Glazing
Roof windows and rooflights for a UK extension — stock Velux-style pivot windows versus bespoke large-format fixed aluminium rooflights, including lead times, fire-resistance rules, and who installs what.
Bespoke Aluminium Rooflights: The £10,000 Glass Box Above Your Kitchen
Complete UK guide to large-format bespoke aluminium rooflights: size-to-cost matrix, lead times, upstand construction, fire glass, and when to choose one over a Velux.
Pitched Roof Windows (Velux-style): Size Codes, Flashing Kits and the BFX Collar Detail That Stops Leaks
UK guide to Velux-style pitched roof windows: size codes (MK04, SK06), flashing kit selection (EDW, EDP, EDL), BFX/BDX installation detail, U-value rules, Part B escape, and realistic 2026 costs.