A dual colour frame is powder coated in two passes: one RAL colour on the external face, a different one inside. Anthracite grey outside with white or light grey inside is the most-ordered combination in the UK, and it typically adds around 5–10% to the frame cost.
Dark windows look right on the outside of most UK houses. Dark windows on the inside make a room feel smaller and eat light — particularly in a north-facing room with a deep reveal. Dual colour resolves the argument instead of losing it.
The thermal break makes this physically possible: the inner and outer sections of the frame are separate extrusions bonded to a polyamide strip, so they can genuinely be different colours rather than one colour painted over.
Typically 5–10% on the frame cost. The frame is coated twice, so there is an extra pass through the coating line, but the material and installation cost are unchanged.
Effectively yes. In practice the vast majority of orders are a dark exterior with a white or light grey interior.
Anthracite grey (RAL 7016) aluminium windows fitted UK-wide — the UK's most popular window colour. Matt o…
Black aluminium windows (RAL 9005) fitted across the UK. Matt or gloss, the Crittall look, thermally brok…
Every RAL colour, matt or satin, single or dual colour. Anthracite grey (RAL 7016) and black are the UK's…
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