2026 prices, VAT included
Between €25 and €200 per m², VAT included, depending on the technique. Blowing insulation into a cavity wall costs €25–45/m², capoto (ETICS) €70–130/m² and an insulated lining wall €80–200/m². These are figures from projects we finished in 2025 and 2026, not a market price list.
By David Francisco, civil engineer at EnergyEase · Updated 25 September 2026
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Summary
Prices per m² incl. VAT, with materials and labour included, from projects finished in 2025 and 2026 in the Lisbon and Setúbal region.
| Where | Technique | Price per m², incl. VAT |
|---|---|---|
| Cavity walls | Blown-in insulation in the cavity | €25–45/m² |
| Façade, from outside | Capoto (ETICS) | €70–130/m² |
| Walls, from inside | Insulated lining wall | €80–200/m² |
| Attic | Attic floor insulation | €25–45/m² |
| Ceilings | Blown in above the existing false ceiling | €35–70/m² |
| Ceilings | New false ceiling with insulation | €70–160/m² |
On small areas the price per m² goes up, because travel and preparation hardly depend on the area. The final price is always the one in the written quote, after the visit.
By technique
The right technique depends on the wall, the façade and what you want to change in your home. Here is the price of each one, with a real example and what the price includes.
Cavity walls
Best value
€25–45/m²
Median of €38/m² across 67 projects
Real exampleHouse in Cascais, 105 m² of wall: €3,896
Included in the price
It only works if the wall has a cavity. The façade stays as it is.
Wall insulation →External thermal insulation
The most complete
€70–130/m²
On a large façade the price per m² drops: €76 on 225 m²
Real exampleFaçade in Oeiras, 225 m²: €17,172
Included in the price
It also insulates pillars, beams and slab edges. In an apartment building it needs the condominium's approval.
Capoto: price per m² and timings → Capoto or blown-in: how to decide →Internal thermal insulation
Façade untouched
€80–200/m²
From 40 m² of wall, starting at €80–90/m²
Real exampleOne wall of 24 m²: about €2,300 to €2,600
Included in the price
Painting not included. You lose some space, from about 5 cm per wall, but you can go room by room.
Lining walls and ceilings →Attic
Often the cheapest
€25–45/m²
Mineral wool rolls €25–35/m², blown-in wool €30–45/m². Median of €31/m² across 37 projects
Real example80 m² attic with mineral wool rolls: €2,000 to €2,800
Included in the price
For attics not used as living space, with access to the floor.
Attic insulation →Ceilings
No need to break the ceiling
€35–70/m²
Blown in above the false ceiling you already have
Real example93 m² in Lisbon: €2,465
Included in the price
No false ceiling? A new false ceiling with insulation costs €70–160/m²; a 25 m² room comes to about €2,400.
False ceiling with insulation →Not sure which one you need?
We tell you at the visit, free of charge
We check whether the walls have a cavity, take measurements and quote only what makes sense in your home.
Get my free quoteAll prices incl. VAT. Examples from projects finished in 2025 and 2026; for privacy, we only give the municipality.
The same house, two quotes
For a house in Cascais we quoted both options, both ready to paint. The walls had a cavity and the owner chose blown-in.
Capoto insulates more, because it also covers pillars, beams and slab edges, and it renews the façade. Blown-in came to just over a third of the price and is done in days, not weeks. There is no single right answer for everyone: it depends on the façade and the budget.
Capoto (ETICS)
€15,158
Whole façade, with scaffolding
Blown-in insulation
€5,724
Cavity of the same walls
Real quotes, VAT included. Municipality of Cascais.
Finished projects
Totals of accepted quotes, VAT included. Note how the price per m² changes with the technique and the area: capoto on 35 m² came to €106/m², on 225 m² to €76.
Want to see the projects?See photos of our projects in our portfolio.
| Technique | Municipality | Area | Total |
|---|---|---|---|
| Blown-in, walls | Cascais | 105 m² | €3,896 |
| Blown-in, walls | Sintra | 86 m² | €3,063 |
| Attic floor | Cascais | 90 m² | €2,878 |
| Attic floor | Amadora | 110 m² | €3,382 |
| Insulated false ceiling | Oeiras | 28 m² | €2,814 |
| Capoto | Cascais | 35 m² | €3,710 |
| Capoto | Oeiras | 225 m² | €17,172 |
Projects finished in 2025 and 2026. For privacy, municipality only.
Get the price for your home →What makes the price vary
Travel, set-up and equipment cost almost the same on 20 or 200 m². That is why the price per m² drops on bigger jobs and rises on small ones.
