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RooflightInstallers.co.uk
Bicester · OX26 · Oxfordshire

Rooflight upstands & kerbs in Bicester

Replacing an old dome or a failed rooflight often means the kerb underneath has to change too: it may be rotten, too low for the new unit or the wrong size. We strip back what is needed, build a new upstand in Bicester to the new unit's dimensions, insulate it and dress the roof covering up to it. Where only part of the kerb has failed, we say so and price the smaller repair. The scope is set out in a written quote before work starts.

Guide price from £245 · Labour and materials, rooflight not included

Bicester guide prices

Timber upstand

£245 – £445including VAT at 20%

Treated timber kerb built square and level to the maker's size

Insulated upstand

£445 – £845including VAT at 20%

Kerb with insulation and the roof membrane turned up and dressed

Large or with trimming

£845 – £1,445including VAT at 20%

Bigger kerbs or where joists need trimming first

Guide ranges for labour and materials, rooflight not included. 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.

Areas around Bicester we cover

Distance is rarely the deciding factor. A roof in Oxford, 11 miles from Bicester, gets the same survey, the same written quote and the same fitting process as one in OX26, OX6 and OX25. What changes the price is the job itself: size of unit, roof type, access and lifting. Cowley, around 12 miles out, is treated the same way.

What the job includes

  • Treated timber frame fixed down to the deck and joists
  • Insulation fitted to the upstand faces to limit heat loss
  • Roof membrane turned up, bonded and finished at the kerb top
  • Roof covering compatibility — We check what the roof is covered in before choosing how the membrane meets the kerb.
  • Energy limit for site-built kerbs — We insulate upstands to meet the limit for site-built upstands, which is 0.35 W/m²K in England and Wales.

Fitting your rooflight upstand, step by step

On the day, the fitters check the opening and the roof deck around it, then cut and fix treated timber to the maker's kerb size, square and level, with any fall the rooflight needs built in. Insulation goes on the faces that need it, and the roof membrane is turned up and dressed so the kerb is weathertight before anyone leaves. Most upstand jobs take half a day to a day.

Regulations for Bicester properties

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.

Getting a price from photos

What we cannot see, we have to guess, and guesses make quotes wider. So the more you send, the tighter the price. Useful: shots from the roof or garden, shots from the room underneath, a rough width and length, the roof finish, any access problems, and the product page if you have already ordered. Add the property postcode around OX26 and we will come back with a quote or a survey date.

Common questions in Bicester

Do you cover Bicester?

Yes. Fitters travel to addresses in Bicester and the surrounding districts, including OX26. We do not run an office there; the survey and the fitting happen at your property. A few island and remote postcodes are covered by arrangement; if yours is one, we confirm travel and dates before quoting.

Can you fit a rooflight in winter or when it is raining?

Yes, within limits. Cold is less of a problem than wet, because membranes, primers and sealants need a dry surface to bond. We plan fitting days around the forecast and may move a date if heavy rain is due. If the roof has to be opened up, it is not left overnight without a temporary weather seal, so the room below stays dry while the work is finished.

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.

Send a few photos and your OX26 postcode, and we will put together a written quote for the job.

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

Upstands & kerbs in Bicester

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

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