Granada Secondary Glazing
Supplying both homeowners and commercial architects, trade partners and developers, its products are used in everything from domestic sash windows to listed hotels and hospitals.
Its portfolio includes vertical sliding sash units, horizontal sliders, hinged, lift‑out, fixed and fully bespoke shapes including curved and arched windows.
Manufactured in a proprietary aluminium production line with in‑house arching and powder‑coating capability, enabling fast lead times and quality control.
Typical projects include heritage renovations, commercial premises, hotel refurbishments and modern homes where window replacement is impractical.
Strong ties with architects and trade installers underpin both bespoke commercial installations and wide consumer reach.
Despite its size, it remains focused on engineered precision, seamless installation and high‑performance glazing solutions.
The UK's largest bespoke secondary glazing manufacturer
Handcrafted, slimline and discreet secondary glazing designed for listed building windows
Unparalleled expertise and commitment to delivering top
tier products for thermal, acoustic, and safety performance
Full advisory service with trained, accredited local installers
Provided secondary glazing with Low‑E glass achieving U‑values as low as approx 1.9 W/m²K in hospital projects
Installation of 6 mm toughened Low‑E glass reflecting heat back into interiors, reducing heat loss significantly in heritage buildings
Thermal improvements in historic buildings (e.g. Paper Hall) lowering energy consumption via secondary glazing reducing U‑values from around 5.7 W/m²K to approx 1.87 W/m²K
Contributed to projects aiming for Net Zero Carbon District by 2040 through secondary glazing installations improving thermal efficiency (e.g. Thirsk Methodist Church)
