Aluminium Dormer Windows in Edinburgh and the Lothians
If you are weighing up aluminium dormer windows in Edinburgh and the Lothians, we survey the roof, tell you what is actually achievable, and price it properly before anyone commits.
Aluminium Dormer Windows — indicative geometry
Aluminium Dormer Windows for Edinburgh and the Lothians homes
Roofs across Edinburgh and the Lothians are dominated by Victorian and Edwardian terraces, interwar semi-detached houses and post-war bungalows, and that mix decides almost everything about what a dormer here needs to look like and how it has to be built.
A dormer usually has one window and one aspect, so every millimetre of frame you remove is daylight you gain. Thermally broken aluminium gives sightlines around 40% slimmer than uPVC for the same structural span, in any RAL colour, with a service life measured in decades. It is the premium choice on a contemporary flat roof dormer.
Key specification
| System | Polyamide thermally broken |
|---|---|
| Sightlines | Approx. 40% slimmer than uPVC |
| Finish | Any RAL, polyester powder coated |
| U-value | 1.4 W/m²K typical, 1.0 with triple |
Planning and building control in Edinburgh and the Lothians
If the property is in a conservation area or the dormer faces the road, a full planning application is needed. We prepare the drawings and handle the submission either way.
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 Edinburgh and the Lothians use us
Everything is priced from a measured survey, not a phone call — which is why our quotations tend to be the ones that still hold at the end of the job.
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 Edinburgh and the Lothians
- L-Shaped Dormers in Edinburgh and the Lothians
- Cat Slide Dormers in Edinburgh and the Lothians
- Velux to Dormer Conversions in Edinburgh and the Lothians
- uPVC Dormer Windows in Edinburgh and the Lothians
- Conservation Dormer Windows in Edinburgh and the Lothians
- Lead & Zinc Dormer Roofing in Edinburgh and the Lothians
- Pitched Roof Dormers in Edinburgh and the Lothians
- Shed Dormers in Edinburgh and the Lothians
FAQs
Aluminium Dormer Windows in Edinburgh and the Lothians — FAQs
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.
What insulation do dormers need?
Current building regulations want around 0.15–0.18 W/m²K for a new dormer roof and 0.18 W/m²K for the cheeks and front. In practice that is a warm-roof build-up using 100–150mm of PIR insulation above or between the structure, with a continuous vapour control layer on the warm side. Getting the VCL continuous matters more than the insulation thickness.
Find out what your roof will take
A free measured survey in Edinburgh and the Lothians tells you what is achievable, what it needs, and what it costs — before you commit to anything.