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Sash windows · Scotland

Triple glazed sash windows in Edinburgh and the Lothians

Triple glazed sash windows across Edinburgh and the Lothians: free survey, written fixed quote, and fitting by installation teams working for us. Towns we cover include Edinburgh, Livingston and Haddington.

6Towns with local pages
ScotlandRules applied
1.6U-value limit (W/m²K)
6 to 10 weeksTypical lead time
White vertical sliding sash windows on a Victorian London terrace

Honest advice on which sashes can take a full triple unit. A sash window has one or two sashes that slide up and down in a box frame.

Guide prices across Edinburgh and the Lothians

Small window

about 600 x 1000 mm (bathroom, landing)

£1,295 – £1,595inc VAT · £1,080 – £1,330 ex VAT

  • uPVC frame, triple glazed, warm-edge spacers
  • Removal and disposal of the old window
  • Fitted, sealed and made good inside and out
Typical size

Medium window

about 1200 x 1200 mm (bedroom)

£1,695 – £2,095inc VAT · £1,410 – £1,745 ex VAT

  • uPVC frame, triple glazed, warm-edge spacers
  • Removal and disposal of the old window
  • Fitted, sealed and made good inside and out

Large window

about 1800 x 1200 mm (lounge)

£2,595 – £3,195inc VAT · £2,160 – £2,660 ex VAT

  • uPVC frame, triple glazed, warm-edge spacers
  • Removal and disposal of the old window
  • Fitted, sealed and made good inside and out

Guide prices, supply and fit. The written quote after your survey fixes the price for the specification shown; anything extra is agreed with you first.

Towns in Edinburgh and the Lothians

Rules in Scotland

The rules for replacement windows in Scotland are set by the Building Standards Technical Handbook (Domestic), section 6: 1.6 W/m²K. Replacing a window or door, frame and all, does not need a building warrant, but the work must still meet the building standards.

Planning: Since May 2024, replacement windows on houses are widely permitted development, including in many conservation areas, with front elevations expected to match the existing closely; your council tells you if prior notification applies. Flats outside conservation areas generally need permission only if the opening size changes. Listed buildings need listed building consent.

How it works

You will know exactly what you are buying: the quote states the unit build-up, frame, finish, fitting work and how Building Regulations compliance is handled. On fitting day each opening is replaced and closed up before the team moves on.

  • Every opening measured, including escape and vent needs
  • Frames rated for the weight of triple glass
  • Old windows removed and taken away
  • Each opening closed up the same day

Questions

Will triple glazing make my sashes heavy to lift?

The balances are sized for the sash weight, so they should slide smoothly. Heavier sashes use stronger balances or weights.

Can I keep my original sash boxes?

Sometimes. A timber specialist can fit new sashes into sound original boxes, but the glass thickness is limited by the sash depth.

Are uPVC sashes allowed in conservation areas?

It depends on the council and any Article 4 direction. Timber is often expected on front elevations. Check before ordering.

Do you cover all of Edinburgh and the Lothians?

We arrange surveys and fitting across Edinburgh and the Lothians.

Do I need permission for triple glazed sash windows in Scotland?

In Scotland, replacement windows on houses are widely permitted development since May 2024, with front elevations expected to match closely; listed buildings need consent.

Sash windows in nearby areas of Scotland

Other products in Edinburgh and the Lothians

Sash windows across Edinburgh and the Lothians

Written quote fixed for the specification, after a free survey. No building warrant is needed for a straight replacement in Scotland; we fit to the building standards and give you a written handover pack.

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