With blown-in, a wider cavity takes more material. It is the main reason for the €25–45/m² range.
Water ingress and cracks have to be repaired before insulating. If we find them, we tell you before we quote.
Capoto includes scaffolding and painting. A lining wall is left ready to paint, without painting. Always compare what each quote includes.
Spending less
Start with the cavity, if there is one
It is the cheapest way to insulate walls. At the visit we check with a small camera whether your wall has a cavity.
Do everything in one job
Walls and attic in the same job means paying for travel and set-up only once, and the price per m² drops.
Compare quotes on the same basis
Price per m² incl. VAT, and what is included: scaffolding, painting, repairs.
Grants in September 2026
We know of no national programme currently open. In Amadora, there is REABILITA.
The municipal REABILITA programme supports work on buildings with two or more units, including thermal insulation of roofs and outside walls: up to 30% of the cost, with a maximum of €15,000, or up to 50%, with a maximum of €30,000, for buildings that are 40 years old or more and achieve a significant improvement. It is paid after the work and the final inspection.
See the guide to grants →Information checked on 25 September 2026. Confirm the conditions with the municipality (Câmara Municipal) before starting work.
“Excellent service from beginning to end! Perfect communication throughout and the team did an excellent job, on time and even below initial budget!”
Andre L. · Google review
“Prompt, knowledgeable, efficient and polite. Great price and service, and I would recommend them to anyone who, like us, had a house with no insulation.”
SRG77 · Google review
“Communication was transparent, easy and complete from the very first contact. […] The work was carried out within the estimated schedule and timeframe.”
Tomás F. · Google, translated from Portuguese
From request to final price
Today
Request
Fill in the form or call us. We reply within 24 hours to arrange the visit.
Free
Technical visit
We measure the areas and look at the walls, the cavity and the attic.
Usually within 48 h
Written quote
With the final price incl. VAT, the technique and what is included.
When you decide
Work
We set the date. At the end, we clean up before we leave.
The figures on this page give you an idea. The right price comes from the visit: we measure, look at the walls and send a written quote, usually within 48 hours. The visit is free and does not commit you to anything.
FAQ
Another question? Call us on 210 270 937 or message us on WhatsApp.
In our 2025 and 2026 projects, VAT included: blown-in insulation in cavity walls €25–45/m², capoto €70–130/m², an insulated lining wall €80–200/m², the attic floor €25–35/m² with mineral wool rolls or €30–45/m² with blown-in wool, blown-in insulation above an existing false ceiling €35–70/m² and a new false ceiling with insulation €70–160/m². Materials and labour included.
It depends on what you insulate. With 100 m² of cavity wall, blown-in usually comes to between €2,500 and €4,500. A 100 m² façade in capoto comes to between €7,000 and €13,000. A 100 m² attic, between €2,500 and €3,500. All prices incl. VAT.
If the walls have a cavity, have insulation blown into it: €25–45/m², in 1 to 3 days. The floor of an attic not used as living space is also cheap: €25–35/m² with mineral wool rolls, €30–45/m² with blown-in wool. Without a cavity, the choice is between capoto outside and a lining wall inside.
Capoto (ETICS) costs €70–130/m² incl. VAT, with scaffolding and painting included. On large façades the price per m² drops: on a 225 m² job in Oeiras it came to €76. See the capoto guide.
An insulated lining wall costs €80–200/m² incl. VAT, without painting: from 40 m² of wall, starting at €80–90/m²; on small areas, up to €200/m². If the wall has a cavity, it can be blown from inside, at €25–45/m², without losing any space.
Insulating the floor of an attic not used as living space costs €25–35/m² with mineral wool rolls and €30–45/m² with wool blown in through the roof, VAT included; the median of our projects is €31/m². An 80 m² attic with mineral wool rolls comes to between €2,000 and €2,800. See the attic guide.
Because travel, set-up and equipment cost almost the same on a small or a large job. For blown-in walls, jobs under 40 m² had a median of €62/m²; above 150 m², €18–32/m².
Yes. All prices on this page include VAT, materials and labour. The written quote states what is included in each case.
In September 2026 we know of no national programme currently open. In Amadora, the municipal REABILITA programme supports buildings and condominiums with up to 50%. See the guide to grants.
No. The technical visit and the quote are free and without obligation. The written quote usually follows within 48 hours.
Keep reading
Wall insulation
Which wall you have, and which of the three options suits it.
Read more →
Capoto (ETICS)
Prices, materials and timings of external insulation.
Read more →
Attic insulation
Options, prices and timings for the attic.
Read more →
Insulation grants
What is open in 2026, including Amadora.
Read more →
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