Composite doors are one of the fastest-growing products on the home improvement market, and there’s a real demand for them across the country.
Although that doesn’t mean it’s easy for installers to choose the right supplier. To do so, it’s important to consider lead times, profiles used and the accreditations of any prospective company.
At Boston Trade Frames, we supply high-quality, ready-to-fit composite doors directly to installers across Lincolnshire.
We manufacture these doors bespoke to your client’s needs, with lead times typically around two weeks. Materials are sourced from leading suppliers including DoorCo, Solidor and Distinction, with a variety of core options, colours and hardware for any homeowner to choose from.
Free quotes are available from our Certass-certified, family-run business.
Supply only composite doors: Why partner with Boston Trade Frames?
We’ve been manufacturing and supplying windows and doors since 1981, so we know what trade customers need, speed, accuracy, competitive pricing and a team that actually picks up the phone. Here’s what you can expect when you work with us.
Doors ready within 2-4 weeks
We aim to have supply-only orders ready for our trade customers within 2-4 weeks of order confirmation. Whether you’re fitting a single front composite door or multiple external doors across a new build development, we work to get your products to you quickly, manufactured to your exact specifications.
Free quotes, fast
Getting a price from us is simple. Contact our team directly, and we’ll provide a clear, no-obligation quote tailored to your project. You’re welcome to ring us on 01205 311144, fill out our contact form or drop us an email at nigel@bostontradeframes.co.uk.
Market-leading materials and profiles
We manufacture using profiles and products from some of the most respected names in the industry, including Kömmerling, Solidor and Comp Door.

Flexible constructions to suit every client
Whether your client wants the weight and solidity of a solid timber core door or the outstanding thermal efficiency of a high-density foam core, we offer a wide range of constructions to suit every brief. The options are extensive, and they include:
- Colour options: Mocha, peacock blue, rosewood, twilight grey, white, painswick, red, schwarzbraun, walnut and more
- Hardware options: Bull ring knockers, Victorian urn knockers, ergonomic handles, Balmoral inline levers, architectural handles and more
- Glazing: Decorative glazing, glass designs and double glazing options across our ranges
- Composite door styles: From classic traditional designs to clean contemporary finishes
Whatever your client’s brief, we’ll have the matching specification.
Certass certified
We’re proud to be Certass certified installers. This accreditation reflects our compliance with current UK building regulations, giving both you and your end clients genuine peace of mind that the products you’re fitting not only meet, but most often exceed the standards expected.
A family business that values long-term relationships
Boston Trade Frames remains a family-run business. Our founder Nigel started out as a joiner in 1981 and has spent over four decades developing a deep understanding of the industry. We’ve started off on the tools ourselves, so we have a real understanding of what makes your life easier.

What about the doors themselves?
We offer composite doors from three of the most trusted names in the market. Here’s a quick overview to help you match the right product to your clients’ needs.
Solidor composite doors
Solidor is one of the most recognised names in composite doors, and for good reason. Built around a 48mm solid hardwood timber core, roughly 10% thicker than the standard composite slab, Solidor doors carry that satisfying weight and solidity that homeowners love.
The outer frame is wrapped in durable ABS thermoplastic skins, and the range offers over 25 colour options with dual-colour inner and outer flexibility. Compatible with Ultion 3-Star security cylinders and a range of smart lock systems, Solidor is a proven seller for trade customers who want to offer clients a premium, security-focused front door with a traditional feel.
DoorCo composite doors
DoorCo is the ideal option for clients who want something a little more contemporary. A high-density polyurethane foam core delivers outstanding thermal efficiency, comfortably exceeding current UK building regulations for U-values.
The outer skin is manufactured from GRP (glass reinforced plastic), available in both traditional woodgrain and smooth finishes that mimic the look of aluminium, a growing trend in the market.
DoorCo’s FLiP® glazing system is a particularly strong selling point; glass units can be swapped or replaced without damaging the door slab, making it a practical choice for installers. With over 50 colour options, DoorCo gives you an impressive range to present to clients.
Distinction doors
Distinction is the UK’s largest composite door slab supplier, with roughly 1 in 4 UK front doors coming from their production.
Their deep-profile GRP skin is moulded directly from real oak grain, producing one of the most convincing wood-effect finishes available. The high-density CFC-free PU foam core has been tested to be over 17% more thermally efficient than alternatives, and the sound insulation reduces outdoor noise by approximately 31dB.
With 36+ bespoke painted finishes and a rigid moisture-resistant polymer frame, Distinction is a smart option to recommend to clients prioritising weather resistance, easy maintenance and long-term performance.
These suppliers are all of the best quality, so will give your clients real trust. You can market their energy efficiency, leading to lower energy bills, durability and strength. All available in a beautiful range of high quality finishes.
Why trust Boston Trade Frames?
With over 45 years of experience behind us, we’ve built our reputation on quality doors, fair pricing and excellent customer service. We manufacture meticulously, we communicate clearly and we stand behind every product that leaves our site on Nursery Road Industrial Estate in Boston, Lincolnshire.
For trade professionals, we offer:
- Fast lead times of 2-4 weeks on supply-only orders
- Competitive pricing with no hidden extras
- A diverse array of colours, hardware and glazing options across all composite door ranges
- Certass-accredited products built to current UK building regulations
- A knowledgeable, friendly team with real manufacturing expertise
Solidor, DoorCo and Distinction are all proven sellers in the residential market, and we can supply all three, manufactured to your clients’ exact specifications, ready for you to fit.
Ready to discuss your next project? Get in touch with our team today for a free, no-obligation quote. Whether you’re fitting one door or planning a full development, we’d love to hear from you.
01205 311144
Nursery Road Industrial Estate, Boston, PE21 7TN
FAQs
What does supply only composite doors mean?
We manufacture and deliver your new composite door, you handle the fitting.
Can I get made-to-measure composite doors as supply only?
Absolutely. Every door we supply is manufactured to your exact specifications, including door colour, security features, internal colour, side panels and door hardware, making it the perfect composite for any project.
Do supply-only composite doors come with a warranty?
Yes. All our doors are manufactured to the highest standards using a quality combination of materials, and are covered by a manufacturer’s warranty, giving you and your clients complete peace of mind.


