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The energy one stop shop — active across Belgium
Province of Liège

Insulation Liège

Insulation work in Liège (4000) and across the whole conurbation : loft and roof, walls, floor and facade. A Liège-based team, a free technical visit scheduled within 48 hours and the Walloon grants prepared and deducted for you — from Outremeuse to the heights of Cointe and Sainte-Walburge.

48h to schedule the visit
0 € technical visit & quote
1 team from diagnosis to the 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 Liège

We work in Liège with an insulation team that knows the city — from the terraced houses of Outremeuse and Le Laveu to the Meuse-valley townhouses of the centre, all the way up to the villas perched on the slopes of Cointe and Sainte-Walburge.

The technical visit takes place at your home, with no call-out charge and scheduled within 48 hours ; we identify heat loss area by area, then the same team follows the whole project, from diagnosis to the finishing touches.

We know the Liège building stock
Roof & loft insulationThe biggest source of heat loss on terraced houses and Meuse-valley townhouses : blown-in lofts or pitched-roof insulation, for an immediate comfort gain.
Cavity walls by injectionOn Liège cavity-wall buildings, we inject insulation into the cavity from the outside — a quick job, with no loss of living space.
Floor insulationGround-bearing slab or floor over a cellar or ventilated crawl space : we insulate from above or below to cut the cold rising up through your feet.

Beyond Liège itself, we also insulate in Outremeuse, Cointe, Sainte-Walburge, Le Laveu and Sclessin, as well as out towards Seraing, Herstal and Verviers — same team, same lead times across the whole province.

48h to schedule the free technical visit
0 € call-out, diagnosis & quote
1 team from diagnosis to the works
Neighbourhoods served
OutremeuseCointeSainte-WalburgeLe LaveuSclessinLe LongdozSaint-LéonardAngleur
Photo — insulation project in Liège
Liège-based teamworking out of the region
Walloon grantsprepared & deducted
Grants & support

Your grants to insulate in Liège

Liège falls under the grants of Wallonia. Here are the levers we prepare and deduct directly from your invoice, with nothing for you to pay upfront.

up to 6 000 €

Prime Habitation insulation grant

For roof, wall and floor insulation, scaled to your income and the performance coefficient achieved. A housing audit is often required to unlock the grant — we point you to an accredited auditor.

6 %VAT

Reduced VAT on renovation

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

Handled for you

Audit & support

We coordinate the housing audit, prepare the grant application and deduct it from your invoice : you pay nothing upfront and you fill in no forms.

2026 grant figures — indicative amounts, to be confirmed based on your file.

The full breakdown of amounts, conditions and income ceilings is on our insulation prices & grants page. We prepare the entire application : you pay nothing upfront and you fill in no forms.

Projects in Liège

Our insulation projects in the Ardent City

A few recent projects in Liège and its neighbourhoods. Every project is handled by the same team, from diagnosis to the finishing touches.

UNIQUE photo — Outremeuse project (do not reuse)
Outremeuse

Terraced house, blown-in loft

Loft insulation with blown-in flakes, laid in a single day. Lighter heating bill from the very next winter on this narrow house in the neighbourhood.

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

Townhouse, cavity walls injected

Insulation injected into the wall cavity from the outside, with no loss of space and no major work indoors. Cold walls eliminated in the living rooms.

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

Hillside villa, facade from the outside

External wall insulation with a finishing render on this villa exposed to the wind on the heights. Even comfort and a fully protected envelope.

Voir le chantier →
Customer reviews

They chose wendows

4.5/5 · 2verified reviews

« Isolation de la toiture et des combles. Différence ressentie dès l'hiver suivant. Petit retard de planning, mais résultat à la hauteur. »
Thomas R.Mons
« Insufflation des murs creux, rapide et sans dégât. La prime régionale a couvert une bonne part. Maison nettement moins froide. »
David K.Huy
Frequently asked questions

Insulation in Liège — your questions

Where should I start to insulate my home in Liège?

We almost always start with the roof or the loft : it is the biggest source of heat loss and the best cost-to-gain ratio. During the free technical visit, we identify heat loss area by area (roof, walls, floor, facade) and propose a costed order of priority, tailored to your home and your budget.

What grants can I get for insulation in Liège?

As Liège falls under Wallonia, you can benefit from the Prime Habitation grant for roof, wall and floor insulation (scaled to your income and the performance coefficient achieved) and from 6 % VAT if your home is more than ten years old. We prepare and deduct these grants ; all the amounts are detailed on our prices & grants page.

Is a housing audit compulsory for the insulation grant?

In Wallonia, a housing audit carried out by an accredited auditor is often required to unlock the Prime Habitation insulation grant and set the order of the works. We coordinate this audit, point you to an accredited auditor and then prepare the grant application on your behalf.

How long does insulation work take in Liège?

It depends on the area : blown-in loft insulation or cavity-wall injection is often done in one to two days, while external facade insulation generally takes a few days depending on the area. The technical visit is scheduled within 48 hours throughout the Liège conurbation and the exact lead time is confirmed as soon as you sign the quote.

Are the technical visit and the quote really free?

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

Your project in Liège

Your insulation in Liège, free visit within 48h

Tell us your address and your project : a Liège-based team calls you back, schedules the free technical visit and prepares your Walloon grants.

Free technical visit & call-out in Liège Walloon grants prepared & deducted A single team, from diagnosis to the works
Map — Liège area (50.6326, 5.5797)
Liège 4000Province of Liège · Wallonia