Business Details
31 Years
experience
Premium Windows and Doors in Romford, Essex
Established in 1995, Crystal Windows has built a reputation as a trusted leader in home improvement solutions across the South East of England. With over 30 years of combined management experience, our team delivers high-quality windows, doors, and energy-efficient systems tailored to meet individual client needs. We combine cutting-edge technology with meticulous craftsmanship, ensuring every installation enhances security, aesthetics, and thermal performance.Our commitment to excellence is reflected in our 98% customer satisfaction rating, 140,000+ completed installations, and industry accreditations such as Fensa registration and Secured By Design approval. As a locally rooted business serving Essex, Kent, Hertfordshire, and London, we prioritise transparent communication, professional installation teams, and post-sales support to guarantee lasting value for homeowners.
Services
Casement Windows
Composite Doors
Bi-Fold Doors
Solar PV Installation
Insulation Services
Sliding Sash Windows
Garage Doors
Conservatory Roofing
Air Conditioning
Composite Decking
Details
- Year established: 1995
Highlights and features
- 30 years of specialist experience in double glazing and home improvements
- 100+ experienced installation professionals with industry certifications
- 98% customer satisfaction rating from 140,000+ completed installations
- Secured By Design accredited products for enhanced home security
- Fensa registered for compliance with building regulations
Associations and certifications
- Secured By Design
- Fensa
- BFRC Energy Rating
- BS EN ISO 9001:2000
- PAS 24
- BS 7412
- BS 6375
- BS 7950
- BS EN 12600:2002
- BS EN 1279
- BBA Accredited
- SBD Accredited
What people say
Excellent service
Polite and helpful
High quality product
Professional installation
Highly recommend
Services
Casement Windows
Our A+10 rated casement windows combine advanced security features with thermal efficiency. Manufactured to BS 7412 standards, they feature 28mm sealed units with argon gas, anti-bump locking systems, and reinforced frames. Available in multiple colours and finishes, these windows reduce energy bills while maintaining security. Installation includes compliance with Document L building regulations.
Composite Doors
BS 7950 certified composite doors with 6-point locking mechanisms and GRP weatherproof skins. Constructed with Kerto laminated timber cores for strength, these doors achieve U-values of 1.3 and meet PAS 24 security standards. Customisation options include decorative glass and ironmongery. Installation includes compliance with thermal performance regulations.
Bi-Fold Doors
Thermally broken bi-fold systems with 6-hook locking mechanisms and weather seals. Available in 70mm sightline profiles, these doors achieve U-values of 1.4 and meet Document L 2010 requirements. Includes low-threshold options for accessibility. Installation ensures structural integrity and weatherproofing compliance.
Solar PV Installation
MCS-certified solar panel installations with 25-year performance guarantees. Systems include inverters with PAM technology and 95%+ dust filtration. Available with battery storage integration. Complies with MCS-024 certification standards for domestic renewable energy systems.
Insulation Services
Cavity wall and loft insulation meeting Building Regulations Part L. Uses Knauf Earthwool and Kingspan Kooltherm materials with 40-year durability guarantees. Includes EPC assessment support and thermal bridging solutions. Installation complies with BS 5250 condensation control standards.
Questions
Do you offer guarantees on your installations?
All products carry a 10-year manufacturer's warranty. Installation work is guaranteed for 2 years under our Fensa compliance certification.
Can I see product samples before ordering?
Yes, our Romford showroom displays full product ranges. Sales representatives can also bring sample materials to your home.
Are your installers directly employed?
All installation teams are directly employed with company-issued uniforms and ID. Subcontractors are not used for critical installation work.
Do you handle local authority permissions?
We manage Fensa certification for window/door replacements. For structural changes, we provide technical drawings for your building control submissions.
What financing options are available?
We offer interest-free credit through Barclays Partner Finance for installations over £1,500. Terms available from 12-60 months subject to status.
How long do typical installations take?
Window replacements typically complete within 1 day per room. Full house installations take 3-5 working days depending on scale.
