Shed Dormers in Isle of Wight
Our teams install shed dormers throughout Isle of Wight, handling structure, weatherproofing, glazing and finish as one job with one point of contact.
Shed Dormers — indicative geometry
Shed Dormers for Isle of Wight homes
Isle of Wight 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.
A shed dormer has one plane, pitched more shallowly than the main roof, running back to meet it. Because there are no hips or valleys it is the cheapest wide dormer to build, and it can stretch across most of a rear elevation without looking like a bolted-on box. It suits 1930s semis and chalet bungalows particularly well.
Key specification
| Typical projection | 2.4m – 7.0m wide |
|---|---|
| Pitch | 15° – 25°, shallower than main roof |
| Roof finish | Interlocking tile, slate or membrane |
| Structure | Rafters spanning to a ridge beam |
Planning and building control in Isle of Wight
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 Isle of Wight 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.
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 Isle of Wight
- Velux to Dormer Conversions in Isle of Wight
- uPVC Dormer Windows in Isle of Wight
- Sash Dormer Windows in Isle of Wight
- GRP Fibreglass Dormer Roofing in Isle of Wight
- Flat Roof Dormers in Isle of Wight
- Hipped Roof Dormers in Isle of Wight
- Box Dormers in Isle of Wight
- Dormer Loft Conversions in Isle of Wight
FAQs
Shed Dormers in Isle of Wight — FAQs
What is the difference between a dormer and a Velux?
A rooflight sits flush in the roof slope and gives you light without any extra height — you still have a sloping ceiling. A dormer projects out from the roof and creates vertical walls with a level ceiling behind them, so you gain genuinely usable standing space and floor area, not just daylight.
Do you work on listed buildings and in conservation areas?
Yes. That work is detail-led: matching sightlines, glazing bar widths, cill projections and cheek finishes to what survives, and specifying timber, lead and natural slate rather than modern equivalents. We prepare the drawings and heritage statement for listed building consent alongside the planning application.
Can a dormer include an en-suite?
Very often, yes — a full-width or L-shaped dormer usually has enough floor area for a bedroom plus a shower room. The practical constraints are getting soil and waste down to an existing stack, and whether the head height over the shower tray works. Both are settled at survey.
What happens to my existing loft insulation?
It comes out. Insulation at ceiling-joist level is in the wrong place once the loft is a room — the thermal line moves up to the new roof and dormer build-up. We remove and dispose of the old quilt and insulate the new envelope, which is also what makes the room comfortable to use in August.
How long does a dormer take to build?
A single box or flat roof dormer is typically three to five weeks on site. A full-width rear dormer runs five to eight weeks, and an L-shaped dormer on a terrace with an outrigger is closer to seven to ten. A complete dormer loft conversion including the staircase, services and finishes is usually eight to twelve weeks from scaffold up to sign-off.
Find out what your roof will take
A free measured survey in Isle of Wight tells you what is achievable, what it needs, and what it costs — before you commit to anything.