Description
Agate Grey uPVC Windows – Colchester Design is suitable for projects where the window must look good and perform well. Choose the Colchester Design when you need an Agate Grey uPVC window that looks clean from the outside and performs efficiently from the inside.
Patented high-performance double-action bubble gaskets help maintain tight weather seals, reducing draughts and supporting reliable everyday comfort. Warmth and efficiency are built into the product through 28mm-style sealed unit performance, argon filling, black warm edge spacers and a 1.3 W/m²K U-value.
Security is covered by a multipoint locking system, a lockable push-button handle and internal beading designed to keep the glass secured from inside the property. The 70mm multi-chamber uPVC frame is thermally efficient, fully sculptured and designed to give the Agate Grey finish a smooth, premium appearance.
- Fully compliant with Part L Building Regulations
- 10-year profile guarantee for long-term confidence
- A-rated window energy performance with a low 1.3 W/m²K U-value
- Multipoint locking system for secure everyday use
- Lockable push-button window handle included as part of the hardware package
- Argon-filled sealed units with black warm edge superspacer bars between the glass units
- Patented high-performance double-action bubble gaskets to maintain tight weather seals
- 70mm thermally efficient multi-chamber uPVC frame
- Internally beaded construction for maximum security
- Fully sculptured energy-efficient uPVC profile in Agate Grey
It is fully compliant with Part L Building Regulations and is backed by a 10-year profile guarantee, making it a practical choice for long-term replacement work. This gives the Colchester Design a clear specification for customers who want Agate Grey uPVC windows with dependable performance, secure hardware and a low-maintenance finish.








