French Casement.
uPVC Window System
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Nothing in the middle.
A French casement opens from both sides with no central mullion in the way. The “flying mullion” is built into one of the sashes , so when you throw them both open, you get a completely unobstructed opening, from cill to head, frame to frame. No vertical bar, no visual break.
That matters for two reasons. First, it satisfies Building Regulations Part B as a means of escape for habitable rooms on upper floors , which many standard casements struggle to do. Second, for garden‑facing rooms with a good view, it reads as a single sheet of glass rather than two.
Meets Part B. Looks like period.
Specified with monkey‑tail or pear‑drop handles and a deep cill, a French casement can replace a failed Victorian sash on a listed upper floor without looking like a compromise , and without falling foul of escape requirements.
Internally beaded, multi‑point shootbolt locking, hinge‑side security bolts. Secured by Design accredited as standard.
Specifications
Multi‑chambered uPVC platform with flying‑mullion detail integrated into one sash edge. Internally glazed with 28mm warm‑edge double or 36/40mm triple glazed units. A‑rated under the Windows Energy Rating scheme. Multi‑point shootbolt locking with mushroom‑head cams and hinge‑side security bolts. BS 6375 weather rated; certified to PAS 24 enhanced security.
Double‑sash configuration with flying mullion is standard. Egress versions meet Building Regs Part B minimum 0.33m² clear openable area. Handle options: standard lever, monkey tail, pear drop, espagnolette. Max overall width 1800mm, max sash width 900mm. Available with Georgian bars or leaded glass for conservation work.
Standard colour range: Black (RAL 9005), Anthracite Grey (RAL 7016), and White (RAL 9016). Bespoke finish: full RAL colour palette available on request, including textured, matte, satin, and dual-colour (different inside vs outside) options. Powder-coated to BS EN 12206-1 with 25-year colour-stability guarantee.
