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The energy one stop shop — active across Belgium
Brussels-Capital Region

Insulation Brussels

Insulation work in Brussels (1000) and across the whole Brussels Region: loft and roof, walls, floor and façade. A Brussels team, a free technical survey at your home scheduled within 48h and clear guidance on the Renolution $2 you are entitled to — from the grand townhouses of the upper town to the listed façades of the centre, where insulating from the inside preserves the building.

48h to schedule the survey
0 € survey & quote
1 team from survey to works
Reply within 48 working hours

Your free insulation quote

A few details and an adviser gets back to you — under a minute.

Which area to insulate?
Your details

Your data stays confidential. No obligation.

Our local presence

Wendows in Brussels

We insulate homes in Brussels with a team that knows the city — from the Pentagon and the Grand-Place to the districts of the upper town, from the Sablon to Laeken, taking in the grand townhouses with gable roofs and the buildings with flat roofs.

The technical survey is done at your home, with no call-out charge and scheduled within 48 hours ; we measure heat loss, check the condition of the building and cost the right insulation jobs. On a listed façade or in a protected zone, we favour insulating from the inside to preserve the exterior appearance, and the same team then follows the whole project through to the finishing touches.

We know the Brussels building stock
Roof & loft of grand townhousesLofts to insulate by blown-in fill and sloping roof rafters under the pitch: we tackle first the job that weighs most on the heating bill, without touching the façade.
Walls of terraced housesNarrow façades and party walls: wall insulation from the inside when the façade is listed or protected, from the outside when planning rules allow, to gain in performance.
Floors, cellars & flat roofsFloor over a cellar or ventilated void in buildings, low floors and flat roofs of city-centre buildings: we remove the thermal bridges and the sensation of cold floors.

Beyond the Pentagon, we also insulate homes in Ixelles, Saint-Gilles, Etterbeek and Laeken, as well as your loft, your walls and your façade — the same team, the same lead times across the whole Brussels Region.

48h to schedule the free survey
0 € technical survey & quote
1 team from survey to works
Districts served
The PentagonSablonLouise districtLaekenUccleIxellesSaint-GillesSchaerbeek
Photo — insulation project in Brussels
Brussels teambased in the region
Renolution subsidieswe guide your application
Subsidies & support

Your subsidies for insulating in Brussels

Brussels relies on subsidies from the Brussels-Capital Region, grouped under the Renolution subsidies. Here are the levers we help you identify and claim — we show you exactly where to apply and provide every supporting document.

Renolution subsidies

Renolution insulation subsidy

For insulating the roof, walls and floor, the amount is scaled according to three income brackets and calculated per square metre insulated. The subsidy is increased for modest incomes — we calculate your bracket and build the complete file.

6%VAT

Reduced VAT for renovation

For a home over 10 years old, VAT drops from 21% to 6% on the supply and installation of the insulation. Applied directly on your quote.

Guided applicationAudit & support

Audit & file building

Depending on your project, an energy audit may condition or increase the subsidy: we arrange it if necessary, then guide you through the entire Renolution application.

2026 Renolution subsidy benchmarks — amounts are indicative, to be confirmed depending on your situation.

The detail of the amounts, income brackets and conditions is on our insulation price & subsidies page. You introduce the Renolution application yourself with Brussels Environment — we guide you through each step and provide all the documents you need (detailed quote, invoices and installation certificates).

Projects in Brussels

Our insulation projects in the capital

A few recent projects in Brussels and its districts. Every project is handled by the same team, from the technical survey to the finish.

UNIQUE photo — The Sablon project (do not reuse)
The Sablon

Roof insulation, grand townhouse

Roof rafters insulated under the pitch and blown-in loft insulation, with no work whatsoever on the listed façade. The top-floor heating bill dropped sharply from the following winter.

Voir le chantier →
UNIQUE photo — Louise district project (do not reuse)
Louise district

Walls from the inside in a listed zone

Protected façade preserved: wall insulation from the inside with a vapour barrier and plasterboard finish, room layouts respected. Thermal comfort regained without altering the exterior.

Voir le chantier →
UNIQUE photo — Laeken project (do not reuse)
Laeken

Blown-in loft, terraced house

Blown-in cellulose loft insulation, in a single day and with no roof dismantling. Renolution subsidy calculated according to the income bracket, with the application guided by our team.

Voir le chantier →
Frequently asked questions

Insulation in Brussels — your questions

Where do I start to insulate my home in Brussels?

You almost always start with the roof and loft: it’s the most heat-losing and the most cost-effective job. During the free technical survey at your home, we measure heat loss, check the condition of the building and propose a costed order of priority (roof, walls, floor, façade) suited to your budget and the available subsidies.

What subsidies can I get to insulate in Brussels?

As Brussels comes under the Brussels-Capital Region, you benefit from the Renolution subsidies for insulating the roof, walls and floor: the amount is calculated per square metre insulated, scaled according to three income brackets and increased for modest incomes. On top of that is 6% VAT if your home is over ten years old. Note that these are not the Walloon subsidies. We help you identify this support and show you exactly where to apply; all the amounts are detailed on our price & subsidies page.

Is an energy audit compulsory before the works?

Not always: for a simple job like loft insulation, it’s generally not required. However, for a broader renovation or to increase certain Renolution subsidies, an audit may be requested or recommended. We tell you clearly during the survey and arrange it if necessary before building your file.

How long does insulation work take?

It depends on the job: blown-in loft insulation is often done in a single day, while wall insulation from the inside or external façade insulation takes from a few days to two weeks depending on the surface area. The exact lead time is firmly confirmed when you sign the quote, with a single team from start to finish.

Are the technical survey and the quote really free?

Yes, completely: the call-out to your home in Brussels, the heat-loss diagnosis and the costed quote are free and with no obligation. You pay nothing until you have validated your insulation project.

Your project in Brussels

Your insulation in Brussels, free survey within 48h

Tell us your address and your project : a Brussels team calls you back, schedules the free technical survey and arranges your Renolution subsidies.

Technical survey & call-out free in Brussels Renolution subsidies: guided application A single team, from diagnosis to works
Map — Brussels area (50.8467, 4.3525)
Brussels 1000Brussels-Capital Region