Lead & Zinc Dormer Roofing in Wiltshire
If you are weighing up lead & zinc dormer roofing in Wiltshire, we survey the roof, tell you what is actually achievable, and price it properly before anyone commits.
Lead & Zinc Dormer Roofing — indicative geometry
Lead & Zinc Dormer Roofing for Wiltshire homes
Wiltshire is a mix of Victorian and Edwardian terraces, interwar semi-detached houses and post-war bungalows, and each of those wants a different dormer form — which is why we survey before quoting rather than pricing off a photograph.
Lead fails from thermal movement, not from age — which means bay sizes, code thickness and fixing centres decide whether a dormer roof lasts thirty years or three. We work to Lead Sheet Association guidance on every detail: welted bays, correct laps, chase depths and clip spacing. Standing-seam zinc gives a similar lifespan with a lighter, more contemporary line.
Key specification
| Lead codes | Code 4, 5 and 6 to LSA guidance |
|---|---|
| Bay sizes | Sized to code and orientation |
| Zinc | Standing seam, natural or pre-weathered |
| Substrate | Ventilated deck with separation layer |
Planning and building control in Wiltshire
We run the permitted development test on your specific property: set-back from the eaves, height against the ridge, volume allowance and whether an Article 4 direction applies locally.
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 Wiltshire use us
We only do dormers. That sounds like a limitation until you have watched a general builder improvise a back gutter on a wet Thursday.
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 Wiltshire
FAQs
Lead & Zinc Dormer Roofing in Wiltshire — FAQs
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.
Can you match my existing roof tiles?
Usually. Most common clay and concrete profiles are still in production or available reclaimed, and we source a match at survey stage so you see it before work starts. Where a discontinued profile cannot be matched exactly, we normally recommend taking tiles from a less visible slope for the dormer and using the closest new match on the hidden elevation.
Can you convert an existing Velux loft to a dormer?
Yes, and it is usually a shorter job than starting from scratch because the floor, staircase and services already exist. We verify the existing floor structure and any previous building control approval first, then cut and form the dormer into the finished room. Expect the room to be out of use for three to five weeks.
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.
Find out what your roof will take
A free measured survey in Wiltshire tells you what is achievable, what it needs, and what it costs — before you commit to anything.