Dormer windows in Merseyside
If you are weighing up dormer windows and dormer loft conversions in Merseyside, we survey the roof, tell you what is actually achievable, and price it properly before anyone commits.
Dormers on Merseyside roofs
The housing stock around Merseyside runs to Victorian terraces, 1930s semis and a large stock of post-war estate housing — so the first question at survey is always which of those you have, because the structure underneath differs completely.
We survey the roof before quoting anything. Ridge height, rafter span, purlin position and the condition of the existing structure decide which dormer forms are possible — and there is no substitute for a tape measure in the loft. The survey is free and carries no obligation.
Planning permission in Merseyside
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.
What we do across Merseyside
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.
- New dormers — flat roof, pitched, gable-fronted, hipped, shed, box, L-shaped, eyebrow and cat slide forms
- Full conversions — structure, staircase, insulation, plaster and building control sign-off
- Glazing — uPVC, timber, aluminium, sash and heritage-profile conservation windows
- Cladding and roofing — tile-hung, slate-hung, lead, standing-seam zinc, cedar and GRP
- Repairs — leak tracing, flashing renewal, rot repair and blown unit replacement
If you want to know what your roof will actually take, the survey is free and there is no obligation attached to it.
Services in Merseyside
Every dormer type, locally
Flat Roof Dormers in Merseyside
The most space-efficient dormer — a flat-topped box that squares off the roof slope.
Learn morePitched Roof Dormers in Merseyside
A miniature pitched roof over the dormer — the traditional, period-correct option.
Learn moreGable-Fronted Dormers in Merseyside
A pitched dormer with a vertical gable face — the classic 'dog-house' front elevation.
Learn moreHipped Roof Dormers in Merseyside
Three sloping faces instead of a gable — softer, and often easier to get past planning.
Learn moreShed Dormers in Merseyside
A single shallow slope running with the main roof — wide, low and understated.
Learn moreFull-Width Rear Dormers in Merseyside
Wall-to-wall across the back of the roof — the biggest gain in usable floor area.
Learn moreL-Shaped Dormers in Merseyside
A rear dormer joined to a second over the outrigger — the Victorian terrace answer.
Learn moreBox Dormers in Merseyside
A simple squared projection — the workhorse dormer for bedrooms and bathrooms.
Learn moreEyebrow Dormers in Merseyside
A curved, brow-like swell in the roof — no cheeks, no vertical faces.
Learn moreCat Slide Dormers in Merseyside
The main roof continues down past the dormer — a soft, cottage-style profile.
Learn moreDormer Loft Conversions in Merseyside
The full job — structure, dormer, stairs, insulation, plaster and building control sign-off.
Learn moreBungalow Dormer Conversions in Merseyside
Turn a bungalow's roof void into a first floor — often doubling the footprint.
Learn moreVelux to Dormer Conversions in Merseyside
Already have rooflights? Convert the slope to a dormer and gain standing height.
Learn moreDormer Window Installation in Merseyside
Supply and fit of the window itself into new or existing dormer openings.
Learn moreDormer Window Replacement in Merseyside
Swap tired, draughty or rotten dormer windows without touching the structure.
Learn moreuPVC Dormer Windows in Merseyside
Low maintenance, well insulated and the most cost-effective frame for a dormer.
Learn moreTimber Dormer Windows in Merseyside
Engineered hardwood or softwood — the right answer on period and listed roofs.
Learn moreAluminium Dormer Windows in Merseyside
Thermally broken aluminium — the slimmest frames and the largest possible glass area.
Learn moreSash Dormer Windows in Merseyside
Vertical sliding sashes sized and detailed for a dormer opening.
Learn moreConservation Dormer Windows in Merseyside
Heritage-profile dormers and glazing for conservation areas and listed buildings.
Learn moreDormer Cladding in Merseyside
Re-clad tired dormer cheeks and faces in tile, lead, zinc, timber or GRP.
Learn moreGRP Fibreglass Dormer Roofing in Merseyside
Seamless glass-reinforced polyester on flat dormer tops — no joints, no seams.
Learn moreLead & Zinc Dormer Roofing in Merseyside
Traditional code lead and standing-seam zinc for dormer roofs, cheeks and flashings.
Learn moreDormer Window Repairs in Merseyside
Leaks, rot, failed flashings, blown units and draughts — diagnosed and put right.
Learn moreWhat homeowners say
Judged on the junctions, not the sales pitch
“The survey was the useful bit — he told us the ridge height wouldn't take what we'd been sold elsewhere, and offered a shed dormer instead. Glad we listened.”
— Homeowner, Merseyside“Scaffold went up on the Monday, roof was open and weathertight by the Thursday. No drama, no surprises on the invoice.”
— Homeowner, Merseyside“We'd had two leaks patched by other firms. They traced it to the back gutter in an hour and it hasn't come back since.”
— Homeowner, MerseysideComments shown are representative of feedback received. Verified reviews are being collected from launch.
FAQs
Dormers in Merseyside — FAQs
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.
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.
What guarantees do you provide?
Structural work carries a ten-year guarantee, GRP and EPDM flat roofing twenty years, windows ten years on frames and sealed units, and lead and zinc work is covered for workmanship for ten years. You also receive the building control completion certificate, which is the document that actually matters when you sell.
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.
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 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.
Find out what your roof will take
A free measured survey in Merseyside tells you what is achievable, what it needs, and what it costs — before you commit to anything.