Home Improvement Sidcup


Welcome to Affix Windows: Double Glazing Sidcup, Kent.

Our team of experts supply and install high quality double glazed windows, doors and conservatories in Sidcup, Dartford, Blackfen, Bexleyheath, Bromley, Chislehurst, Gillingham, Welling, Croydon, Maidstone, Kent and London. Our products are designed to meet our customer’s needs. Quality is our top priority here at Affix Windows, with all of our structures complying with British Standards.

If you have any questions regarding our products, please contact us today. You can do this via our contact form or by calling us. Alternatively, you can get a free online double glazing Kent quote using our online double glazing designer.

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A Family Run Business Based in Sidcup

Our family run business established in Sidcup pride ourselves on our professional service and traditional values. With decades of experience in double glazing and home improvement projects, you can rely on our friendly and welcoming team to provide with you with an outstanding service. We operate with a no hard sales approach, meaning that we will not pressure you into making any decisions about your project. We’ll simply provide you with all the information you require and let you make the decision!

We have various reputable accreditations, including being Which? Trusted Traders and being FENSA registered, but our biggest advocates are our valued customers. Please feel free to read our gleaming customer reviews from local homeowners who have supported our family run business time and time again.

We have a showroom in Sidcup where our expert team can advise you and offer their assistance in starting your next home improvement project. Book an appointment to come and visit us and we’ll even provide you with the directions from your home.

We look forward to seeing you!

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Our Products


Our most popular renovation option, our double gazed windows deliver excellent thermal efficiency and complete weatherproofing. We offer a range of different Kent double glazing styles, with options for modern and traditional homes alike. Explore our windows range today.


We have external doors for everyone. Whether you’re better connecting your Sidcup home and garden, or are looking to add a splash colour out front, we have you covered. We’ve options for all different budgets, so check out our door range now!


For those looking to make significant renovations here in Kent, we have our conservatories. Thermally efficient, low maintenance made bespoke to order, they’re perfect for you. We have options for everyone, so find your dream extension with Affix.

Finance Options Available

Did you know that Affix offer a range finance options? It's true, take a look at our finance page and learn more about how we can help you easily spread the cost of your next home improvement!

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What our Customers Have Said:

Want to know what our customers think about AFFIX Windows? Take a look at some of the glowing reviews previous clients of ours have left us.

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Excellent Customer Service

The Affix team were very professional, very friendly excellent value for the money. From start to finish the point of contact they were available and ready to answer any of my questions. The house was left as clean as possible, for which I was extremely grateful. I completely recommend Affix. The whole 4 days to re-fit my windows and doors was fast, efficient with the friendliest team. Thank you all I love my windows and doors.

- Mrs Bevan -

Delighted With Our Windows

Very pleased with the service we received from start to finish. The salesman was very helpful & not pushy. We were very quickly contacted by the surveyor & he gave us a realistic estimate as to when we should expect the job to be completed. We received a call earlier than expected even though this was just after the festive season. The fitters arrived promptly at the agreed time & completed early in the afternoon of the same day even though we had been advised that they might have to finish off the next day. The fitters were friendly & efficient & cleared up very well afterwards. We would definitely recommend Affix Windows.

- Mrs Burnett -

Professional – A first class service

From first visit to survey and then installation. Jamie and Phil installed our front door promptly and without mess. Very pleased.

- Ian, Kent -

Very impressed with Affix from start to finish. Strongly recommended!

I was very impressed with Affix from start to finish. Initial contact very helpful & not at all pushy. When I accepted the quote a surveyor arranged to call within a couple of days, & even though Christmas intervened we heard from Affix regarding our installation date in January & earlier than expected. Fitters arrived punctually on the day, finished the job by early afternoon, even though we were told it might run into a 2nd day. Absolutely delighted with the windows, the installation was carried out with the minimum of fuss or mess & they cleared up when finished & ensured I examined all the windows to make sure I was satisfied, Would strongly recommend Affix.

- John -

Contact Us for Double Glazing Kent

If you prefer to discuss your Sidcup windows and doors with our team, then you can contact us to book an appointment.  You can find us in Blackfen Road, Kent where our showroom offers a range of industry-leading products. We are here to help you get the very best double glazing for your property at the best prices possible, so get in touch!

We even have an expert team on hand to install your new double glazed products, making sure it is the perfect fit. All of our options for Sidcup and Kent homes are low maintenance and have been designed to save you time and money so that your Sidcup home improvements are genuinely cost-effective and will add value to your home.

Find your bespoke double glazing Kent quotes with Affix Windows today. Just enter your specifications and start designing your replacement double glazing today. Our team will then be in touch with you to discuss your personalised price.

View Our Double Glazing Designer Video

Did you know that we have a range of bespoke double glazing Kent designers for you to use? It’s true! You can use our online quoting designer to create the perfect product for your home. It’s free and very easy to use, so test it out today and create the perfect windows or doors for your Kent home.

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