Eyebrow Dormers in Cumbria
We design, build and weatherproof eyebrow dormers for homeowners across Cumbria, working from first survey through to building control sign-off.
Eyebrow Dormers — indicative geometry
Eyebrow Dormers for Cumbria homes
Because Cumbria is largely slate and stone cottages, Victorian terraces and lakeland farmhouses, the roof pitches and span widths we meet are fairly predictable, and that makes feasibility a quick conversation rather than a guess.
An eyebrow dormer is a wave in the roof covering rather than a box on top of it. The rafters sweep up and over the window in a shallow arc and the tiling or slating is coursed round the curve. It is the most demanding dormer to build well — it wants a roofer who can swan-neck a course of plain tiles — and it is unmatched on thatched, cottage and Arts and Crafts roofs.
Key specification
| Typical width | 1.0m – 2.4m |
|---|---|
| Rise | 300mm – 600mm at the centre |
| Roof finish | Plain tile or slate, coursed round |
| Glazing | Curved head timber casement or fixed light |
Planning and building control in Cumbria
Getting the consent route right at the start saves months. We establish whether it is permitted development, a lawful development certificate or a full application on the first visit.
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 Cumbria use us
The completion certificate is part of the deliverable, not an afterthought. It is the document that makes the space count when you come to sell.
If you want to know what your roof will actually take, the survey is free and there is no obligation attached to it.
Other dormer work in Cumbria
FAQs
Eyebrow Dormers in Cumbria — FAQs
How disruptive is a dormer build?
Less than people expect, because most of the work happens above your ceilings and is reached from the scaffold. The noisy phases are opening up and installing steels, typically two to four days. Once the staircase is cut in there is dust and traffic through the house, and we sheet and protect the route for that period.
Do dormer windows need to be fire escape windows?
In a loft conversion, at least one window in each habitable room generally needs to meet escape requirements — a clear opening of at least 0.33m², minimum 450mm in both height and width, with the bottom of the opening between 800mm and 1100mm above floor level. We specify the opening lights to meet this as standard.
Do I need planning permission for a dormer window?
Rear dormers on a house often fall under permitted development, provided the dormer is set at least 200mm back from the eaves, sits below the ridge line, uses materials similar in appearance to the existing house, and stays within the volume allowance — 40m³ for a terrace, 50m³ for a semi or detached. Front-facing dormers, flats and maisonettes, listed buildings, conservation areas and any property with an Article 4 direction all need a full planning application. We check the constraints on your specific address before we quote.
Will my roof be open to the weather?
No. The roof is only opened once the scaffold, temporary weather protection and materials are all on site, and the dormer is made weathertight — structure, deck, membrane and temporary glazing — before the crew leaves at the end of the opening-up phase. We do not open a roof on a Friday afternoon.
What is the best roof covering for a flat dormer?
GRP fibreglass and EPDM rubber are the two we specify most. GRP cures into a single seamless laminate with bonded trims and suits small tops with several upstands. EPDM is a one-piece membrane that copes better with movement on larger spans. Both carry twenty-year guarantees; mineral felt is cheaper but has a materially shorter life.
Find out what your roof will take
A free measured survey in Cumbria tells you what is achievable, what it needs, and what it costs — before you commit to anything.