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RooflightInstallers.co.uk
Bangor · LL59 · Gwynedd & Anglesey

Rooflight glass replacement in Bangor

Before ordering new glass for a rooflight in Bangor, we need to know three things: the exact size and thickness of the existing unit, the glass type it needs to match or improve on, and whether the frame is still sound enough to keep. A charged measuring visit, priced before booking, answers all three. If the frame is fine, a new sealed unit is made and fitted on a second visit. If it is not, we price a full replacement instead.

Guide price from £445 · Supply & fit of the glass

What the job costs in Bangor

Small sealed unit

£445 – £795including VAT at 20%

Misted or cracked unit up to about 1 m² measured, made and refitted

Medium sealed unit

£795 – £1,295including VAT at 20%

Units up to about 2 m², or toughened and laminated

Large or specialist

£1,295 – £2,395including VAT at 20%

Triple glazed, solar-control or heavy units needing lifting gear

Guide ranges. The first visit is charged and priced before booking; any new glass is priced in writing before work starts. 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.

Coverage in and around Bangor

Fitters travel to the job, so the address is what counts. In Bangor that means postcode districts LL59, LL57 and LL58, and the same teams can just as easily take on work in Caernarfon, about 9 miles away, or Llandudno at roughly 14 miles. Survey and fitting dates are offered according to fitter availability, and travel is built into the quote rather than added later.

What the job includes

  • New glazing tapes, gaskets or sealant fitted to suit the frame
  • Frame rebate cleaned and checked for damage, corrosion or failed seals
  • New unit set on packers, then beaded, capped or bonded as designed
  • Condensation or a failed seal — We confirm whether the mist is inside the sealed unit or on the room-side surface.
  • Weight and lifting — We plan how a heavy pane gets onto the roof and into the frame.

How the glass is replaced

The second visit is the quick one. With the new unit made to size, the fitters take the old glass out, check the frame and drainage paths, and set the new glass on packers so it sits square and drains properly. Seals and cappings are renewed where needed, the area is cleared, and you are shown what was done.

Regulations for Bangor properties

Wales sets energy limits of 2.2 W/m²K for rooflights and 1.4 W/m²K for roof windows, and new rooflight openings generally need building regulations approval. Replacement units are controlled fittings; we are not registered with a competent person scheme, so ours are covered by a building notice to the council. Planning permission is needed for rooflights in conservation areas, National Parks, AONBs and World Heritage Sites. We check which applies and include the fee in your quote.

What to send us

To price the measuring visit, send a photo of the rooflight from inside showing the misting or crack, one from outside if you can reach a safe viewpoint, and the rough size of the glass. If you know the make or have the original paperwork, include that too, along with the postcode.

Common questions in Bangor

Is the measuring visit charged?

Yes. The first visit measures the existing glass and checks the frame, and it is charged. We confirm that price before you book. The fitting of the new glass is then priced in writing, so you see the full cost before anything is ordered.

Can you replace just the glass in my rooflight?

Often, yes. If the frame, gaskets and drainage are sound, a new sealed unit can go into the existing frame. If the frame has failed, is distorted or leaks around the edge, replacing the whole rooflight is usually the better answer, and we tell you that.

How long does new rooflight glass take?

The new sealed unit is made to the measured size, so there is a gap between the measuring visit and the fitting visit while it is produced. We give you the expected timing when we price the glass, and book the fitting once it has arrived.

Send photos of the problem in Bangor and we will price the visit before you book it.

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

Glass replacement in Bangor

Send photos of the problem and we will tell you what a visit costs before booking.

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