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We do all three
If your walls have a cavity, the alternative to capoto (ETICS) is blown-in insulation: it costs about half the price, or less, and is done in 1 to 3 days, without changing the façade. Capoto is still the most complete insulation, because it wraps the whole façade.
By David Francisco, civil engineer at EnergyEase · Updated 18 October 2026
“As for the process, I can only say that everyone involved was more professional than average, very helpful and quick in carrying out the work, meeting the agreed deadlines.”
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Free technical visit
with an inspection camera
Published prices
per m², VAT included
We do all three
capoto, blown-in and lining walls
Side by side
Prices incl. VAT from our 2025 and 2026 projects. Capoto is the benchmark; next to it, the two alternatives.
| Comparison | Outside Capoto (ETICS) | In the cavity Blown-in insulation | Inside Insulated lining wall |
|---|---|---|---|
| Price per m², incl. VAT | €70–100 | €20–45 | €70–150 |
| Example: 100 m² of façade | €7,000–10,000 | €2,000–4,500 | Rarely used for a whole house: usually one or two rooms |
| Duration, typical house | 3 to 6 weeks | 1 to 3 days | 3 to 7 days |
| Which wall | Any outside wall | Cavity wall with a gap of 4 cm or more | Any wall, stone included |
| What it insulates | The whole façade, including pillars, beams and slab edges | The wall, through its cavity | The inside face of the wall |
| The façade | It ends up new, with new render and colour | It stays the same; the holes are closed | It stays the same |
| Who decides | It changes the façade: in a building the owners decide, and the Câmara may need to be involved | It does not change the façade: in most cases, flat by flat | Work inside the home, flat by flat |
Outside
Capoto (ETICS)
In the cavity
Blown-in insulation
Inside
Insulated lining wall
Capoto includes scaffolding and painting; blown-in includes closing the holes; lining walls exclude painting. Lining walls do not compare well per m²: they are mostly done on small areas, where the m² goes up. Capoto price tables from 2020 still circulate online, many covering materials only; these are prices of complete jobs. The final price comes in the written quote, after the visit.
The most chosen alternative
When the wall has a cavity, four reasons weigh more than anything else.
€20–45/m² against €70–100/m² for capoto, VAT included. On a 100 m² façade: about €2,000–4,500 against €7,000–10,000.
On a façade of about 200 m², blown-in is done in around 3 days. Capoto, with scaffolding, takes more than a month.
We blow in from outside or inside. Because the façade does not change, in most cases you can insulate just your flat, with no process at the Câmara.
According to ADENE, a brick cavity wall in winter zone I1, which covers most of the Lisbon region, needs 3 to 4 cm of insulation to meet the maximum U of 0.50. A cavity of 4 cm or more, filled with mineral wool, gets there in most cases. See the values
How we do blown-in insulation, step by step →
Real quotes, one house in Cascais
Capoto, façade
€15,158
Blown-in, same house
€5,724
We quoted both solutions, both ready to paint. The walls had a cavity and the owner chose blown-in: well under half the price, and done in days instead of weeks.
We do capoto too
Capoto is the most complete wall insulation there is. It is worth it when the result matters more than time or budget.
Capoto (ETICS)
Choose capoto if
In 10 seconds
Does your wall have a cavity?
Does the façade need work?
Our suggestion
Blown-in insulation
Your wall has a cavity and the façade is fine: blown-in gives you an insulated wall in 1 to 3 days, for about half the price of capoto, or less.
Our suggestion
Capoto, or blown-in plus painting
If the façade needs work, capoto solves both in one go. With a cavity, you can also blow in and paint the façade: that costs less. At the visit we compare the two.
Our suggestion
Capoto
Without a cavity, the insulation goes outside: capoto insulates the wall and renews the façade in the same job.
Our suggestion
Insulated lining wall
Without a cavity and without touching the façade, you insulate from inside, room by room.
Our suggestion
Blown-in, from inside
Cannot touch the façade? With a cavity, we blow in from inside the home and the façade stays exactly as it is.
Our suggestion
We check at the free visit
We drill a small hole and look inside the wall with a camera. Then we tell you which of the three suits it.
What the law says
Portaria no. 138-I/2021 sets the maximum thermal transmittance (U) of outside walls in new or renovated homes. The lower the U, the better the wall insulates. In zone I1, which covers most of the Lisbon region, the maximum is 0.50.
