ETICS — Thin render
External thermal insulation with thin-render finish — the highest-performing solution for Luxembourg City facades without any loss of internal floor area.
QUASART · Luxembourg CityThermal insulation
Thermal insulation
in Luxembourg City
ETICS, attic insulation, energy renovation — QUASART insulates buildings in Luxembourg City and its districts. Klimabonus programme, guaranteed R values. Head office in Crauthem, L-3327.
+200Insulation projects
R ≥ 3.7m·K/W guaranteed
Insulation Luxembourg City
QUASART — thermal insulation in Luxembourg City
Luxembourg City combines a wide variety of buildings — Limpertsberg and Belair townhouses, Bonnevoie apartment blocks, Kirchberg office towers, new developments in Gasperich. Each building type calls for a tailored thermal insulation solution. QUASART works across this full spectrum of configurations, from single-family homes to tertiary portfolios.
External ETICS (thin render on insulation board) is the most requested technique for facade renovation in the city: it improves thermal performance without reducing internal floor area. For attics and roof spaces, QUASART installs blown rockwool or wood-fibre boards depending on the roof layout and the target R value. Interior linings with rockwool or wood fibre are reserved for listed facades or party walls.
Several Luxembourg City districts have specific heritage constraints that influence the choice of insulation technique. The Grund, Pfaffenthal and Old Town have been UNESCO-listed since 1994 — ETICS is generally not allowed there to preserve the appearance of historic facades, making interior insulation (ITI) with wood fibre or rockwool lining the preferred solution. For classic Limpertsberg and Belair facades (Art Nouveau, Bauhaus), a prior study determines the compatibility of ETICS with the mouldings to be preserved.
Based in Crauthem (L-3327), 15 minutes from the centre of Luxembourg City, we respond quickly across every district of the capital — Kirchberg, Gasperich, Belair, Limpertsberg, Bonnevoie, Hollerich, Gare, Grund, Clausen and Pfaffenthal.
Our insulation solutions
QUASART insulation solutions in Luxembourg City
Attic insulation
Blown rockwool, wood-fibre boards, cellulose wadding — immediate thermal gain for Belair and Limpertsberg townhouses.
Interior wall insulation
Insulated lining for listed or party-wall facades in Luxembourg City. Rockwool, wood fibre or graphite EPS.
Bio-based ETICS
STEICO wood fibre as external insulation — optimised thermal performance and carbon footprint. Enhanced Klimabonus premium for bio-based materials.
Aides & Réglementations
Klimabonus — Aides à l’isolation
Des aides financières existent au Luxembourg pour les travaux d’isolation. Le programme myenergy (Klimabonus) peut couvrir une partie de votre investissement selon les critères d’éligibilité en vigueur. Consultez myenergy.lu pour connaître votre situation.
myenergy.lu →Zones proches
QUASART also insulates near Luxembourg City
FAQ
Frequently asked questions — Insulation in Luxembourg City
For townhouses in Belair, Limpertsberg or Bonnevoie, external ETICS is often the best solution — it insulates and renovates the facade in a single operation. When the facade is listed or shared with neighbours, interior insulation (ITI) with wood fibre or rockwool lining is the appropriate answer. QUASART carries out a free diagnostic visit to guide you towards the most relevant technique for your building.
Yes. QUASART works across the whole of Luxembourg City — Kirchberg, Gasperich, Belair, Limpertsberg, Gare, Hollerich, Bonnevoie, Grund, Clausen and Pfaffenthal. Our Crauthem head office is 15 minutes from the city centre, allowing a rapid response and efficient site logistics in dense urban areas.
Financial aid is available through the myenergy programme (Klimabonus) for insulation works in Luxembourg. Eligibility conditions depend on your situation — building type, age, thermal target. Bio-based materials receive an enhanced premium. Consult myenergy.lu to check your situation before starting the works.
QUASART sizes every insulation solution to reach at least R ≥ 3.7 m·K/W on walls and R ≥ 6.0 m·K/W on roofs. These values exceed regulatory requirements and optimise Klimabonus support. The choice of insulation material and thickness is adapted to the existing building, site constraints and overall renovation strategy.
The cost of ETICS ranges between 120 and 280 €/m² depending on the insulation (EPS, rockwool, wood fibre), thickness and site constraints (scaffolding in a dense urban setting, limited access, existing balconies or openings). QUASART provides an accurate quote after a free diagnostic visit to your building.
Yes — any modification of the external appearance of a building visible from public space requires a building permit in Luxembourg City. ETICS changes the thickness of the facade and may require a setback from the public right of way. QUASART guides you through the city planning services and documentation needed for your application.