Bi-fold Door Installation

A semi-detached property in Woodford Green had recently completed a rear extension to create an open-plan kitchen and living area. The existing patio doors failed to make the most of the garden views and restricted the flow between the interior and outdoor space. The owners wanted a bold, contemporary solution that would open the whole wall to the garden and add a striking focal point to the new extension. The goal was to install a black aluminium bi-fold door to maximise natural light, provide effortless garden access, and complement the property’s modern refurbishment.

Our Solution

We supplied and installed a premium black aluminium bi-fold door system tailored to the extension opening. The solution included:

• Multi-panel aluminium bi-fold door with ultra-slim profiles for uninterrupted garden views
• Matt black powder-coated finish (RAL 9005) for a bold, contemporary statement
• Bottom-mounted stainless steel rollers for smooth, quiet folding operation
• Thermally broken profiles to eliminate cold bridging and prevent condensation
• Double-glazed units with low-E coating and argon gas fill for improved thermal efficiency
• Toughened safety glass throughout
• Multi-point locking system with high-security handles
• Low-threshold track for step-free garden access
• Concealed drop-down weather seals for superior draught protection
• Matching black handles and hardware for a unified finish

Installation Process

• Carried out a detailed site survey with precision laser measurements of the extension opening
• Confirmed panel configuration, colour, and hardware with the owners
• Coordinated with the extension build schedule to ensure correct sequencing
• Removed any temporary doors or boarding and prepared the opening
• Checked structural lintel and floor levels for correct alignment
• Installed steel reinforcement where required to support the bi-fold system
• Lifted the black aluminium bi-fold frame into position using precision packers and laser levels
• Mechanically fixed the frame to the new masonry and timber studwork, ensuring zero movement
• Hung each door panel and adjusted bottom rollers for perfect alignment and smooth folding
• Fitted double-glazed sealed units into all panels
• Installed and tested the multi-point locking system
• Spray-foamed perimeter gaps with high-expansion insulation foam
• Applied internal and external silicone seals for an airtight, watertight finish
• Tested folding operation across all panels multiple times
• Completed thorough clean of glass, tracks, frames, and surrounding areas
• Conducted a final walkthrough with the owners to confirm satisfaction