Dormer Cladding in Conwy
Conwy homeowners come to us for dormer cladding that are properly detailed at the junctions — because that is where dormers succeed or fail.
Dormer Cladding — indicative geometry
Dormer Cladding for Conwy homes
The housing stock around Conwy runs to Victorian and Edwardian terraces, interwar semi-detached houses and post-war bungalows — so the first question at survey is always which of those you have, because the structure underneath differs completely.
Dormer cheeks take driving rain on a vertical face with no overhang, which is why they are usually the first thing to fail. Re-cladding strips back to the sheathing, checks and replaces any soft timber, adds a fresh breather membrane and battens, and re-covers in your chosen finish. The structure stays; the appearance and the weather resistance are new.
Key specification
| Finishes | Plain tile-hung, slate-hung, lead, zinc, cedar, GRP |
|---|---|
| Build-up | Sheathing, breather membrane, battens, finish |
| Timber check | All studs and noggins probed and replaced as needed |
| Insulation | Upgrade to 0.18 W/m²K available |
Planning and building control in Conwy
Whether you need planning permission or a lawful development certificate depends on the elevation, the volume already used and the local authority's Article 4 position — all of which we confirm before design work starts.
Building regulations approval is separate and always required. We submit the application, book the inspections around the programme and hand you the completion certificate at the end — the document a buyer's surveyor will ask to see.
Why homeowners in Conwy use us
One quotation covers scaffold, structure, weatherproofing, glazing, plastering and sign-off. You are not coordinating four trades who each blame the last one.
The quickest route is a photograph of the rear elevation over WhatsApp — we can usually tell you what is feasible before anyone visits.
Other dormer work in Conwy
FAQs
Dormer Cladding in Conwy — FAQs
What guarantees do you provide?
Structural work carries a ten-year guarantee, GRP and EPDM flat roofing twenty years, windows ten years on frames and sealed units, and lead and zinc work is covered for workmanship for ten years. You also receive the building control completion certificate, which is the document that actually matters when you sell.
Can you build a dormer in winter?
Yes, with adjustments. Temporary weather protection over the scaffold lets structural work continue in most conditions. GRP roofing needs dry conditions above about 5°C to cure properly, so in a cold spell we either sequence it differently or specify EPDM, which is unaffected.
How much does a dormer window cost?
A single flat roof dormer typically runs from around £9,000 to £20,000 supplied and fitted, depending on width, cladding finish and access. A full-width rear dormer on a semi is usually £28,000 to £45,000, and a complete dormer loft conversion including stairs, insulation, plaster and building control sign-off is more commonly £40,000 to £70,000. Our online guide-price tool gives you an indicative range in about a minute.
Does a dormer need building regulations approval?
Yes, always — permitted development covers planning, not building control. A dormer needs approval for structure, thermal performance under Part L, fire escape and protected route under Part B, and stairs under Part K if a staircase is involved. We handle the application, the inspections and the completion certificate.
Why is my dormer leaking?
In our experience the window itself is the cause less than a fifth of the time. Far more often it is the apron flashing at the dormer front, the lead soakers where the cheeks meet the roof slope, the back gutter behind a pitched dormer, or a split at an upstand in the flat covering. Water then tracks along a rafter and appears somewhere else entirely, which is why we trace the path before quoting.
Find out what your roof will take
A free measured survey in Conwy tells you what is achievable, what it needs, and what it costs — before you commit to anything.