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Affordable Timber Sash Windows in London

London Joiner Services offers affordable sash windows and sash window refurbishment in London. If you love the look of timber sash windows, or perhaps want to restore your home to its former glory, our timber sash window service is just the thing for you!

Our team of expert joiners are available to install new wooden sash windows, and for sash window repair across London. Get in touch with us today to discuss your needs or to request a quote.

Timber Sash Windows ​

Our wooden sash windows at London Joinery Services are hand-crafted to the highest quality from sustainable timber, and installed by our team of FENSA member fitters.

Our bespoke, double-glazed wooden sash windows are manufactured at our own facility in North London, and can be designed to match any existing window style, including Victorian and Georgian, as well as contemporary styles.

Our timber sash windows meet UK conservation criteria (including listed buildings) and building regulations, providing hand-crafted, affordable timber sash windows with modern thermal insulation qualities. 

Made to Measure Wooden Sash windows

Affordable Timber Sash Windows

Our Wooden Sash Window Double Glazing Solutions

Replacement Sashes 

Our timber sash window restoration service replaces your original single glazed sash windows with bespoke double glazed wooden sash windows without major disruption to your property. As long as the frames are in good condition, we can simply replace the sliding parts and the glass, saving you money, time, and mess. Of course, if required, we can also provide you with brand new timber sash window frames that suit the design of your property. 

Replacement sashes are made from the finest timber, the choice of which will depend upon preference and budget. Meanwhile, for glazing, We install slim glazing units, allowing us to manufacture sliding sashes using traditional carpentry methods, including solid glazing bars, allowing us to retain the window’s authentic look and feel. 

  • Slim 12mm or 14mm double glazed units, Planitherm Total+ glass (outer pane) and gas-filled a cavity.

  • Centre Pane U-Value of 1.5 Wm²K

  • Total Window U-Value of 1.8 Wm²K

Double Glazed Seal Box 

Our bespoke, double-glazed wooden sash windows are manufactured in our own workshop and can be designed to match any existing window style, including Victorian, Georgian, and contemporary styles.

Our timber sash windows meet UK conservation criteria (including listed buildings), and comply with Part L of Building Regulations, providing crafted timber sash windows with modern thermal insulation qualities.

We select only the finest timbers from renewable sources, the choice will depend upon preference and budget. Like with timber sash window restoration, we use slim glazing units, allowing us to manufacture sliding sashes using traditional carpentry methods.


  • 24mm (4/16/4) double glazed units, Low E internal glass keeps your home warm+Low iron outer glass and gas-filled cavity.

  • Centre Pane U-Value of 1.2 Wm²K

  • Total Window U-Value of 1.5 Wm²K

Sliding Sash Windows



Unlike most windows companies, we fit seals into your new window as standard. Using sets of Q-Lon weatherproof seals offers optimal draft sealing, noise reduction, and allows your windows to slide smoothly eliminating sash rattle. The first thing that most of our customers say is that they are amazed at how much quieter & warmer their home is since they have had their new windows installed, and how much it has improved their quality of life


London Joinery Services offer a range of sash window styles. Each sliding sash window is bespoke and made to measure in our workshop in North London. We can recreate your existing window design and glazing patterns, allowing you to retain the period look of your home. If required we can also make your sash windows conform to listed building and conservation area requirements, using a combination of our conservation designs, heritage double or slimline glazing, or single glazing & putty. Check out our conservation and listed building windows here.

Free Quote


Our experienced installation Fensa member teams will ensure that the work is carried out to the highest standards and with the utmost care and consideration for your home. Our installation service includes:

  • Internal protection from dust and dirt

  • Making good on both inside and outside walls to a ‘sanded and ready to paint

  • New external ‘mortar pointing’ around the outer edge

  • Disposal of old items.

  • Our fitters will take care to protect your property while they are working and will leave everything in a clean and tidy condition.


All our sliding sash windows are manufactured to high standards from top quality materials and come complete with a comprehensive 10-year guarantee as standard. Check out our guarantees here. Our sash windows are perfectly balanced and they slide effortlessly with one hand, with exacting glass standards, you’ll love how beautiful our windows are. We only use the highest quality slow grown Grade 1 pine, meranti hardwood, European oak or Accoya™ for all windows and doors, the choice is yours.



When using our fitting services , and as members of the FENSA scheme both your deposit and warranty are independently insured with an insurance backed guarantee policy from The Independent Warranty Association (IWA), more details available on the IWA website. In addition to your FENSA certificate your new windows will also be registered with your local authority as legal and compliant with building regulations, this is vital if you ever decide to sell your property.​

All of our products are 'Made in Britain' from start to finish. Welcome to come to our workshop in North London at any time for checking the process of your order.

We'll Beat any sale price, Let's Prove it.

We're so confident of the value of our products that we offer a 'Price Promise'. Find the same quality product for less in our service area within 7 days and we'll beat the difference. The like for like quotation must be for a product that we are able to supply and must be of the same size, same design, and same quality.

Simply let us know the competitor's name and product details (accompanied with a copy of the original quotation you have received) – we’ll then verify the price and, if the competitor’s service conditions are the same as ours, we’ll beat the price or refund the difference as appropria


Get in touch with us today to discuss your project. Our expert team will help you to find the best wooden sash window solution for your project, and can provide you with a free bespoke quote. 


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