ADENE calculates that a brick cavity wall in zone I1 needs 3 to 4 cm of insulation to get there. That is the width of a typical cavity. So with blown-in, most cavity walls in this region end up within the legal value. Capoto can go further, because you choose the thickness and it also covers pillars and beams.
| Winter zone | Maximum U | Insulation needed* |
|---|---|---|
| Zone I1The mildest. Most of the Lisbon region; 58% of buildings. | 0.50 | 3–4 cm |
| Zone I2 | 0.40 | 5–6 cm |
| Zone I3The coldest. | 0.35 | 6–8 cm |
U in W/(m².°C). Sources: Portaria n.º 138-I/2021, Table 1; ADENE, Wall insulation. *Brick cavity wall (1980 to 1995), according to ADENE. The exact zone depends on the municipality and altitude.
“I contacted EnergyEase to blow thermal insulation into the walls of my apartment that face the outside.
Communication was transparent, easy and complete from the very first contact, and all my questions throughout the project were properly answered.
All the documents for the job (quote, technical data sheets of the materials, intervention report, invoices and receipts) were duly handed over to me.
The work was carried out within the estimated hours and timeframe and, once it was finished, the technicians cleaned up the debris both in the apartment and in the entrance hall of the building's common areas.
I am writing this review one week after the work was completed. The walls are more thermally stable (much less cold to the touch), but over the coming months I will be able to judge better how effective the work has been.
I strongly recommend EnergyEase. Serious, trustworthy professionals!”Tomás F. · Google, translated from Portuguese
“I was very satisfied with the work. The team insulated the walls and the roof of part of the bedroom, with great care and professionalism.
Besides the quality of the work, I would also like to highlight the excellent finishes: the holes made in the ceiling were completely concealed and the walls were repaired and painted with great care.
The improvement in the bedroom's thermal comfort was very significant. I recommend them without hesitation.”Tomás M. · Google, translated from Portuguese
“I started a renovation without knowing that the property had a wall cavity, and without even knowing what blown-in insulation was. I am now finishing the work and I am very happy with the service.
Our renovation is in the Alentejo, but even so the whole service from Nuno and his team was 5 stars: from the quick quote and the answers to my questions, since I did not know what I was doing, to the team that travelled from Lisbon to do the work.
Thank you, EnergyEase”Mário L. · Google, translated from Portuguese
For the full picture
There are two more external options you will hear about. We do not do them, but here is what they are.
We do not do this
The insulation sits behind a separate cladding of stone, ceramic or panels, with a ventilated air gap in between. It is a complete façade job, more common on new buildings.
We do not do this
A render with insulating aggregates, applied over the façade. It insulates less per centimetre than capoto boards: ADENE gives about 0.050 W/(m·K), against 0.040 for EPS.
At the free visit we look inside the wall with a camera and tell you which of the three options suits it. No obligation.
If the wall has a cavity, blown-in insulation: the cavity is filled with mineral wool through 37 mm holes. It costs €20–45/m² incl. VAT and is done in 1 to 3 days. Without a cavity, the alternative is to insulate from inside with a lining wall.
Capoto is more complete, because it wraps the whole façade and cuts the thermal bridges at pillars and beams. Blown-in insulates the wall itself. In the Lisbon region, according to ADENE, a cavity wall needs 3 to 4 cm of insulation to meet the law, and a typical cavity gets there. The rest counts too: about half the price, or less, days instead of weeks and, in most cases, no change to the façade.
On our projects, incl. VAT: capoto €70–100/m², with scaffolding and painting; blown-in €20–45/m², with the holes closed. On a 100 m² façade, about €7,000–10,000 against €2,000–4,500.
Blown-in: 1 to 3 days in a typical house. Capoto: 3 to 6 weeks, with scaffolding. Lining wall: 3 to 7 days.
Capoto changes the look of the façade, so the Câmara may need to be involved and, in a building, the owners have to approve it. Blown-in does not change the façade: in most cases it needs no such process. At the visit we tell you what applies to your home.
With blown-in, in most cases yes: we fill just your own walls, from inside or outside. With a lining wall too. Capoto is normally done on the whole façade.
At the free technical visit we drill a small hole and look inside the wall with a camera. That tells us whether there is a cavity, how wide it is and whether it is empty.
Yes. We do capoto with EPS or mineral wool, blown-in and lining walls. That is why we tell you which one suits you, not just the one we sell.
Keep reading
We do capoto, blown-in and lining walls in Lisbon, Cascais, Oeiras, Sintra, Almada and Setúbal
Free technical visit, no obligation
Don't just take our word for it - hear from those who have experienced the EnergyEase difference.
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