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RooflightInstallers.co.uk
Dorset · England

Dome rooflight replacement in Dorset

Before any dome rooflight is fitted in Dorset, three measurements get checked: the builder's opening, the external size of the unit, and the upstand height above the finished roof, or the batten and tile details on a pitched roof. Get those right and the rest of the job follows. We handle dome rooflight replacement in every part of Dorset, with 7 towns listed on the site and the countryside between them covered too.

Guide prices in Dorset

Like-for-like dome

£395 – £695including VAT at 20%

Old dome taken off, new multi-skin dome fixed to the sound existing kerb

Dome with kerb adaptor

£695 – £1,195including VAT at 20%

New dome where the kerb needs an adaptor or packing

Upgrade to glass

£1,095 – £1,695including VAT at 20%

Dome swapped for a double-glazed glass rooflight on the existing sound kerb, as in our replacement service

Guide ranges for supply & fit, per dome; building control notice fee extra on homes in England and Wales. Your price is fixed in a written quote after we have seen photos or surveyed. Scaffold, access towers or a crane are priced separately if the job needs them, and building control fees, where a job needs them, are shown as their own line.

Towns we list in Dorset

We work right across England, and Dorset is covered on the same footing as everywhere else. There is no showroom or depot to visit. The survey happens at your property or, for fit-only jobs, from your photos. If your address is remote or reached by ferry, tell us early and we will confirm what arrangement is needed before quoting.

What the job includes

  • Adaptor or packing fitted where the old kerb needs it
  • Kerb checked for rot, size and height before the new unit goes on
  • Membrane checked where it meets the kerb, with small repairs made
  • Kerb size and adaptors — We measure every kerb against the new dome's sizes.
  • Upgrading to glass — We check whether the kerb suits a glass unit before recommending one.

Rules that apply in England

In England, a new rooflight opening generally needs building regulations approval because the roof structure is altered and the glazing must meet energy rules: 2.2 W/m²K for a rooflight in an existing home, or 1.4 W/m²K (or WER Band B) for a roof window. Planning is often not needed on a house: permitted development covers rooflights that stand no more than 0.15 m proud of the roof slope and sit below the highest part of the roof. Flats, listed buildings and areas with an Article 4 direction are different, so we check your address first.

Common questions in Dorset

What if my roof opening is the wrong size for the dome rooflight?

We find out before the fitting day, not on it. If the opening is slightly out, it can usually be adjusted by trimming or by packing out the upstand. If it is a long way off, the choice is between altering the opening and changing the unit. Bear in mind that rooflights are often sold by builder's opening size rather than external size, so check which one your measurement refers to.

How does payment work?

Payment terms are set out on your written quote before you accept it. Depending on the job, that may mean a deposit, stage payments for larger work, or payment on completion. The contract is with S&K Property Investments and Improvement Ltd, part of the S&K Group. Nothing is added without your agreement: if something unexpected comes up, we discuss it and agree any change before carrying on.

Can you remove and dispose of the old rooflight?

Yes. Taking out the old unit is part of any replacement job, and it leaves with the rest of the waste unless you ask to keep it. Old domes, glass and frames go through proper waste routes. If removal turns up a rotten kerb or damaged decking, we show you what we have found and agree the repair with you before going any further.

Rear extension at dusk with lit rooflights and a roof lantern
Ready when you are

Fitting in Dorset

Send photos and rough sizes, or ask for a survey visit for install work. You get one fixed written price before anything starts.

CallGet a quote