Looking for double glazing in Londonderry? S&K Glazing has been installing across County Londonderry for over a decade. Double glazing remains the most cost-effective upgrade for any property. Two panes of glass separated by an argon-filled cavity dramatically reduce heat loss, cut energy bills by up to 35%, and slash external noise.
Double glazing remains the most cost-effective upgrade for any property. Two panes of glass separated by an argon-filled cavity dramatically reduce heat loss, cut energy bills by up to 35%, and slash external noise. S&K Glazing supplies and installs A-rated double glazed units in uPVC, aluminium, timber and steel frames across the UK.
Londonderry's 17th-century walled city, Georgian Bishop Street, and Victorian Waterside generate heritage-led glazing demand across BT47-BT48. Listed-building consents and timber sash restoration form the bulk of our work in this Northern Ireland walled city.
For window-replacement work in Londonderry, the property mix across Northern Ireland ranges from period stock through to modern new-build, so we specify the thermal solution per property — A++ rated double-glazed sealed units for standard upgrades (U-value 1.4 W/m²K), A-rated solar-control glazing for south-facing elevations, and triple-glazed argon-filled builds achieving 0.8 W/m²K for owners targeting near-Passivhaus performance. Most commonly we're working across BT47 and BT48 postcodes.
Our local surveyor measures every opening, discusses style and glass options, and provides a written fixed-price quote within 24 hours.
Units are made to measure at our Birmingham facility using Pilkington, Saint-Gobain or Guardian glass and FENSA-approved frames.
Our FENSA-registered fitters remove old frames, install new units, and finish with silicone sealing, internal beading and trim — usually in a single day per property.
Free survey, fixed-price quotes, no pressure sales. Call us, message on WhatsApp, or fill in the form — we typically respond within an hour during working days.
Local survey, fixed-price quote, no obligation.
