External duct installation at height from ground floor to roof.

We install extract flues, boiler flues and ventilation ducts up façades and light wells, firmly anchored and sealed, working on ropes from the roof with no scaffolding.

5/5 · Google reviews

When is an external duct needed?

  • Premises with no flue to the roof
  • Boiler or stove without a chimney
  • Old duct that is loose or rusted
  • Extraction that does not draw well

What the duct installation includes

  • Route survey

    We define the route, diameter and outlet to suit the appliance and the RITE.

  • Twin-wall ducting

    Stainless or galvanised steel, insulated where the use requires it.

  • Brackets and clamps

    Anchored to the façade at regular intervals so the duct does not vibrate or move.

  • Penetrations and joints

    Wall or slab penetrations and sealed joints to prevent leaks and drips.

  • Roof outlet

    Finished with a cowl above the roof line, away from windows.

  • Discreet finish

    Powder-coated or painted duct in the façade colour, if you wish.

How we install the duct

We visit the building, measure the route from the appliance to the outlet and check the façade and roof. You then receive a detailed written quote.

Working on ropes, we fix brackets and clamps and install the duct in sections from the bottom up, sealing every joint and wall penetration. A site manager coordinates the work with the business and the residents.

We finish with the roof outlet, check the draught and airtightness, and clear all debris from the pavement and roof.

Get a quote for an external duct

01 03

First

What do you need?

Your home

Where is the work?

Your details

How can we contact you?

I’d rather write directly

Frequently asked questions

01

Can a duct from a ground-floor unit be taken up to the roof without scaffolding?

Yes. We install the duct in sections, working on ropes from the roof, without taking up the pavement with structures or closing the street.

02

Does the duct have to come out above the roof?

For smoke and boiler flues, usually yes, at the height and distance from windows set by regulations. During the visit we check what your case requires.

03

What do you do with the old duct?

We dismantle it in sections from the ropes, lower it carefully and take it away, then make good the old fixing points on the façade.

04

How much does a complete renovation cost?

There is no single price. The estimate depends on the condition and size of the home, the scope of the project, materials and work required. Tell us your idea so we can assess your specific case.

05

How long does a renovation take?

It depends on the type of home, the scope of the work and the project's constraints. Once we have studied the renovation, we can give you a more accurate estimate.

06

Can a home be renovated while people still live in it?

It depends on the scope, estimated duration and condition of the home. When we study the project, we will assess whether it is feasible and what precautions or alternatives should be considered.

07

How can I request an estimate?

Choose what you want to renovate, tell us whether the work is partial or complete, and leave your name, phone number and email. This lets us provide initial guidance. You can also write to us directly on WhatsApp.

Barcelona and Girona · 2 provinces
Map of Catalonia with the provinces of Barcelona and Girona highlighted

About us

High-quality renovations, with deadlines that are met.

We renovate flats and houses in the provinces of Barcelona and Girona with clear planning, close follow-up and attention to every detail.

Three members of the Romero-Vera team on a building site
BuilderManagerBuilder
A member of the Romero-Vera team in the office
Office administrator
20Years of experience
5/5Google reviews
  • Initial visit with no obligation
  • Detailed and accurate estimate
  • Follow-up until the work is finished

Need a duct run up the façade?

Message us on WhatsApp or get a quote: we will study the route and explain how we would install it.

WhatsApp Calculate an estimate
Got a question? Message us on WhatsApp