Customer types

We provide secondary double for a wide range of projects and building types, to three types of customer: homeowners, trade and commercial.


homeownerIt’s simple for homeowners to take advantage of the various benefits of secondary double glazing. Any home with original windows or even early double-glazed windows can improve heat insulation and reduce noise by adding secondary, for a fraction of the cost of replacing the windows. And with energy costs rising all the time, installing secondary can pay for itself quicker than you may think.

If you want secondary double glazing in your home, you have two options: use a double glazing company to install it for you, or buy direct and install it yourself. Using an installer is hassle-free and in many homes can be done in less than a day. Your installer will measure all the windows for you, and then return to install the secondary glazing at a time that’s convenient for you. Of course, this is also the more expensive option.

Installing secondary glazing yourself is a simple process for anyone with basic DIY skills. Check our measuring guide to find out how to accurately measure and draw out your windows, decide what options you want and then you’re ready to order. We’ll guide you through the ordering process and then, once the windows are manufactured, we’ll deliver them to you fully assembled and pre-drilled, ready to be installed. You don’t need any tools other than a screwdriver (preferably cordless) for direct-fix windows, and a drill for reveal-fix. Having someone to help lift and hold the windows while you fix them in place is also advisable. There’s lots of useful information in the Help & Advice and Downloads sections of this website to guide you through the whole process.

Once fitted, your secondary glazing is very low maintenance, and an occasional wipe-down with a standard window cleaner will keep it clean.


trade installerDouble-glazing companies will be well aware of secondary glazing, but perhaps you’re not aware that – having almost completely disappeared in the 1990s and 2000s, secondary glazing is growing ever more popular again. Partly down to tougher economic conditions, partly due to ‘uPVC tiredness’ and definitely as a result of consumer interest in heritage and conservation, secondary glazing is undergoing a real resurgence. It’s also becoming much more popular in the public and commercial sectors.

Secondary double glazing is low-cost, versatile and increasingly popular, especially with homeowners with older properties where replacement windows aren’t an option. It’s quick and easy to install – your current fitters won’t need any extra training or tools – and they’ll fit out a standard house in less than day.

If you’re interested in offering a profitable extra product, contact us to find out more about our secondary glazing system and the support we can offer you.


architectSecondary double glazing is ideal for refurbishment projects in a wide variety of public and commercial buildings, including schools, hospitals, offices and churches. It provides a low-cost option for projects where replacement windows are not possible (listed or conservation buildings) or uneconomical.

Secondary glazing is easy to specify – it simply matches the layout of the window it’s covering – and there aren’t many options to get to grips with. If the building is fully or part occupied during the project, secondary can be specified safe in the knowledge that installing it will cause little or no mess or disruption.

Once on-site, secondary is quick and easy to install. If you’re project already includes carpenters for instance, they will be able to install secondary glazing without extra training. This is especially useful on sensitive projects where extra sub-contractors have to be vetted and approved before attending site.

We have a range of technical drawings available in our downloads section, to assist you with the specification process. If you;d like any more information secondary glazing for commercial projects, please contact us.


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