026 | For a 120 m² house | Estimated Klimabonus |
|---|---|---|---|
| Cold loft (blown cellulose or mineral wool) | €35–80/m² | €4,200–9,600 | Up to 50% of cost with bio-sourced |
| Convertible loft / rafters (wood fibre) | €80–160/m² | €9,600–19,200 | Up to 50% of cost with bio-sourced |
| External EWI façade (bio-sourced or mech. wool) | €170–280/m² | €20,000–45,000 (3 façades) | €115/m² (up to 65% of cost) |
| External EWI façade (glued mineral wool) | €130–210/m² | €15,000–33,000 (3 façades) | €60/m² (35–45% of cost) |
| Internal wall insulation IWI | €60–100/m² | €6,000–12,000 | €86/m² bio-sourced (can exceed IWI cost) |
| Ground-floor slabs / floors | €40–90/m² | €4,800–10,800 | Klimabonus applicable |
Prices collected from certified partner contractors in Luxembourg — 2026. These rates are indicative. Request a quote for an accurate estimate of your project.
Total budget for full insulation by property type
| Property type | Partial insulation (1 item) | Full insulation (loft + façades + floors) |
|---|---|---|
| 80 m² apartment | €4,000–10,000 | €15,000–30,000 (depending on building) |
| 120 m² terraced house | €5,000–15,000 | €35,000–65,000 |
| 150 m² detached house (4 façades) | €8,000–20,000 | €55,000–100,000 |
To finance the residual cost after grants, see our guide on financing energy renovation in Luxembourg: Klimaprêt, 3% VAT and stacking strategies.
Klimabonus and Enoprimes grants for insulation in 2026
Luxembourg has one of the most generous thermal insulation grant schemes in Europe. In 2026, the Klimabonus Wunnen was completely overhauled with flat-rate amounts in €/m², clear and easy to read. For a complete guide to all available grants, see our page on Klimabonus grants and subsidies in Luxembourg.
The 2026 Klimabonus for insulation: amounts by material category
| Insulation item | Standard material (glued) | Eco material or mech. fixed mineral wool | EPS with ≥50% recycled |
|---|---|---|---|
| External façade (EWI) | €60/m² | €115/m² | €75/m² (60 + 15 bonus) |
| Façade — internal wall insulation (IWI) | €45/m² (−25%) | €86.25/m² (−25%) | €56.25/m² (−25%) |
| Roof / loft | Rate applied by area and R achieved | Enhanced rate for bio-sourced (same category structure) | Recycled bonus applicable if ≥50% recycled |
| Ground-floor slabs / floors | Rate applied by area and R achieved | Enhanced rate for bio-sourced | Recycled bonus applicable if ≥50% recycled |
| Window replacement | Flat-rate per m² of glazed area — see triple glazing guide | ||
| Standard EPS / PUR / XPS (fossil, non-recycled) | €0/m² — excluded from Klimabonus since 2024 | ||
Source: Guichet.lu — Klimabonus Wunnen, scheme in force since 01/01/2026.
Grants that can be combined with the Klimabonus
| Grant | Amount for insulation | Conditions |
|---|---|---|
| Klimabonus (State) | Up to €115/m² (eco EWI façade) | Property >10 years, approved contractor, agreement in principle before works |
| Enoprimes (Enovos/Creos) | Variable by area and insulation type | Enovos agreement in principle before works — combinable with Klimabonus |
| Municipal grants | Variable by municipality (up to €3,000) | By location — check with your municipality |
| 3% VAT | 14% saving on the entire invoice | Property >2 years, AED-approved contractor, €50,000 saving cap per property |
| Energy advisory | €1,500 (flat-rate audit) | Klima-Agence certified advisor — mandatory for multi-element projects |
| Klimaprêt (climate loan) | 1.5% interest subsidy — up to €100,000 | Via approved bank — see financing guide |
If you are insulating a single element (for example only your cold loft), you can use the simplified Klimabonus procedure without a mandatory prior energy advisory. On the other hand, if you are combining several elements (loft + façades + heating system), an energy advisory by a Klima-Agence certified advisor is mandatory to access the full grants — and its cost is subsidised up to €1,500.
