Sash windows (UPVC & timber) in Cardiff
From £900
| Service | Typical price in Cardiff |
|---|---|
| UPVC double glazed windows | £396 - £792 |
| Sash windows (UPVC & timber) | £792 - £2,112 |
| French & patio doors | £1,144 - £2,816 |
| Bay & bow windows | £1,408 - £3,344 |
| Secondary glazing | £308 - £836 |
Sash window replacements for Cardiff’s Pontcanna, Roath Park and Cathays terraces
Cardiff’s sash market is defined by the Edwardian bay-fronted terrace — Pontcanna, Roath, Cathays and Grangetown all have long streets of nearly identical two-storey terraces with tall two-over-two sashes and stained-glass upper lights. In conservation streets, particularly Pontcanna and around Roath Park, replicating the original sash proportions and glazing bar patterns is essential. Legacy Windows is a quote comparison service that matches you with sash specialists across timber restoration, timber replacement and UPVC alternatives.
Why locals in Cardiff choose Legacy Windows
- Pontcanna and Roath Park conservation area expertise
- Timber restoration: splice repair, weight-cord replacement, brush-pile draught seals
- Slim double-glazed units (11-14mm) for conservation streets
- UPVC sash alternatives priced for non-conservation streets
- Stained-glass and leaded upper-light replication where original detail remains
Areas we cover around Cardiff
Sash work concentrates in CF11 (Pontcanna, Canton, Grangetown), CF24 (Cathays, Adamsdown, Roath), CF23 (Penylan, Roath Park), CF14 (Whitchurch, Llandaff North) and CF5 (Llandaff, Fairwater). Coverage also extends to Penarth, Cowbridge and Chepstow’s Georgian core.
Frequently asked questions
Do I need conservation area consent for a Pontcanna sash? For street-facing replacements, yes. Pontcanna’s Article 4 direction removes permitted development rights for windows, so any change needs Cardiff Council approval. Timber sash-and-case with slim double glazing is the typical approved specification.
Restore or replace on a Cathays Edwardian terrace? Draught-sealing a sound existing sash £340 to £520 per window (cuts heat loss around 40%). Full timber sash replacement with slim units £1,200 to £2,110. UPVC sash alternatives from £790 where the street allows.
Can original stained-glass upper lights be retained? Yes — most Cardiff panel installers offer to remove, restore and re-set original stained-glass or leaded upper lights into new lower sashes, keeping the terrace’s character intact. This is often the sensible middle path in Roath and Pontcanna.
Windows and doors in Cardiff - local context
Cardiff's signature bay-fronted Victorian terraces dominate Cathays, Roath and Grangetown, with detached Edwardian villas in Cyncoed and Lisvane, and modern apartments in the Bay redevelopment.
Dominant era of housing stock: Victorian and Edwardian bay-fronted terraces.
Heritage note: Around 27 conservation areas including Pontcanna, Roath Park and Cathays Park.
- Cathays
- Roath
- Pontcanna
- Penylan
- Cyncoed
Postcodes we cover in Cardiff
- CF10
- CF11
- CF14
- CF23
- CF24
Not seeing your postcode? Request a quote anyway - we likely still cover it.