Dormer windows in Penicuik
Our teams install dormer windows and dormer loft conversions throughout Penicuik, handling structure, weatherproofing, glazing and finish as one job with one point of contact.
What we build in Penicuik
Because Penicuik is largely Victorian and Edwardian terraces, interwar semi-detached houses and post-war bungalows, the roof pitches and span widths we meet are fairly predictable, and that makes feasibility a quick conversation rather than a guess.
Whether that is a single flat roof dormer to make a back bedroom usable, or a full-width rear dormer with a bedroom and en-suite, the process is the same: a free measured survey first, a fixed written price second, and nothing else until you have both in front of you.
Planning permission in Penicuik
Whether you need planning permission or a lawful development certificate depends on the elevation, the volume already used and the local authority's Article 4 position — all of which we confirm before design work starts.
Penicuik sits in Edinburgh and the Lothians, and local authority interpretation of the volume allowance does vary — which is why we check the planning history at your specific address rather than assuming the neighbours' dormer sets a precedent.
How the job runs
Scaffold and protection
Scaffold designed, erected and inspected. Temporary weather protection over the work area before anything is opened.
Weatherproofing
Deck, insulation, membrane or lead, cheek cladding, flashings and gutters — the dormer is weathertight from this point.
Finish and sign-off
Plaster, electrics, decoration and making good, final building control inspection and your completion certificate.
Design and consent
Measured drawings, elevations and sections. We submit the planning application or lawful development certificate and the building regulations application.
We only do dormers. That sounds like a limitation until you have watched a general builder improvise a back gutter on a wet Thursday. Send us the address and roughly what you are hoping to gain, and we will come back with a realistic answer rather than an optimistic one.
Popular in Penicuik
Dormer work we are asked for most
Gable-Fronted Dormers
A pitched dormer with a vertical gable face — the classic 'dog-house' front elevation.
Learn moreL-Shaped Dormers
A rear dormer joined to a second over the outrigger — the Victorian terrace answer.
Learn moreDormer Loft Conversions
The full job — structure, dormer, stairs, insulation, plaster and building control sign-off.
Learn moreDormer Window Replacement
Swap tired, draughty or rotten dormer windows without touching the structure.
Learn moreSash Dormer Windows
Vertical sliding sashes sized and detailed for a dormer opening.
Learn moreLead & Zinc Dormer Roofing
Traditional code lead and standing-seam zinc for dormer roofs, cheeks and flashings.
Learn moreFAQs
Dormers in Penicuik — FAQs
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.
Does a dormer need building regulations approval?
Yes, always — permitted development covers planning, not building control. A dormer needs approval for structure, thermal performance under Part L, fire escape and protected route under Part B, and stairs under Part K if a staircase is involved. We handle the application, the inspections and the completion certificate.
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.
Can I put a dormer on the front of my house?
Front-facing dormers are not covered by permitted development and always need a full planning application. Approval depends heavily on the street scene — planners look at whether other dormers already exist on the road, and at proportion, position and materials. Hipped and pitched forms are approved far more often than flat boxes on a front elevation.
Will a dormer add value to my house?
A properly built and signed-off dormer conversion adding a bedroom and bathroom typically returns a meaningful share of its cost in value, and more in areas where floor space is scarce. The building control completion certificate is what makes the space count as habitable floor area on a valuation — without it, surveyors will not include it.
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.
Find out what your roof will take
A free measured survey in Penicuik tells you what is achievable, what it needs, and what it costs — before you commit to anything.