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RooflightInstallers.co.uk
Guildford · GU1 · Surrey

Rooflight glass replacement in Guildford

Glass replacement is a two-visit job. On the first, the fitter checks the frame, the gaskets and the drainage, and measures the existing unit exactly, including its thickness and glass type. That visit is charged and priced before booking. Once the new sealed unit has been made, the second visit takes the old glass out, cleans and checks the rebate, and beds the new unit in. We do this for rooflight glass units in Guildford.

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

Guildford 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 Guildford

Distance is rarely the deciding factor. A roof in Godalming, 4 miles from Guildford, gets the same survey, the same written quote and the same fitting process as one in GU1, GU2 and GU4. What changes the price is the job itself: size of unit, roof type, access and lifting. Woking, around 6 miles out, is treated the same way.

On the day, we cover

  • Frame rebate cleaned and checked for damage, corrosion or failed seals
  • New glazing tapes, gaskets or sealant fitted to suit the frame
  • New unit set on packers, then beaded, capped or bonded as designed
  • Can the glass come out? — We check whether your rooflight has removable glass or a bonded unit before booking a fitting visit.
  • Matching the glass make-up — We identify the existing glass so the replacement performs at least as well.

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, building control and Guildford

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.

What to send us

Photos of the problem glass from inside and out, a rough width and length, and whether the rooflight opens or is fixed are enough to price the first visit. Add the postcode and how the roof is reached, and tell us if more than one unit has misted.

Common questions in Guildford

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 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.

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.

For a repair in Guildford, start with photos and the postcode; we confirm the visit price before anything is booked.

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

Glass replacement in Guildford

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

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