Supplying windows, doors, garage doors, building plastics and trade essentials with the backing of over four decades of industry experience.
Your Full Turnkey Solution
Backed by decades of industry experience through our parent company Capital Garage Doors (est. 1978) and our specialist sister brand Sparesmaster, Capital Building Plastics is your dedicated trade supplier of high-quality building plastics, doors, windows, and essential consumables.
With a well-established distribution network, on-site warehousing, and strong trade relationships, we supply installers, builders, and developers across the South East of England with the products they need — when they need them.
Your Partner In Quality Since 1978
Operating since 1978, Capital Group has built strong partnerships with some of the industry’s most trusted and respected manufacturers.
In 2024, Capital Group launched Capital Building Plastics to expand our support for the trade — supplying soffits, trims, fascia boards, cladding, and everyday consumables to complement our established Garage Door range.
We are proud to be the exclusive distributor of Camden windows and doors in the South of England — a brand with over 40 years of experience and a reputation for sustainable, high-performance products. Manufactured in-house using up to 80% recycled plastic and glass, Camden’s range is one of the most environmentally responsible on the market — and every product is backed by a 15-year guarantee for total peace of mind.
Building Plastics For The Trade
- High-Quality
- Low-Maintenance
- Built to Last
At Capital Building Plastics, we stock a comprehensive selection of UPVC building plastics designed for longevity, durability, and ease of installation.
Fascias & Soffits
Cladding & Trims
Gutters & Downpipes
Sealants & Fixings
All products are low-maintenance, weather-resistant, and sourced from trusted UK manufacturers. Available in a variety of colours and finishes, our materials suit all property styles — from traditional homes to modern developments.
Whether you need supply-only or supply and fit, our experienced team provides free surveys, expert advice, and dedicated trade support to help you deliver every project with confidence.
Exclusive Camden Partner
Sustainable Innovation. Proven Performance.
As the exclusive distributor of Camden windows and doors across the South of England, we are proud to offer a product range that combines sustainability, performance and long-term reliability. Camden’s unique manufacturing process gives trade customers access to high-quality window and door systems produced with a strong commitment to environmental responsibility, without compromising on quality, aesthetics or efficiency.
7 Day Manufacturing
Using Camden’s own in-house recycling, extrusion and fabricating plants.
15 Years Guarantee
For all Camden doors, window frames and glass, manufactured to a high market leading specification.
80% Recycled uPVC
All Camden frames are manufactured from on-site recycled uPVC
40 Years in Business
Market leader with experience and expertise in uPVC windows and doors production.
Capital Building Plastics
Your trusted trade supplier for quality, reliability, and service — built on over four decades of industry expertise.
Our Product Range
Building plastics, doors, windows, roofline, tools and consumables — everything the trade needs.
Our Services
Expert advice, reliable delivery and dedicated trade support on every project.
Find Us
Visit our Crawley trade counter
or Upminster sales & distribution
site.