The process of transforming raw materials into retrofit secondary glazing involves several precise stages that ensure the final product meets both functional and aesthetic requirements. Secondary glazing is a popular solution for improving thermal insulation, soundproofing, and security without replacing existing windows. The fabrication begins with the careful selection of raw materials, typically aluminum or uPVC profiles due to their durability, ease of maintenance, and cost-effectiveness. These materials are chosen based on the specific needs of the project as well as environmental considerations.

Once the raw materials arrive at the manufacturing facility, they undergo initial preparation which includes cutting to size using automated saws or CNC machines. This step requires accuracy because even minor deviations can affect the fit and performance of the finished units. After cutting, profiles may be shaped or routed to accommodate hardware fittings such as locking mechanisms or hinges necessary for opening sashes secondary glazing in london systems.

Following shaping, surface treatment is applied to enhance resistance against corrosion and wear. For aluminum profiles, this often involves anodizing or powder coating processes that not only protect but also provide an attractive finish available in various colors. In contrast, uPVC sections might be co-extruded with colored layers or laminated with decorative foils depending on design preferences.

Hardware installation marks another critical phase where handles, locks, stays, and brush seals are fitted onto prepared frames. These components contribute significantly to functionality by ensuring ease of operation while maintaining airtightness essential for energy efficiency improvement. Each fitting must align perfectly within pre-cut slots created during earlier machining steps.

Assembly then brings together all individual parts into complete window units ready for inspection and quality control checks. During this stage, glass panels-usually double-glazed units tailored for thickness compatibility-are carefully inserted into frame rebates sealed with gaskets or silicone adhesives to prevent air leakage and water ingress.

Final inspection verifies dimensional accuracy alongside mechanical performance tests such as opening/closing cycles and lock engagement reliability before packaging occurs. Proper labeling ensures traceability throughout logistics channels until delivery at installation sites where retrofit secondary glazing enhances existing window structures without intrusive modifications.

This entire fabrication workflow emphasizes precision engineering paired with material science expertise aimed at producing reliable retrofit secondary glazing solutions that extend building lifespan while improving comfort levels sustainably over time.

City Sound Secondary Glazing
367 Chingford Rd, London E17 5AE UK
44 20 8523 3210