Pitched Roof Dormers in Flintshire
Flintshire homeowners come to us for pitched roof dormers that are properly detailed at the junctions — because that is where dormers succeed or fail.
Pitched Roof Dormers — indicative geometry
Pitched Roof Dormers for Flintshire homes
Most of the dormer work we take on around Flintshire is on Victorian and Edwardian terraces, interwar semi-detached houses and post-war bungalows, where the ridge height and the position of the existing purlins set the limits.
A pitched roof dormer carries its own small ridge and two slopes, tiled or slated to match the main roof. It sheds water the way the rest of the house does, ages the same way, and is very often the only form a conservation officer will accept on a front elevation. You lose a little internal height at the head compared with a flat top, and you gain a roofline that nobody questions.
Key specification
| Typical projection | 1.2m – 3.0m wide |
|---|---|
| Pitch | 35° – 45°, usually matched to main roof |
| Roof finish | Plain tile, pantile or natural slate |
| Flashing | Code 4/5 lead soakers and back gutter |
Planning and building control in Flintshire
Rear dormers on houses often sit inside permitted development, but the volume allowance is consumed by any previous loft or rear extension — so we check the planning history for the address before we say yes.
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 Flintshire use us
We would rather tell you at survey that your ridge height will not take what you want than take a deposit and find out in week three.
Book the survey, get the fixed written price, and decide in your own time. Nothing about that process commits you to anything.
Other dormer work in Flintshire
FAQs
Pitched Roof Dormers in Flintshire — FAQs
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.
Will a dormer add value to my house?
A properly built and signed-off dormer conversion adding a bedroom and bathroom typically returns a meaningful share of its cost in value, and more in areas where floor space is scarce. The building control completion certificate is what makes the space count as habitable floor area on a valuation — without it, surveyors will not include it.
Is scaffolding included in the price?
Yes. Every quotation we issue includes scaffold design, erection, weekly inspection, hire for the programme and dismantling. Scaffold appearing as an extra afterwards is one of the more common complaints about dormer work, so we price it in from the start.
Find out what your roof will take
A free measured survey in Flintshire tells you what is achievable, what it needs, and what it costs — before you commit to anything.