uPVC vs Aluminium Windows — 2025 Buyer Guide for Hertfordshire & Essex
From Georgian cottages to glass-box extensions, frame choice shapes everything. TL;DR (Key Points) 1 · Quick comparison Feature Modern uPVC Thermally-broken aluminium Whole-window U-value 1.2 W/m²K 1.4 → 1.0 W/m²K (high-spec) Installed cost (casement) £330 £490 Frame depth 70–85 mm 55–75 mm (slimmer) Expected lifespan 25–30 yrs 40+ yrs Recyclability Medium 95 % 2 · … Read more