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Llanelli · SA15 · Dyfed

Rooflight glass replacement in Llanelli

Condensation between the panes, a crack from a dropped tool, or a unit that has gone cloudy are the usual reasons for rooflight glass replacement in Llanelli. Each needs the existing unit measured and the frame inspected before new glass is ordered, so we start with a charged measuring visit, priced before you book. You then get a written price for the new glass and fitting. Toughened, laminated and solar-control options are matched to what the frame can take.

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

Llanelli guide prices

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 Llanelli

Jobs across SA15, SA16 and SA14 are part of our normal cover for Llanelli. We are not an office on the high street. Our fitting teams come out to the property from wherever they are working that week. Neighbouring places such as Gorseinon and Swansea are covered on the same terms, so a house on the edge of town is no harder to book than one in the centre.

On the day, we cover

  • Joints water tested and the glass cleaned inside and out
  • New unit set on packers, then beaded, capped or bonded as designed
  • Old glass taken out safely and removed from site
  • Condition of the frame — We look at the frame closely before committing to new glass.
  • Can the glass come out? — We check whether your rooflight has removable glass or a bonded unit before booking a fitting visit.

How the glass is replaced

On the fitting visit, the room below is protected first. The beads or cappings come off, the old unit is lifted out with suction lifters, and the rebate is cleaned and checked for damage or blocked drainage. The new sealed unit goes in on fresh packers and gaskets, the cappings are refitted and sealed, and the glass is cleaned. Most glass swaps take half a day once the new glass is made.

Planning and building rules in Wales

Welsh rules differ from England's in one important way: rooflights lose permitted development rights in conservation areas, National Parks, AONBs and World Heritage Sites. Elsewhere on a house, a rooflight that projects no more than 150 mm and stays below the highest part of the roof is usually fine. Building regulations still apply to new openings, replacements we fit go through a building notice because we are not scheme-registered, and the energy limit for rooflights is 2.2 W/m²K. A new Welsh Approved Document L takes effect on 4 March 2027.

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 Llanelli

Can I upgrade the glass while it is being replaced?

Usually. Solar-control, self-cleaning, toughened or laminated glass can be specified as long as the frame can take the thickness and weight. We check that on the measuring visit and price the options side by side.

Is new glass or a new rooflight better value?

If the frame, gaskets and drainage are sound, new glass is usually the cheaper fix. If the frame is cracked, distorted or leaking at the kerb, a full replacement is better value. After the measuring visit we price both so you can compare.

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.

Send photos of the problem in Llanelli 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 Llanelli

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

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