We work with homeowners, developers and commercial clients across North London, offering a full range of glazing solutions – from sleek aluminium frames to low-maintenance UPVC systems. From our Dagenham manufacturing base we serve North London regularly, with teams experienced in the full range of property types found across the capital’s northern boroughs.
Replacing your windows is one of the most impactful upgrades you can make to a home. Improve thermal efficiency, reduce noise and refresh the look of your property from the outside in.
North London’s housing stock spans an enormous range – from the grand Victorian and Edwardian semis of Muswell Hill and Crouch End, to the dense terraced streets of Finsbury Park and Haringey, the interwar suburbs of Palmers Green and Bounds Green, and the more urban mixed-tenure developments closer to the centre.
That variety means there’s no single right answer when it comes to glazing, and it’s exactly the range our team has spent over 40 years navigating.
Slim profiles, excellent strength and a broad choice of RAL colours. Aluminium windows are the go-to for homeowners who want a premium finish that lasts. Available in casement, bay, picture, tilt & turn, shaped, and gable frames.
In North London’s more affluent residential areas – Muswell Hill, Crouch End, East Finchley, parts of Highgate – aluminium windows are a popular premium choice for the Victorian and Edwardian homes on these streets.
A practical, cost-effective choice that doesn’t compromise on performance. Available in a wide range of styles, colours and finishes – from square and rectangular to arched and circular frames – with each and every window can be tailored to your exact measurements.
uPVC is the most widely fitted window type across North London’s large and varied residential stock – our range covers standard and contemporary finishes, all made to your exact measurements at our Dagenham factory.
Our heritage windows capture the look of traditional steel designs using modern materials by delivering the same timeless aesthetic with far better thermal performance and security.
North London has active conservation areas across several boroughs – particularly in Crouch End, Muswell Hill, Hornsey and parts of Islington and Haringey – where our heritage window range is the appropriate solution.
Proudly independent, family-run glazing specialists since 1983
Fully bespoke, made to your measurements, style and colour
Government-approved registration guarantees safe & insured install
All our windows & doors are built in our Dagenham manufacturing site
Door requirements across North London are as varied as the housing stock – from period-appropriate composite replacements on conservation area terraces in Crouch End, to aluminium bi-folds for extended Edwardian properties in Muswell Hill, to practical uPVC solutions across the area’s large stock of rental and converted properties.
Whether you’re upgrading an original entrance or replacing something that’s simply past its best, our team will help you get it right.
High-performance, built to last, and exceptional security. Available in a wide range of RAL colours and configurations – from bi-folds to front entrance doors – and made to order for a precise fit.
Aluminium bi-fold and sliding doors are popular across North London’s extended Victorian and Edwardian properties, particularly in areas like Muswell Hill, Crouch End and East Finchley where homeowners are making substantial improvements.
A reliable, low-maintenance option that performs well on both security and insulation. Available in a range of styles, finishes, and colours to suit all property types.
A practical and popular choice across North London’s large and varied housing stock – from terraced rentals to owner-occupied semis across Haringey, Barnet and Enfield.
Our GRP composite doors offer the look of a solid timber door without the warping, swelling or repainting that comes with real wood. The outer skin is moulded from glass reinforced plastic, giving it exceptional durability and a finish that holds its colour and texture year after year.
Consistently popular for front door replacements across North London’s Victorian and Edwardian terraces, where the timber-effect finish in heritage colours works naturally with the original brick, render and tiled paths common across the area’s characterful streetscapes.
A roof lantern is one of the most effective ways to flood a kitchen extension or garden room with natural light. DDG Windows supplies and installs aluminium roof lanterns across North London, available in a variety of sizes and glazing options to suit your project and budget.
Our roof lanterns are thermally broken as standard, keeping heat in during winter and reducing solar glare in summer - meaning your new space is comfortable year-round.
Our team regularly carries out installations across North London, covering areas including Wood Green, Muswell Hill, Crouch End, Finsbury Park, Bounds Green, East Finchley, Haringey, Hornsey, Tottenham, Palmers Green, Bowes Park, Highgate, Archway, Islington, Enfield and the surrounding N and EN postcodes.
Want to check if we cover your postcode? Give us a call or drop us a message and we'll let you know.
DDG Windows has been working across North London from our Dagenham base since 1983, and over four decades we’ve built up detailed knowledge of the area’s housing stock across multiple boroughs.
The contrast between the leafy conservation streets of Crouch End and Muswell Hill and the more urban residential mix in Tottenham, Wood Green and Finsbury Park is significant – and it shapes what we recommend on every job. There is no single answer for an area this varied, and our team understands that.
North London has active conservation areas in several locations across Haringey, Barnet and Islington, and the planning requirements for glazing in these zones vary by borough and by street.
Our team will always check what applies to your specific property before recommending a product.
Download our brochure to explore the full range, or book a free consultation and let our team guide you through the options. Either way, there’s no obligation and no pushy sales process.
Our people are at the heart of everything we do. Many of our team members have been with us for decades, working alongside younger innovators to ensure DDG stays ahead with cutting-edge machinery, contemporary design, and expert craftsmanship. From Neil’s first home visits - with no pushy sales tactics, just honest quotes - to our installers who treat every property with respect, you’ll always feel supported and looked after.
Experienced. Dedicated. Customer-focused. Our directors and senior management team lead with decades of experience in window and door design, manufacturing, and installation. Based in London and Essex, the DDG leadership team oversees every stage of production, ensuring quality craftsmanship, efficient service, and customer satisfaction on every project.
Skilled. Reliable. Proud of their craft. From our expert fabricators and finishers in the workshop to our professional fitters, installers, and delivery drivers, every member of the DDG team plays an essential role. Their precision and attention to detail ensure your new windows and doors are expertly crafted, installed, and finished, right here in our London factory and fitted across homes throughout the UK.
Usually within 48 hours of your enquiry or site visit. We cover North London regularly from our Dagenham base and can arrange surveys across the N and EN postcodes without long lead times.
It depends on the scope of the job and site conditions, but as a general guide our two-man installation teams typically fit three to six windows per day. We'll give you a clearer timeline once we've completed your site survey - for larger North London properties with multiple replacement windows or doors, we'll factor that into the schedule upfront.
We'll confirm your style choices, glass spec, opening configurations and colour options, then put everything into a formal order. A deposit is required and a site survey will be booked so we can take accurate measurements before manufacturing begins at our Dagenham facility.
Yes - every window, door and roof lantern we fit across North London is installed by our own trained and accredited team. We never subcontract, so the same standard applies on every job from Stratford to Hornchurch.
Conservation areas across North London's boroughs - particularly in Crouch End, Muswell Hill, Hornsey and parts of Islington - can restrict what replacement glazing is permissible on street-facing windows. In practice this usually means like-for-like replacements in appropriate materials, which often points to our heritage window range. The specific requirements vary by borough and by street, so we'll check exactly what applies to your address during the initial consultation before making any recommendations.
Yes. While our Dagenham base is closer to the eastern parts of North London, we cover the full area regularly - including Islington, Highgate, Archway and the boroughs further west. Our installation teams are mobile and the lead times across North London are consistent. If you're unsure whether we cover your specific postcode, give us a call and we'll confirm straight away.
