Energy renovation & insulation
Energy renovation & roof insulation in Luxembourg
More comfort, noticeably lower heating bills and just 3% VAT – your roof insulation delivered from one master craftsman.
3% VAT for energy renovation
- Master craftsman business
- 20+ years of experience
- Everything from one source
- Master craftsman business
- 20+ years of experience
- Free quote
- Everything from one source
Energy renovation & insulation
The service in detail
Your roof is the biggest weak point for heat loss – and at the same time the most effective lever for saving energy for good.
An uninsulated or poorly insulated roof lets a large share of your heating warmth escape. Professional insulation keeps that warmth inside, cuts your heating costs for good and creates a pleasant indoor climate in both summer and winter. As a master craftsman business, we plan and deliver your energy renovation entirely from a single source.
Renovation is especially attractive in Luxembourg thanks to the reduced VAT rate of just 3% on energy renovation work. Combined with state subsidies, investing in a warm, efficient roof becomes considerably more affordable – and we explain the options to you clearly and honestly.
Whether in Mertert, Wasserbillig, Grevenmacher, Echternach or Luxembourg City: we advise you on the right insulation method, use only high-quality materials from trusted brands such as BAUDER and CREATON, and ideally coordinate the work with any re-roofing that is already due.
Variants & materials
Above-rafter insulation (sarking)
With above-rafter insulation, the insulating layer is laid as a continuous blanket on top of the rafters – the best-performing thermal solution, completely free of thermal bridges. It is the natural choice when your roof is being re-covered anyway, because insulation and roof covering are carried out in a single operation. Your living space under the roof is fully preserved and the rafters stay visible.
- Best thermal values with no thermal bridges
- Ideal in combination with re-roofing
- Full preservation of attic living space
- Exposed rafters for an open, airy feel
- High-quality systems from BAUDER and CREATON
Between-rafter insulation
With between-rafter insulation, the insulating material is fitted from the inside between the existing rafters. This is the most economical option and can often be carried out without opening up the roof covering – ideal when the roof itself is still in good condition. Combined with a properly installed vapour barrier, it delivers a building-physics-safe and comfortable result.
- Economical insulation solution from inside
- Usually possible without touching the covering
- Quick to install with little disruption
- Professional vapour barrier against moisture
- Well suited to an intact roof covering
Materials & partners
Why Blang & Lauterbach
Your advantages
Just 3% VAT
In Luxembourg, energy renovations benefit from the reduced VAT rate of just 3% – noticeably easing your overall budget.
Lower heating bills
A well-insulated roof significantly reduces heat loss and makes itself felt on your energy bill year after year.
Greater comfort
Pleasantly warm in winter, pleasantly cool in summer – good insulation creates a balanced indoor climate under the roof.
Make the most of subsidies
We show you which public subsidies may apply to your insulation and help you choose the right solution.
Everything from one hand
From advice and material selection through to clean workmanship, one reliable master craftsman business is at your side.
Brand-name materials
We rely on proven insulation systems from BAUDER and CREATON – durable, safe and matched to your roof.
How your project unfolds
Transparent, plannable and step by step – from the first consultation to handover.
- 01
Consultation
We listen, inspect your roof and advise you honestly on the best solution.
- 02
Measuring
Precise on-site measuring as the basis for planning, materials and costs.
- 03
Quote
You receive a clear, free quote – transparent and with no hidden items.
- 04
Execution
Clean, on-schedule delivery by our qualified roofing team.
- 05
Handover
Joint final inspection and handover – so everything lives up to our promise.
A look at our work
Frequently asked questions
The cost depends on the roof area, the chosen insulation method and the material build-up. Thanks to the reduced 3% VAT rate on energy renovation and possible subsidies, the investment is often more affordable than expected. We prepare a precise, free quote after an on-site measurement.
For energy renovation work, Luxembourg applies a reduced VAT rate of 3% instead of the standard rate. This covers many insulation measures on existing buildings. We check with you whether your project meets the requirements and factor the advantage straight into your quote.
If a re-roofing is due anyway, above-rafter insulation (sarking) is thermally the best choice. If the roof covering is still intact, between-rafter insulation from the inside is usually more economical. We recommend the right solution after an honest assessment of your roof.
Yes. If the roof is being re-covered anyway, above-rafter insulation can be laid in the same operation – saving both time and money. You get a fully renewed, energy-efficient roof in a single project.
We carry out the insulation and roof covering ourselves. For carpentry, roof trusses and timber construction we work with our sister company Blang Holzbau – so everything comes from one hand and fits together perfectly.
Yes, we are there for you across all of Luxembourg – from Mertert, Wasserbillig and Grevenmacher to Echternach and Remich, through to Junglinster and Luxembourg City. Advice and the quote are provided with no obligation.
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Ready for a warm, efficient roof?
Request your free quote now – we'll advise you personally on insulation, subsidies and the 3% VAT advantage.
We speak German, Luxembourgish and English.