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, 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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Create your custom composite door for free with our new Endurance & Solidor door designers. Explore a vast array of styles, colours, glass, and components and receive your free quote today.

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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.

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.

High Quality Double Glazing in Sidcup & Throughout Kent

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