When you’re investing in new windows for your home, the supplier you choose matters just as much as the windows themselves.

But with so many double glazing companies out there, how do you separate the established professionals from the fly-by-night operators?

Let’s walk through what really counts when selecting the right window supplier.

Why your choice of supplier matters

The right double glazing supplier isn’t just about getting the best price. It’s about finding a partner who’ll stand behind their products for years to come.

What should you look for in window suppliers?

Boston Trade Frames team in factory

Proven manufacturing standards

Look for suppliers with their own manufacturing facilities. Boston Trade Frames, for example, operates from a 20,000 sq ft facility in Lincolnshire, giving us complete control over quality at every stage. This means consistency across our range of double glazing products, from casement windows to bay windows and sash windows.
When suppliers manufacture in-house, they can ensure every window meets the latest building regulations and delivers excellent insulation properties.

Strong accreditations and guarantees

The best double glazing company will proudly display industry accreditations. These aren’t just badges – they’re proof of commitment to quality and customer service. Look for comprehensive guarantees that protect your investment long-term, giving you genuine peace of mind.

Wide range of products and customisation options

Your home is unique, so your supplier should offer variety. Whether you need replacement uPVC windows, triple glazing for superior thermal performance or aluminium windows for a contemporary look, flexibility matters.

A quality supplier will offer:

  • Multiple window styles (casement, sash, bay and tilt and turn)
  • Various types of glass for different needs
  • Different security features to keep your home safe
  • A range of colours to match your property
  • Low maintenance options that save you time

Energy performance expertise

In smaller kitchens, the way bi-fold doors open means they don’t eat into your kitchen space like traditional exterior doors. When closed, the slim door frames and large panes of glass maintain that open space feeling even in compact areas.

For an open plan kitchen and dining area, bifold doors help define zones without creating physical barriers. You can separate the cooking and dining space visually while maintaining that cohesive, airy feel throughout.

Material and style options

Modern double glazing should work hard to reduce your energy bills. Ask potential suppliers about energy ratings and thermal performance. The best suppliers will provide valuable insights into which type of glass suits your needs – whether that’s standard double glazing or high-performance triple glazing for maximum noise reduction and insulation.

White sliding sash windows close up

What makes the best double glazing suppliers stand out?

Customer service that goes the distance

From your first enquiry to years after installation, excellent customer service makes all the difference. A dedicated customer service team should support you every step of the way, answering questions and addressing concerns promptly.
Don’t just take marketing claims at face value. Check customer reviews and customer feedback to see what previous clients really think.

Local knowledge and reliability

Suppliers who’ve built their reputation in local areas often provide better service than national chains. They understand local building requirements and have a vested interest in maintaining their reputation within the community.
Boston Trade Frames has been serving the region since 1984, building lasting relationships based on trust and quality workmanship.

Cream uPVC Liniar Windows

How do I know if I’m making an informed decision?

Start by requesting a no obligation quote from several suppliers. Compare not just prices, but what’s included: guarantees, energy efficiency specifications and the quality of materials. Ask about their range of double glazing options and whether they offer patio doors or other products you might need.
The right supplier will help you understand all the key factors affecting your choice, ensuring their products meet your requirements for security, insulation and style.

Making the right choice

Choosing the wrong supplier can mean living with draughty windows, poor customer support and products that don’t deliver on promises. But selecting window suppliers with proven experience, high quality products and genuine expertise gives you confidence in your investment.
The popular choice isn’t always the right choice – focus on suppliers who demonstrate real knowledge, offer transparent information and back their work with solid guarantees.

Ready to explore your options?

Boston Trade Frames combines decades of manufacturing experience with a commitment to quality and customer satisfaction. Our comprehensive range covers everything from traditional sash windows to modern aluminium designs, all manufactured to exacting standards in our Lincolnshire facility.
Contact our customer service team today for expert advice and your no obligation quote. We’ll help you find the perfect fit for your home, ensuring you get the thermal performance, security and style you deserve.

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