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Exterior Plas has been fitting windows and doors across London for many years, and understands that property owners need a home or workplace that stays warm, quiet and secure. With so many double glazing companies in London to choose from, we know the decision is not always straightforward. That’s why we keep our approach simple: clear quotes, no pressure, and installation work built to last well beyond the day it’s fitted.
Our experience spans everything from Victorian terraces with their share of quirks and irregularities to full commercial glazing projects on office buildings where downtime simply isn’t an option. That range of work is a large part of why clients return to us time and again. Among the double glazing companies in London, we believe what sets us apart is our willingness to tailor each installation to the property, rather than applying the same fixed package regardless of what the building actually needs.
Every property comes with its own set of demands, and after years of working across London, we’ve learned not to expect anything to be entirely standard. From sash windows requiring careful restoration to the awkward angles common in loft conversions, we have handled a broad range of challenges and priced each project accordingly. Our double glazed windows and doors in London are specified around the building’s actual requirements, not around whatever is easiest to install.
Commercial projects bring a different set of priorities. We build installation schedules around operating hours from the start, be it early mornings, weekends or phased works, because businesses cannot afford prolonged disruption to trading. As commercial glazing experts in London, we’ve completed projects across shopfronts, schools and office premises, and we understand that reliable timekeeping and a tidy finish matter just as much as the quality of the glazing itself.
Anyone who has spent time in older London properties will recognise the familiar issues: draughty frames, single glazing that offers little protection against the cold, and locking mechanisms that provide more reassurance than actual security. We fit multi-point locking systems as standard and offer toughened glass options where appropriate, giving property owners genuine confidence. Reduced draughts also mean a noticeable improvement in heating efficiency over time.
Noise is another issue people consistently raise, especially anyone near a main road or a bus route that runs late into the night. It won’t go completely silent, nothing does in London, but the drop is real, and most clients notice it within a day or two of the fitting being finished. Between the noise reduction and the better insulation, properties tend to just feel calmer once the work’s done.
Here is an outline of how we typically work:
We visit the property before recommending anything. Guessing from photos or a phone call rarely gives an accurate picture.
Every quote is built around the specific property and what the client’s actually trying to fix, not a fixed package.
Our fitters bring years of hands-on experience, and they clean up properly – no having to clean up after our team.
If something needs sorting after the job’s finished, we deal with it directly, no back and forth about liability.
That is our approach in brief — we would rather provide clarity than embellishment.
Many companies claim to offer the best service, so we’d rather outline exactly what we focus on and let our track record speak for itself.
London’s housing stock varies enormously street to street, and so do the planning rules. We’ve worked across most of it.
The price you are quoted at the outset is the price you pay. Nothing gets added once the job’s underway.
We use durable, reliable materials throughout, recognising that lower-cost components often lead to greater expense further down the line.
Years of completed projects across residential and commercial glazing in London have built a reputation founded largely on client referrals.
We would rather be judged on the quality of our completed work than on how persuasive our marketing sounds.
If your windows have begun to stick, your doors no longer close properly, or your business premises could benefit from a smarter, more secure finish, we’re ready to help. A visit from our team costs nothing and carries no obligation. We will assess your property, talk through practical options, and provide a clear recommendation suited to your budget and timeframe.
Our reputation among double glazing companies in London has been built on sound advice rather than pressured sales tactics. Get in touch today, and let us know what’s holding your property back; we’ll take it from there.
Most residential jobs are finished within one to three days. Larger properties or commercial glazing in London projects may take longer, depending on the scope and access to site.
Yes, in most cases. Draught-free frames mean your heating system doesn’t have to work as hard, so you should notice a genuine drop in monthly costs.
Often, yes. We design double glazed windows and doors in London that meet the conservation requirements – retain the period character but increase thermal and security performance.