Business Details
31 Years
experience
Your Trusted Partner for Home Improvement Solutions
Crystal Windows has been a trusted name in the double glazing industry since 1995, serving London and the home counties with unwavering commitment to excellence. Specialising in high-quality windows and doors, we combine cutting-edge technology with skilled craftsmanship to deliver tailored solutions that meet unique client needs. With over 30 years of experience, 140,000+ installations completed, and a 98% customer satisfaction rating, our reputation for reliability and professionalism is built on continuous improvement and customer-centric service.Our management team, with decades of industry expertise, ensures every project adheres to rigorous quality standards while maintaining strong financial health. From initial consultation to after-sales support, we prioritise transparency, precision, and lasting value, making us one of the South Easts most respected home improvement providers.
Services
Casement Windows
Sliding Sash Windows
Bay Windows
uPVC Doors
Composite Doors
French Doors
Bi-Fold Doors
Garage Doors
Energy Saving Solutions
Insulation
Details
- Year established: 1995
Highlights and features
- 30 years of experience in double glazing and home improvements
- ISO 9001 certified for quality management systems
- Secured by Design accredited for enhanced security products
- 98% customer satisfaction rating from 140,000+ installations
- Expert installation teams with rigorous quality control processes
Associations and certifications
- ISO 9001
- FENSA
- Secured by Design
- BFRC
- PAS 24
What people say
Professional installation teams
Excellent aftercare service
High-quality products
Courteous and punctual staff
Tidy workmanship
Services
Casement Windows
Our UPVC casement windows combine style with functionality, featuring advanced locking systems for security and energy-efficient glass to reduce heat loss. Available in various colours and finishes, they enhance both modern and traditional properties while maintaining an A+10 energy rating. Professional installation ensures minimal disruption and long-term durability.
Composite Doors
Crystal composite doors feature a weather-resistant GRP outer skin and a 16-layer Kerto timber core for exceptional strength and thermal efficiency. Equipped with anti-bump, anti-pick 6-point locking systems, they offer superior security while requiring minimal maintenance. Customisable with various colours, glass designs, and fittings to match individual preferences.
Bi-Fold Doors
Our PVC-U bi-fold doors create seamless indoor-outdoor transitions with slim-line profiles and energy-efficient designs. Featuring robust locking systems and available in multiple colours, they provide both aesthetic appeal and security. Compliant with Building Regulations Part L, they enhance natural light while maintaining thermal performance.
Energy Saving Solutions
We offer solar PV installations and energy-saving products like A+ rated boilers and insulation. These solutions reduce energy bills and carbon footprints while maintaining comfort. Our systems incorporate advanced technology for efficiency, including environmentally friendly refrigerants and intelligent climate control features.
Insulation
Our insulation services include loft roll, spray foam, and cavity wall solutions designed to improve thermal efficiency. Properly installed insulation reduces energy consumption while enhancing comfort. All installations meet current building regulations, ensuring long-term performance and cost savings for residential properties.
Questions
Do you offer financing options for home improvements?
Yes, we provide credit facilities through a panel of lenders for qualifying customers, subject to status and affordability assessments.
What areas do you serve?
We operate across Essex, Kent, Hertfordshire, London, and Surrey with local installation teams available throughout these regions.
Are your products energy efficient?
All windows and doors meet or exceed Building Regulations Part L requirements, featuring A+ energy ratings and advanced thermal insulation properties.
What security features do your doors have?
Our composite and uPVC doors include anti-bump, anti-pick, and anti-drill locking systems with 6-point security mechanisms for enhanced protection.
How long does installation take?
Most window and door installations complete within 1-2 days, with larger projects like porches or driveways scheduled accordingly.
Do you provide guarantees?
We offer comprehensive guarantees covering both products and installation workmanship for customer peace of mind.
