ETICS — Energy renovation
Thin render on rockwool 140-160 mm — transforms the facade of a 1970-1990 house and removes thermal bridges. Refurbishment and insulation in one operation.
QUASART · HesperangeThermal insulation
Thermal insulation
in Hesperange
Comprehensive energy renovation — ETICS, blown attics, floor slab — QUASART insulates 1970-1990 houses and small collective buildings in Hesperange, Howald, Alzingen, Fentange and Itzig. Head office in Crauthem, L-3327.
+200Insulation projects
8 minFrom Crauthem
Insulation Hesperange
QUASART — thermal insulation in Hesperange and Howald
The Hesperange commune — which includes Hesperange, Howald, Alzingen, Fentange and Itzig — has a housing stock dominated by individual and semi-detached houses built between 1970 and 1990. These buildings share a typical thermal profile: walls in concrete blocks with little or no insulation, undersized attics, untreated floor slabs on crawl spaces, original single-glazed joinery. All are major energy-saving opportunities for current owners.
Comprehensive energy renovation is therefore the dominant logic in the commune. QUASART offers a combined approach: ETICS on accessible external facades (thin render on rockwool 140-160 mm), attic insulation by blown Rockwool (R ≥ 6.0 m·K/W at 400 mm), and floor slab insulation with high-density EPS or rigid rockwool from below (R ≥ 3.0 m·K/W). These three combined interventions often halve the energy consumption of a typical house.
Crauthem (L-3327), our head office, is only 8 minutes from Hesperange via the N3 and Route de Thionville. This proximity allows us to closely follow each renovation project, often carried out in several phases spread over time depending on owner budget constraints. Howald also benefits from immediate proximity to Cloche d’Or, which generates growing demand for insulation of extensions and additional floors.
Our insulation solutions
QUASART insulation solutions in Hesperange
Blown attic insulation
Rockwool Jetrock in lost attics — R ≥ 6.0 m·K/W in 1 day. Immediate thermal gain and excellent cost/performance ratio for Hesperange houses.
Floor slab insulation
High-density EPS or rigid rockwool under the floor slab on crawl space — eliminates the sensation of cold floors, frequent in 1970-1990 houses. R ≥ 3.0 m·K/W targeted.
Bio-based ETICS
STEICO wood fibre for owners seeking optimal summer thermal performance and a favourable carbon balance. Enhanced Klimabonus premium.
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 Hesperange
FAQ
Frequently asked questions — Insulation in Hesperange
Hesperange houses of this period have three recurring thermal weaknesses: uninsulated walls (R ≈ 0.5 m·K/W), undersized attics (R ≈ 2 m·K/W) and an untreated floor over crawl space. The QUASART comprehensive energy renovation package combines facade ETICS (aiming for R ≥ 3.7), blown rockwool in attics (aiming for R ≥ 6.0) and high-density EPS floor slab insulation from below (aiming for R ≥ 3.0). Typical result: 50-70% heating savings and clear comfort improvement.
Yes. QUASART works across the entire Hesperange commune — Hesperange centre, Howald, Alzingen, Fentange and Itzig. Our Crauthem head office is 8 minutes away by car. Howald, close to Cloche d’Or, concentrates much of our activity on extensions, additional floors and comprehensive renovations.
In a 1970-1990 house on crawl space, an uninsulated floor slab can represent 10 to 15% of total thermal losses. More importantly, it creates the unpleasant sensation of cold floors, particularly in winter. External insulation (below the slab, from the crawl space) is simple to implement when the crawl space is accessible — high-density EPS or rigid rockwool mechanically fixed. Count 40-80 €/m² depending on insulation and configuration. It is often the intervention with the best cost/comfort-gain ratio.
Yes, and it is often recommended for Hesperange owners with a limited budget. Logical order: attic insulation as priority (quick gain, modest cost: 30-60 €/m²), then floor slab the following year, then facade ETICS when refurbishment becomes necessary. QUASART can plan this ramp-up over 2-3 years and guarantee technical consistency between phases. Each phase may trigger a separate Klimabonus application according to current criteria.
For a typical Hesperange house (140-180 m² habitable, 1970-1990 construction), the overall budget (facade ETICS 120-150 m² plus blown attics plus floor slab) ranges from 30,000 to 55,000 € depending on materials and finishes. Add joinery replacement (15,000-30,000 €) which is often coupled with ETICS. Klimabonus aids are to be deducted according to eligibility — they can represent a significant share of the total cost.
Howald, despite its proximity to Cloche d’Or, remains a predominantly dense residential area, with often narrow plots and houses close to property boundaries. Adding 14 to 24 cm of ETICS thickness must be checked against the distance to the plot limit — a building permit is systematically required. QUASART directs you to the municipal urban planning services and coordinates with your architect if necessary.