Listed Building Sash Window Specialists

Bristol Sash Window Services helps Bishopston homeowners care for sash windows in listed and conservation properties. We use traditional, conservation-friendly methods to repair decay, restore smooth operation and discreetly improve comfort without changing the external look.

Conservation-approved techniques

• Timber splicing to rails, sills and glazing bars (remove only decay, splice in matched treated timber)
• Traditional putty glazing and tidy sightlines
• Cords & pulleys renewed; weights correctly balanced
• Discrete draught proofing with slim brush seals

Considering slimline double glazing?

In many Grade II properties, slimline double glazed sashes can be acceptable if sightlines match and external appearance is unchanged. We’ll assess suitability, prepare detail, and advise on consent if required.

• Made-to-measure replacement sashes (often Accoya®)
• Historic glazing bar profiles replicated
• Improved thermal and acoustic performance

Our process

1. Survey & report – condition of timber, glazing and moving parts; clear recommendations
2. Careful disassembly – safe access to pockets, weights and affected joinery
3. Joinery repairs – decay removed; like-for-like timber splices; traditional putty work
4. Operation & sealing – cords, pulleys and alignment set for smooth, tight closing
5. Optional upgrades – brush seals; slimline sash options where appropriate

We can supply documentation to support listed building consent where changes are proposed.

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