Completed Glazing Projects

1. Victorian Sash Window Replacement | Croydon Conservation Area

Location: Croydon, Greater London | Property Archetype: Victorian Mid-Terrace Villa

Project Challenge: The homeowner owned a substantial Victorian terrace property in a designated conservation area. The original timber box sashes were single-glazed, badly rattled in high winds, allowed cold draughts throughout winter, and let in street traffic noise from the nearby bus corridor. Croydon planning officers required replacement frames to maintain authentic proportions and sightlines under conservation guidelines.

Technical Solution: We supplied and installed 8 premium sliding sash timber-alternative uPVC windows. The frames incorporated mechanically jointed 90-degree outer corners, authentic 35 mm slim meeting rails, deep bottom rails, and continuous run-through sash horns. Glazed with 24 mm argon-filled low-E sealed units (4-16-4 build-up), the new windows precisely matched original box sash dimensions.

Verified Outcome: Preserved Victorian exterior streetscape aesthetics while reducing heat loss to a whole-window Uw of 1.3 W/m2K. Measured internal noise reduction achieved a 60 percent drop in road traffic sound (34 dB attenuation), and draughts were eliminated entirely. Read our dedicated sliding sash windows guide and explore our conservation area window guidance.

2. Slimline Aluminium Bifold Doors | Bromley Residential Extension

Location: Bromley, Kent Border | Property Archetype: Open-Plan Kitchen-Diner Extension

Project Challenge: The homeowner constructed a large rear ground-floor kitchen extension and required a wide-span door system spanning a 4,200 mm structural opening. The design demanded a seamless transition between internal kitchen flooring and outside stone patio paving, while maintaining strict weather tightness against prevailing southern driving rain.

Technical Solution: We delivered an installation-only service to fit a 4-panel slimline aluminium bifold door system in Anthracite Grey (RAL 7016). Our teams set an engineered low threshold compliant with Approved Document M, incorporating concealed external linear Aco drainage channels. Each door leaf was toe-and-heeled using calibrated glazing packers, and outer tracks were laser-levelled to within 1 mm across the full 4.2 metre span.

Verified Outcome: Delivered a 90 percent clear opening aperture with finger-light roller operation. The thermal break profile and argon-filled toughened safety glass achieved a whole-door Ud value of 1.4 W/m2K, meeting Approved Document L and PAS 24 security standards. Learn more about aperture requirements in our aluminium bifold doors guide and review our Part M door thresholds guide.

3. A-Rated uPVC Casements and Solid Core Composite Door | Sutton

Location: Sutton, Surrey | Property Archetype: 1930s Semi-Detached Family Residence

Project Challenge: The existing property retained original single-glazed metal crittall windows housed inside rotting timber sub-frames. The ground-floor front featured a 5-segment structural curved bay window carrying the second-floor bedroom bay and tiled roof. Severe condensation caused internal black mould along cills, while the timber front door offered weak security protection.

Technical Solution: Provided a complete supply and installation service replacing 10 window openings with multi-chamber A-rated uPVC casements. We supported the upper bay using Acrow props before removing old frames, then inserted heavy-duty structural bay jacking posts to transfer load through to the substructure under Approved Document A. We installed a 48 mm solid timber core composite front entrance door with TS007 3-star anti-snap lock cylinder and multi-point hook locks.

Verified Outcome: Eliminated frame condensation, reduced heat loss to whole-window Uw 1.2 W/m2K, and significantly decreased winter energy bills. The composite door achieved Secured by Design standards and PAS 24 certification. Explore our Sutton window installation services, review our composite entrance doors, and read our uPVC casement windows specifications.

4. Commercial Shopfront and Acoustic Glazing | South London Corridor

Location: South London / Mitcham Commercial District | Property Archetype: Ground-Floor Retail Unit with First-Floor Residential Flats

Project Challenge: A busy retail unit situated on a four-lane red route arterial road needed a modern ground-floor commercial frontage with automated closers and barrier-free access. Heavy diesel bus and lorry traffic generated continuous low-frequency rumbling noise that disrupted first-floor tenant flats above the premises.

Technical Solution: As glazing subcontractors, we erected heavy-duty thermally broken aluminium commercial framing screens with high-traffic pivot entrance doors. Glazed with 6.8 mm acoustic laminated glass with an asymmetric 4 mm inner float pane, the facade disrupted acoustic resonance frequencies. Entrance doors featured heavy-duty overhead concealed transom closers, emergency panic release hardware, and a low rebated threshold under 15 mm.

Verified Outcome: Attenuated street traffic noise by 40 dB under Approved Document E, creating quiet residential interiors upstairs. The entrance doors provided step-free accessibility compliant with the Equality Act and Approved Document M. Read our commercial glazing contracting services and consult our B2B commercial subcontracting guide.