For installers, builders and contractors, success hinges on one factor above all others: reliability.
A breakdown in the supply chain – a late delivery, a mismatched specification, or a product that fails to meet compliance – can immediately derail a project’s timeline and budget. This is why a dependable double glazing supply partner is not just a convenience; it is a critical asset.
At Boston Trade Frames, we understand the demands of the trade. Since 1981, our focus has been on removing the friction points that cost you time and money, ensuring every order is delivered on time, certified and manufactured to the most exacting standards.
Reliability is the bedrock of project management
The procurement of high-performance windows and doors should be straightforward. When dealing with replacement uPVC windows or a large-scale new build, missed deadlines create immediate problems down the line, affecting subsequent trades and damaging client relationships.
We commit to fast lead times, delivering your orders typically within 2-4 weeks.
This predictability allows you to confidently schedule installations, manage site logistics effectively, and provide your clients with the peace of mind they expect.
Our dedicated customer service team is here to support you every step of the way.

How do fast lead times affect project profitability?
Consistent 2-4 week turnaround dramatically reduces non-productive site time and the risk of costly scheduling conflicts. By having components ready when you need them, you maintain momentum, complete projects quicker, and move onto the next job sooner, ensuring maximum efficiency and helping to maintain low prices for your clients.
Guaranteed quality and compliance, every time
The standards for modern glazing are continually being updated. To protect your reputation, every product you install must meet the appropriate standards and comply with the latest building regulations.
As a manufacturer of Kömmerling systems, we offer excellent quality uPVC window and door profiles designed for superior thermal performance and security.
For instance, our systems feature a 5-chambered design for maximum heat insulation, achieving highly competitive U-values of 1.2 as standard. This focus on energy efficiency ensures you are always installing future-proof products.
Our commitment to compliance means:
- All products are rigorously tested and certified
- We offer advanced options like triple glazing for maximum noise reduction and thermal performance.
- Every uPVC window frame features robust construction for long-term window security.
A complete product portfolio for every specification
Your clients will always have their own taste and specific needs, requiring a supplier that can deliver flexibility and a perfect fit.
Our range of uPVC windows and doors is comprehensive, ensuring you have access to the right product, whether the project demands traditional aesthetics or modern simplicity.
Our manufactured range includes:
- Casement windows and contemporary flush casement windows.
- Period styles such as bay windows and sash windows.
- A stunning selection of new doors, including Solidor and Comp Door composite doors.
- Large-format patio doors, French doors, and bifold doors.
We offer a variety of frame colours and finishes, allowing you to match any architectural style while providing the exceptional performance of modern double glazing.

Product diversity and logistical reach
Beyond standard white, we offer the sought-after contemporary finishes that clients demand, such as sleek Anthracite grey and classic Chartwell green. Crucially, our commitment to the trade extends geographically; we provide wide delivery across the UK, ensuring reliable site drop-offs no matter your location.
To back up our claims of excellent quality, we encourage prospective partners to examine independent customer reviews and verify our products’ exceptional performance against industry standards for energy ratings, providing a complete picture of our reliability and expertise.
Double glazing supply: Your dependable trade partner
Choosing Boston Trade Frames means partnering with a family-run business that puts trade professionals first. We combine competitive pricing with deep industry knowledge and manufacturing expertise. You gain exceptional value without compromising on product integrity.
Contact our knowledgeable team today for a quote or to discuss your next project. We provide a comprehensive guarantee on our products, backed by decades of experience, ensuring you receive the superior service and consistent double glazing supply that your business deserves.
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