French Windows cost in Portsmouth
French windows (outward-opening paired casements to floor level) cost around 50–70% more than a standard casement due to the larger glass area and threshold detail.
| Material | Glazing | Estimated price range |
|---|---|---|
| uPVC | Double | £950 – £2,400 |
| uPVC | Triple | £1,450 – £3,350 |
| Aluminium | Double | £1,750 – £4,200 |
| Timber | Double | £2,300 – £6,700 |
Prices are estimates derived from verified Portsmouth casement baseline data (source: Checkatrade (Apr 2025) + HomeOwners Alliance) with a french windows-specific multiplier applied. Fully-fitted supply and install including disposal and FENSA/Certass certification.
Portsmouth note: Conservation-area jobs in Southsea carry a premium; outer estates offer straightforward, lower-cost replacements.
Other window types in Portsmouth
Casement
Casement prices in Portsmouth.
Sash
Sash prices in Portsmouth.
Tilt & Turn
Tilt & Turn prices in Portsmouth.
Bay
Bay prices in Portsmouth.
Roof
Roof prices in Portsmouth.
Secondary
Secondary prices in Portsmouth.
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All windows in Portsmouth · Portsmouth installers · cost guides