Our Distinction GRP (Glass-Reinforced Plastic) composite doors offer enhanced security thanks to their rigid polymer sub-frame, high density insulated core, and high impact resistant GRP skin.

As standard, our doors come fitted with a 4-hook composite door bolt which is tested to high security standards. These locks have four opposing hooks and a deadbolt throw for maximum security. Although highly secure, our locks ensure a smooth and robust operation of the doors.  

At Sapphire Windows, we do not compromise on our composite door’s security. By using the ULTION 3-star security rating & Sold Secure Diamond accredited cylinder, we have ultimate confidence in the security of our doors. Our ULTION cylinders come with a £1,000 burglary guarantee.