Business Details
30 Years
experience
Trusted Windows, Doors & Conservatories in Chelmsford
Established in 1996, Abacus Windows is a family-run business based in Chelmsford, specialising in the manufacture and installation of high-quality PVCu windows, doors, and conservatories. Our commitment to excellence is demonstrated through our ISO 9001 certification, ensuring rigorous quality control standards across all products. We serve homeowners, trade customers, and commercial contractors, offering tailored solutions that transform home improvement ideas into reality. Our on-site fabrication process guarantees precision, energy efficiency, and timely delivery, with U-values as low as 1.4 for windows and 0.89 for doors.We prioritise security, with PAS24-compliant hardware and a ten-year performance guarantee on GRP skin doors. Clients can visit our factory to witness the manufacturing process firsthand, reinforcing our transparency and confidence in our workmanship. Our product range includes slimline aluminium bi-fold doors, composite doors with custom finishes, and conservatories designed for optimal thermal performance. With over 25 years of experience, we combine technical expertise with a client-centric approach, ensuring every project meets individual needs while maintaining competitive pricing and exceptional service standards.
Services
PVCu Windows
Composite Doors
Bi-Fold Doors
Conservatories
Patio Doors
Details
- Year established: 1996
Highlights and features
- We have over 25 years of experience in manufacturing energy-efficient windows and doors.
- Our ISO 9001 certification guarantees rigorous quality control standards.
- PAS24-compliant hardware ensures superior security for all door installations.
- Tailored solutions for homeowners, trade customers, and commercial projects.
- On-site fabrication guarantees precision, timely delivery, and competitive pricing.
Associations and certifications
- ISO 9001
What people say
Quality products
Professional service
Energy-efficient solutions
Reliable installations
Excellent customer support
Services
PVCu Windows
Our PVCu windows feature ISO 9001-certified WHS Halo profiles for energy efficiency and security. With U-values as low as 1.4, they include BBA-approved shootbolt locking systems and withstand winds up to 70mph. Available in casement, tilt-and-turn, and flush sash designs, they combine durability with modern aesthetics.
Composite Doors
PAS24-compliant composite doors offer enhanced security and thermal efficiency, with U-values from 0.89. Available in custom colours and designs, they feature SBD hardware and a ten-year performance guarantee. British-made for durability and style in residential and commercial settings.
Bi-Fold Doors
Slimline aluminium bi-fold doors provide thermal insulation (U-value 1.4) and 120kg leaf capacity. PAS24-ready with 3.6m single-span options, they maximise natural light through 120mm sightlines. Ideal for seamless indoor-outdoor transitions in modern properties.
Conservatories
Tailored PVCu conservatories create additional living space with double-glazed windows and energy-efficient designs. We handle planning, installation, and optional extras like underfloor heating. Available in various configurations to suit residential properties.
Patio Doors
Eloquence patio doors combine aesthetic appeal with security via 4-point hooklock systems. Available in 2, 3, or 4-pane configurations, they offer thermal insulation and sleek designs for residential properties. Customisable to match architectural styles.
Questions
What types of windows do you offer?
We provide PVCu windows in casement, tilt-and-turn, sash, and flush sash designs with energy-efficient U-values as low as 1.4.
Are your doors secure?
All doors meet PAS24 standards with SBD hardware, featuring shootbolts and key-locking options for enhanced security.
Do you install conservatories?
Yes, we design and install custom PVCu conservatories with double-glazed windows and optional extras like underfloor heating.
What areas do you serve?
We operate primarily in Chelmsford and surrounding areas of Essex, providing localised expertise and service.
Do you offer trade discounts?
Yes, we provide competitive trade discounts for volume orders and contractor partnerships.
What guarantees do you provide?
We offer a ten-year performance guarantee on GRP skin doors and ensure all products meet ISO 9001 quality standards.
