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Premium Composite Doors for Security & Style
Established in 1996, Rockdoor has pioneered the composite door industry in the UK, combining cutting-edge technology with over 25 years of expertise to deliver unparalleled security and thermal efficiency. Our doors are engineered with a 360 aluminium reinforced inner frame and high-density polyurethane foam, offering 35% greater strength than standard GRP doors. We hold multiple accreditations including Secured by Design, Sold Secure Diamond Standard, and ISO 14001 certification, reflecting our commitment to quality and innovation.

Our S-Glaze technology permanently locks glass into the door structure, eliminating draughts and enhancing security. With 13 premium colours, 30 door styles, and over 100 glass designs, we provide bespoke solutions tailored to individual homes. Our nationwide network of Trusted Installers ensures expert fitting, while our 2,000 security guarantee underscores confidence in our products. As the original composite door manufacturer, we continue to lead the market through continuous innovation and rigorous quality control.
Services
Composite Doors Front Doors Back Doors Double Doors French Doors Stable Doors Door Customisation S-Glaze Technology Nationwide Installation
Details
  • Year established: 1996
Highlights and features
  • 25+ years pioneering composite door innovation
  • Patented S-Glaze technology eliminates glazing cassettes
  • Nationwide network of handpicked Trusted Installers
  • Steel mesh reinforcement option for ultimate security
  • A++ energy-rated doors with 35% greater strength than GRP
Associations and certifications
  • Secured by Design
  • Sold Secure Diamond Standard
  • ISO 14001
What people say
35% stronger than GRP A++ energy rating 13 colour options Nationwide installers S-Glaze technology
Services
Composite Doors
Our composite doors combine aluminium reinforcement, polyurethane foam, and steel mesh options to create 35% stronger doors than standard GRP alternatives. A-rated for thermal efficiency, they feature patented S-Glaze technology that locks glass permanently into the structure. Available in 30 styles and 13 colours, these doors provide unmatched security while maintaining energy efficiency for UK homes.
S-Glaze Technology
This patented system permanently bonds double-glazed units into door structures, eliminating draughts and preventing glass removal. Unlike traditional cassettes that fade, S-Glaze ensures lifelong security and thermal performance. The technology enhances weatherproofing while maintaining aesthetic flexibility through 100+ glass design options.
Door Customisation
Choose from 30 door styles, 13 premium colours including anthracite grey and chartwell green, and over 100 glass designs. Our 3D door designer allows visualisation of complete customisations, from traditional cottage styles to modern contemporary finishes, ensuring perfect integration with any property's aesthetic requirements.
Nationwide Installation
Our network of Trusted Installers provides expert fitting services across the UK. Each installer undergoes comprehensive training to ensure precise installation of made-to-measure doors. The service includes postcode-based installer matching and free no-obligation quotes for both front and back door replacements.
Security Accreditation
Holding Secured by Design, Sold Secure Diamond Standard, and ISO 14001 certifications, our doors meet police-backed security requirements. The 2,000 security guarantee covers forced entry protection, featuring multi-point hook locks with 25mm throw and TSOO7 3-star rated cylinders for comprehensive home protection.
Questions
What makes Rockdoor composite doors more secure?
Our doors feature 360° aluminium reinforcement, steel mesh options, and patented S-Glaze technology that locks glass permanently into the structure. These features create doors 35% stronger than standard GRP alternatives.
How energy efficient are Rockdoor products?
All doors achieve A++ energy ratings through high-density polyurethane foam cores and S-Glaze technology that eliminates draughts. This combination reduces heat loss by 35% compared to standard composite doors.
Can I customise my Rockdoor design?
Yes, choose from 30 door styles, 13 premium colours, and over 100 glass designs using our 3D door designer. Visualise complete customisations before installation to match your property's aesthetic requirements.
How does the nationwide installation process work?
Our network of Trusted Installers provides expert fitting services across the UK. After designing your door, enter your postcode to find local installers offering free no-obligation quotes for precise, professional fitting.
What security accreditations do Rockdoor hold?
We maintain Secured by Design (police-backed), Sold Secure Diamond Standard, and ISO 14001 certifications. Our doors include TSOO7 3-star rated cylinders and multi-point hook locks with 25mm throw.
What warranty and guarantees apply?
Our 2,000 security guarantee covers forced entry protection. Doors come with comprehensive warranties covering materials and workmanship, supported by our 25+ years of manufacturing expertise and nationwide service network.