A-rated UPVC Window Replacement for Portsmouth homes
Professional upvc window replacement service across Portsmouth and the wider PO area. Fully guaranteed, locally based, and ready to help today.
When repair isn't worth it, replacement is. Across Portsmouth, the trigger is usually one of three things: the frame itself has gone (rotted, warped, or simply worn out after 25+ years), the energy efficiency is too poor to be worth keeping (single glazed Victorian terraces, or first-generation double glazed with broken seals), or the homeowner is upgrading the look — moving from older brown UPVC or 1990s plastic to modern flush sash, anthracite finish, or A+ rated units.
Restoration Glazing is FENSA-registered, which means every full window installation we carry out across Portsmouth is certified to UK Building Regulations and you receive a FENSA certificate (which you'll need to show when you sell your property). We supply and fit the full range — casement, tilt-and-turn, flush sash, sliding sash replicas for heritage homes, bay and bow, French casements — across every Portsmouth postcode (PO1 to PO6).
Most UPVC window replacements in Portsmouth cost between £350 and £800 per window depending on size, glass spec, frame finish and access. A whole-house replacement (typical 3-bed semi, 8 windows) is usually £3,000-£6,000. We provide a free survey and written fixed-price quote — no high-pressure sales, no "today only" pricing.
Why UPVC Window Replacement Matters in Portsmouth
UPVC window replacement in Portsmouth is one of the most effective home improvements you can make. Whether your existing windows are draughty, difficult to operate, or simply looking tired, new UPVC windows transform both the appearance and performance of your property. Across this historic naval city, from homes near the Spinnaker Tower to residential streets in Southsea and Fratton, we're helping homeowners upgrade to modern, energy-efficient glazing that keeps homes warmer in winter and cooler in summer. Portsmouth's island geography and constant exposure to sea air makes high-performance windows particularly beneficial, protecting your home from the elements while reducing your carbon footprint.
Energy Efficient
A-rated double and triple glazed units that dramatically reduce heat loss and lower your energy bills year-round.
Wide Style Range
Casement, tilt-and-turn, sliding sash, and bay windows in a variety of colours and woodgrain finishes.
Professional Installation
Fully qualified installers ensure every window is fitted to exacting standards with a comprehensive guarantee.
Our UPVC Window Replacement Process
Free Consultation
We visit your home, discuss your requirements, and measure every window opening precisely.
Bespoke Quote
You receive a detailed, no-obligation quote covering all windows, glass options, and installation costs.
Expert Installation
Our experienced fitters remove your old windows and install your new UPVC frames with minimal disruption.
Final Inspection
We check every window for smooth operation, proper sealing, and a perfect finish before sign-off.
Areas We Cover in Portsmouth
We provide UPVC window replacement across every Portsmouth postcode and the surrounding areas, including:
- Old Portsmouth & Centre — Old Portsmouth, Spinnaker, Gunwharf Quays, Buckland, Landport
- Southsea — Southsea, Eastney, Milton, East Southsea
- North Portsmouth — Cosham, Drayton, Farlington, Hilsea, Paulsgrove
- East Portsmouth — Copnor, Baffins, North End
- Surrounding — Portchester, Wymering, Anchorage Park
Common UPVC Window Replacement Scenarios We See in Portsmouth
- •Failed first-generation UPVC across Cosham, Paulsgrove and Drayton — 1990s estates where original windows are reaching 30 years; usually multiple windows misted and frames discoloured at the same time
- •Heritage upgrades in Old Portsmouth and Southsea conservation areas — homeowners replacing original timber sash windows with high-quality timber-look UPVC sash replicas, often for energy efficiency and reduced maintenance
- •Coastal-exposed properties in Southsea, Eastney and along the seafront — earlier-than-average failure of older UPVC due to salt-air degradation, often requiring replacement at 20-25 years
- •Buy-to-let and HMO upgrades in Southsea student belt — landlords replacing tired single-glazed or worn UPVC for EPC compliance and tenant comfort
- •Aesthetic refurb across Cosham and Drayton — homeowners moving from older brown or white UPVC to modern anthracite, agate grey or black finishes for a contemporary look
Frequently Asked Questions — UPVC Window Replacement Portsmouth
How much do new UPVC windows cost in Portsmouth?
Most replacements are £350-£800 per window depending on size, glass spec, frame finish, and access. A whole-house replacement (typical 3-bed semi, 8 windows) is usually £3,000-£6,000. We provide a free survey and fixed-price quote.
How long does it take to replace windows in Portsmouth?
Survey and quote take about 30-45 minutes. Once you accept the quote, manufacturing takes 4-6 weeks for standard units. Installation is typically 1-2 days for a whole house, and one window can be replaced in under 2 hours.
Are you FENSA-approved for installations in Portsmouth?
Yes — Restoration Glazing is FENSA-registered. Every window installation we do meets UK Building Regulations and you receive a FENSA certificate (required when you sell your property). 10-year guarantee on workmanship, 5-year on sealed units.
Do you do conservation-area windows in Portsmouth?
Yes — we work in Portsmouth conservation areas (Old Portsmouth, parts of Southsea) and supply heritage-style UPVC sash replicas designed to satisfy local conservation officer requirements. We can liaise with planning if needed.
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