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New & Replacement Timber Sash and Case Windows in Scotland

New timber sash and case windows made for Scottish homes

We repair and restore original sash and case windows wherever that remains practical. When deterioration is too extensive, or the cost of reconstructing a failing window approaches the cost of replacement, a purpose-made new timber sash and case window can be the more sensible long-term solution.

New white timber sash and case window supplied and fitted for a customer in Saline, Fife
A new made-to-measure timber sash and case window supplied for a customer in Saline, Fife.

New and replacement sash and case windows in Scotland

Traditional timber windows can often be saved. Failed cords, loose putty, draughts, sticking sashes and localised rotten timber do not automatically justify replacement. Our starting point is therefore to consider repair or restoration first.

There is, however, a tipping point. If decay is widespread through the sashes and case, important structural sections have already been lost, previous alterations have left an unsuitable window, or the labour and new timber required to reconstruct what remains becomes disproportionate, a new purpose-made timber sash and case window may offer better long-term value.

Repair or replace: how we make the decision

Repair where practical

Sound original timber is valuable. Localised decay, cords, glazing, putty, ironmongery and draughts can often be addressed without replacing the complete window.

Restore when several elements need work

A full overhaul can combine joinery repairs, re-cording, easing, glazing repairs, draught proofing and finishing while retaining the existing window.

Replace when deterioration is extensive

Where the case and sashes require such extensive reconstruction that repair is no longer proportionate, we can supply a new timber window made for the opening.

Correct unsuitable replacements

A poorly proportioned or inappropriate previous replacement can sometimes be replaced with joinery that better reflects the building's traditional character.

What we look for in a new sash and case window

A successful replacement should not look like a generic modern window placed in an old opening. We consider the proportions of the existing elevation, pane arrangement, meeting rails, glazing bars or astragals, frame depth, mouldings, sash horns where appropriate, ironmongery and the relationship between the window and surrounding stonework.

Traditional vertical sliding operation can be retained using cords, pulleys and counterweights. Timber selection, joints, drainage, glazing and protective coatings are specified with future maintenance in mind.

Glazing options for new timber sash windows

Depending on the property and the required profiles, new windows can incorporate suitable high-performance glazing. In heritage situations the visual effect of glass thickness, spacer bars, reflections and glazing-bar dimensions needs careful consideration. Where the existing window is worth retaining, heritage slimline double glazing or secondary glazing may provide an alternative to complete replacement.

Listed buildings and conservation areas

Replacement is not automatically acceptable simply because a window is old or inefficient. Listed buildings and properties in conservation areas can be subject to additional controls, and a repair-led approach may be expected. Our listed building and conservation window guide explains the issues to consider. The relevant planning authority determines whether consent is required.

From survey to installation

  1. Condition assessment: we establish whether repair or restoration remains the proportionate option.
  2. Measured survey: the opening, reveals, masonry interfaces and important existing details are recorded.
  3. Joinery specification: pane pattern, profiles, timber, glazing, ironmongery and finish are agreed.
  4. Manufacture: the new window is made to suit the opening rather than relying on a standard-size unit.
  5. Installation: the window is fitted with attention to weathering, surrounding fabric and internal finishes.
  6. Adjustment and handover: operation, catches, seals and finishing details are checked.

Can funding help with replacement windows?

Funding rules vary and many schemes favour repair or specific energy-efficiency measures rather than wholesale replacement. Before assuming a grant applies, read our guide to sash window grants, loans and funding in Scotland and check the current rules of the relevant scheme. We can provide a quotation for the window work, but funding bodies make eligibility and award decisions.

Frequently asked questions

When is it cheaper to replace a sash window than repair it?

There is no reliable percentage that applies to every window. The tipping point depends on how much of the case and sashes remains sound, the complexity of the original details, the amount of new timber and labour required, glazing requirements and the historic significance of the window. We assess those factors before recommending replacement.

Do rotten sash windows always need replaced?

No. Localised decay can often be cut out and repaired with compatible timber. Replacement becomes more relevant when deterioration is widespread or the remaining window no longer provides a sound basis for proportionate repair.

Can new sash windows be double glazed?

Yes, subject to the required profiles, appearance and any planning or listed-building constraints. The glazing specification should be considered as part of the window design rather than added as an afterthought.

Can you match the pane pattern of the original window?

Usually, surviving windows and architectural evidence can guide the pane arrangement and proportions. The aim is for the new joinery to sit naturally within the elevation.

Do you supply new timber sash and case windows outside Stirling?

Yes. We undertake sash and case window work across Scotland, subject to the scale and location of the project.

Unsure whether to repair or replace?

We can inspect the existing windows and recommend repair, restoration or replacement according to their condition, character and long-term value.

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