Residual cost = Total cost incl. VAT − Klimabonus − Enoprimes − Municipal grants − VAT saving (14%)
Example for EWI wood fibre on 80 m² façade at €180/m²:
— Total cost incl. VAT (3%): €14,400
— Klimabonus (€115/m² × 80 m²): €9,200
— Enoprimes (estimate): ~€700
— VAT saving 3% vs 17%: ~€1,750
— Estimated residual cost: ~€2,750 (≈19% of the initial cost)
Calculate your exact grants for your insulation project. Use Renov.lu’s free simulator.
Simulate my grants →How to obtain Klimabonus grants for your insulation: the steps
Obtaining the Klimabonus follows a precise procedure whose order is mandatory. Starting works before obtaining the agreement in principle automatically results in the loss of all grants — without exception. Essential reminder: agreement in principle BEFORE any works begin.
Simulate and define your project
Use our online simulator to get an initial estimate of your grants. Identify the insulation items to address, your energy class targets and the overall project budget. To structure your priorities, see our guide on where to start your energy renovation in Luxembourg.
Carry out an energy advisory (energy audit)
For any multi-element project, a Klima-Agence certified energy advisor must assess your property and draw up a prioritised works plan. The cost of this audit (generally €1,000 to €2,000) is subsidised up to €1,500 by the State. Always choose an advisor listed on the official Klima-Agence register. For a single element, the simplified procedure without a prior audit is available.
Obtain the Klimabonus agreement in principle BEFORE works begin
This is the critical and non-negotiable step. You submit your application on MyGuichet.lu via form DEPA-2026. The agreement in principle validates your eligibility and the anticipated grant amounts. Without this agreement obtained before works begin, no grant will be paid — even if works are carried out perfectly by an approved contractor.
Request Enoprimes and municipal grant agreements in principle
In parallel, submit your agreement in principle application to Enovos (for Enoprimes) and check with your municipality for local grants. These steps must also precede the start of works. Your certified contractor can manage all of these procedures as part of a turnkey service.
Carry out works with an approved contractor in Luxembourg
Your insulation works must be carried out by a contractor approved and registered with the Luxembourg Chamber of Trades. Prioritise contractors holding the « Nohalteg an d’Zukunft + » label (Chamber of Trades in partnership with Klima-Agence), which certifies specific energy renovation training. Keep all paid invoices. For guidance on choosing a certified contractor in Luxembourg, see our dedicated guide.
Submit the liquidation application (grant payment)
Once works are complete, submit the payment application to the one-stop housing aid desk on MyGuichet.lu, with paid invoices and compliance certificates. The payment lead time is generally 4 to 10 weeks after submission of the complete file. Plan a financing arrangement that covers the full cost of works upfront — the Klimabonus is not paid in advance.
The first agreement in principle application must be submitted before 31 December 2030. Works invoices must be dated between 1 January 2026 and 31 December 2030. The final liquidation application must be submitted within 4 years from 31 December of the calendar year of the invoice (i.e. no later than 31 December 2034 for works invoiced in 2030).
5 common mistakes to avoid in an insulation project in Luxembourg
Starting works before obtaining the Klimabonus agreement in principle
This is the most serious and unfortunately the most common mistake. Any invoice issued before the date the agreement in principle is obtained is automatically excluded from grants. Without prior agreement, you lose the entire Klimabonus with no possible recourse. Do not sign any materials purchase order and do not allow works to start until you have received the written agreement validated by the system.
Installing a heat pump before insulating
A heat pump in an uninsulated property runs at full power continuously. Its COP drops from 3.5 to less than 2, and electricity bills spiral. Insulation must always precede heat pump installation — this is also recommended by Klima-Agence installers to guarantee equipment performance. See our guide on insulation as a heat pump prerequisite.
Forgetting ventilation after insulation
A well-insulated property is much more airtight. Without an appropriate ventilation system (single or dual-flow MVHR), moisture accumulates, causing condensation, mould and degraded indoor air quality. Always plan for a dual-flow MVHR installation at the same time as or immediately after thermal insulation. Airtightness testing (blower door test) allows the performance achieved to be measured objectively after works.
Choosing a non-recycled fossil insulation material thinking it is Klimabonus-eligible
Since 2024, synthetic fossil insulation (standard EPS polystyrene, PUR polyurethane, XPS) is no longer subsidised by the Luxembourg Klimabonus — unless it contains more than 50% recycled content. Always check the product’s EPD (Environmental Product Declaration) before signing your quote. Choosing wood fibre, cellulose or cork guarantees you the best grants and better summer performance.
