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RooflightInstallers.co.uk
Windsor · SL4 · Berkshire

Roof access hatch installation in Windsor

Roof access hatch installation in Windsor comes down to what happens around the glass. A good unit sat on a poor upstand, or with the membrane or flashing cut short at the corners, will still let water in. We fit each roof access hatch to the maker's instructions for fixings, packers and sealant, for homes and businesses across Windsor and the rest of Berkshire. That covers supply and fit, fit-only for a unit you already own, and swapping out a tired one. Every job starts with a written quote, so the price and scope are clear before anyone climbs a ladder.

Guide price from £1,795 · Supply & fit

Guide prices in Windsor

Entry-level hatch

£1,795 – £2,995including VAT at 20%

Polycarbonate or entry-level hinged hatch on gas struts, fitted to a new or existing upstand

Glazed manual hatch

£3,095 – £4,695including VAT at 20%

Double-glazed hinged hatch on gas struts, upstand and weathering

Electric glazed hatch

£9,345 – £12,595including VAT at 20%

Push-button glazed hatch with rain sensor; electrician's connection quoted separately

Guide ranges for supply & fit. 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.

Where our fitters travel

Looking at a property near Windsor but not quite in it? We work across SL4, SL3 and SL1 and outwards to Slough, Egham and Staines. Give us the full postcode when you get in touch, because access, parking and the route for a large unit all depend on the exact street. Those details shape the quote for any job around Windsor.

Your roof access hatches or ours

If you have bought a roof access hatch yourself, we check four things before fitting. First, the delivery: open it, look for chips, cracks and bent frames, and report any damage to the seller straight away. Second, the size, measured against the builder's opening rather than the external frame. Third, the upstand height above the finished roof. Fourth, the maker's instructions, which set the fixings and sealing. Product warranty claims go to the seller and maker; our guarantee is for how it was fitted.

Included in the work

  • Electric hatches wired ready for the electrician's final connection, quoted separately
  • Locks, catches or handles checked from inside and out
  • Opening and upstand sized for a clear climb-through, not just daylight
  • Access hatch or smoke vent — We confirm the hatch is only for access and not part of a building's smoke ventilation.
  • Clear opening size — We check the hatch's clear opening rather than its outer size.

Fitting your roof access hatch, step by step

On the day, you need to be in at the start and at the end. In between, the fitters get on with it. They will want the room below cleared where possible, a parking spot if you have one, and somewhere to set the unit down safely. After checking the opening and the upstand or flashing, they fix a roof access hatch, seal it and finish the inside. Packaging and any old unit leave with them unless the quote says otherwise.

Regulations for Windsor properties

Replacing a rooflight in an English home is a controlled fitting: it has to be self-certified by a scheme-registered installer or notified to building control. We are not registered with a competent person scheme, so replacements we fit are notified with a building notice, and the new unit has to meet current energy limits. Adding a new one usually means a building regulations application, because joists or rafters are trimmed. On the planning side, most house rooflights are permitted development if they project 0.15 m or less; on a side slope the glass must be obscured and fixed unless the opening part is over 1.7 m above the floor.

Help us quote accurately

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 SL4 and we will come back with a quote or a survey date.

Common questions in Windsor

Do you cover Windsor?

Yes. Fitters travel to addresses in Windsor and the surrounding districts, including SL4. 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 replace an old dome without redoing the whole roof?

Usually, yes. If the existing kerb is sound, level and tall enough, a new unit can often sit on it with a fresh seal to the roof covering. If the kerb is rotten or too low, we rebuild it and patch the covering around it rather than stripping the whole roof. This is checked at the survey and included in the written quote, so you know the full scope first.

Do you need scaffolding to fit a rooflight?

Not always. Single-storey roofs can often be reached safely with ladders, a tower or edge protection. Higher roofs, steep pitches and large units usually need scaffold or a mobile platform, and heavy glass may need a crane. We assess access from your photos or at the survey, and any scaffold or lifting cost is shown as its own line on the written quote.

Tell us your postcode, SL4 or close by, and what you want fitted. We will reply with the next steps and a quote.

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

Access hatches in Windsor

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

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