Not checking planning constraints before EWI
Some Luxembourg municipalities impose strict rules on façade materials and colours (general development plan, protected zones). EWI installed without authorisation can be subject to a formal order to remove it and reinstate at the owner’s expense. Always check with your municipality’s planning department before choosing your technique and materials. Your renovation contractor can carry out these checks for you.
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Frequently asked questions about thermal insulation in Luxembourg
Where should you start when insulating your home in Luxembourg?
Always start with loft or roof insulation: this is the item generating the most significant losses (25 to 30% of heat losses), the fastest to complete and often the least expensive per m². Next comes external wall insulation (20 to 25% of losses), then floors. If you want to go further, replace your windows and install dual-flow MVHR before moving on to the heat pump. Our guide on where to start details this optimal sequence.
How much does full insulation cost in Luxembourg in 2026?
For a 120 m² detached house, full insulation (loft + façades + floors) costs on average between €35,000 and €65,000 for a terraced house, and between €55,000 and €100,000 for a detached four-façade house. Thanks to combined grants (Klimabonus, Enoprimes, 3% VAT, municipal grants), the residual cost can come down to 40 to 50% of the total. For partial renovation (loft only), allow €4,200 to €9,600 for 120 m².
Which insulation is most heavily subsidised by Klimabonus 2026?
Ecological bio-sourced insulation (wood fibre, cellulose, expanded cork, hemp, sheep’s wool) and mechanically fixed mineral wool (rock wool or glass wool in ventilated cladding) benefit from the highest grant rates: up to €115/m² for EWI façade insulation. Materials containing more than 50% recycled content also receive a bonus of €15/m² (i.e. €75/m² for recycled EPS). Fossil synthetic insulation without recycled content has been excluded since 2024 (€0/m²). For a full comparison, see our thermal insulation comparison guide.
Is an energy audit required to insulate your home in Luxembourg?
If you are insulating a single element (only your cold loft, for example), you can use the simplified Klimabonus procedure without a mandatory audit. For any multi-element project (several insulation items, or insulation + heating + ventilation), however, an energy advisory by a Klima-Agence certified advisor is mandatory to benefit from the full grants. The audit cost is reimbursed up to €1,500 — often making the audit free or near-free.
What energy passport improvement can be expected from insulation?
Full insulation (loft + façades + floors) typically delivers a gain of 2 to 3 energy classes. For example, a class G house can reach E or D with full loft and façade insulation. Combining insulation with a heat pump allows class C or B to be reached. Class A additionally requires dual-flow MVHR, triple glazing and generally photovoltaic panels. For support on your CPE trajectory, see our guide on improving the energy class.
Can you insulate a flat in a jointly owned building in Luxembourg?
In Luxembourg, the energy performance certificate (CPE) is defined at the level of the entire building. To improve the energy class of a flat and benefit fully from the Klimabonus, insulation works on façades, roofs and communal areas must be undertaken at the level of the entire building. It is possible to insulate a flat internally (IWI) on an individual basis, but the impact on the CPE remains limited without collective action on the building envelope.
How long do insulation works take?
Duration varies by type of insulation: 1 to 2 days for cold loft blown-in insulation, 1 to 3 weeks for rafter insulation (convertible loft), 3 to 8 weeks for EWI on a detached house. Administrative lead times (Klimabonus agreement in principle, building permit) can add 4 to 8 weeks before works begin. Taking all procedures into account, allow an overall lead time of 3 to 6 months between the renovation decision and the end of works for an EWI project.
Is the Klimabonus paid before or after works?
The Klimabonus is paid after works are completed, on presentation of paid invoices. You must first obtain an agreement in principle (before works begin), then carry out the works, then submit the liquidation application to the one-stop desk. The payment lead time is generally 4 to 10 weeks after submission of the complete file. Plan a financing arrangement covering the full works cost upfront — the Klimabonus is not paid in advance. For financing the residual cost, see our guide on the climate loan and 3% VAT in Luxembourg.
Take action — simulate and compare your insulation quotes
Use our simulator to find out exactly your Klimabonus grants, then request and compare up to 3 quotes from certified contractors in Luxembourg free of charge.
Related guides — Insulation in Luxembourg