Bespoke Conservation Windows for Conservation Areas


We understand the importance of ensuring that the windows you choose to restore your conversion property are not only legal but exude quality. Our team has over 20 year’s experience in the sash windows industry, repairing and installing stunning sash windows across the UK. We specialise in installing timber and UPVC windows in both period and conversation properties.

All windows are designed from scratch and are made bespoke to ensure your exact requirements are met. This ensures that all windows are made unique to your property, so no product is ever the same.

We pride ourselves on combining quality sash windows with exceptional customer experience. We are always on-hand to provide advice through the installation period and afterwards. Your windows come with several guarantees that ensure quality is maintained throughout the seasons.

Please explore our range of sash windows specifically designed to follow the rules and regulations of conversation areas. You can rest assured that the windows below adhere to all conversation areas and our team has more than enough experience to delicately install these timeless windows to ensure your conversation property maintains its charm and heritage.

Contact us today to purchase your sash windows

Below, you will find sash windows specifically designed for conservation areas. If you have any questions regarding our windows, how they are installed or any customization requirements you ended, please do not hesitate to ask our friendly team.

*All our products are proudly manufactured in the UK.

We are committed to ensuring that high quality remains consistent throughout our entire product range & installation process. We are registered members of FENSA who regulate our installations, and also issue a GGFI 10-year insurance backed guarantee with every installation. We are rated as 5 stars on Check-a-Trade by our valued customers.

Explore Our Stunning Range of Conservation Windows

PVCU Sliding Sash

We design, build and install heritage PVCU sash windows for customers across the UK. Each UPVC sliding sash is designed with all traditional detailing typically found in period windows. This includes deep bottom rails, slim sashes and you can even opt to include a stunning Georgian bar (whether it’s required by the heritage property or simply for aesthetics). Our PVCU sliding sash windows are specifically designed to replicate the slim lines and intricate detailing of timber windows.

Additional design features include:

  • A deep bottom rail
  • Simulated putty lines
  • Sculpted glazing beads
  • Georgian bars
  • Classic style brass catches
  • Optional decorative horns

PVCU Flush Fit Casement

Our PVCU flush fit casement windows are the ideal solution for conversation areas and properties that are looking for like-for-like replica windows. Our flush fit casement windows are specifically designed to replicate the charm and heritage of the previous window

This casement gives an identical putty line externally and decorative detailing internally and also offers flush sashes and equal sightlines throughout. The design also comes with a traditional weather rail and Georgian bars to mimic the previous design.

This design also seeks to replicate intricacies including:

  • Butt hinges
  • Monkey tail handles
  • Peg stats
  • Cottage flush sash designs

Timber Sliding Sash

Our timber sliding sash windows are a fan-favourite in listed buildings. They are perfect for restoring or installing windows in Edwardian country estates, Victorian townhouses, and of course, conservation areas. Timber sliding sash windows are designed to allow a lot of light into the building, allowing clear views into the interior of the property.

If your conservation area requires a reduced frame width to fit behind reveals (this is common in a certain period and conservation properties) then this design is perfect for your property. This design can be built bespoke; with either a spiral balance or a cord and weighted mechanism. With regards to your glazing options, this range comes in a single glaze 4mm or slimline 14mm option. With the slimline version, you can choose to have lambs tongue profiling for easier accessibility.

Timber Flush Fit Casement

In most cases, timber flush casement windows are installed in properties that are governed by conservation demands. You will not be able to install any window in these buildings unless they are approved by the governing body of the property.

Our timber flush windows are designed to include lambs tongue moulding board, fixed sashes casement states, night vents, and friction hinges that are easy to clean. All of this enhances the window’s original charm and character without compromising the traditional design. Additionally, these additions and the way we design flush fit casement windows will ensure that they stand the test of time.

Quality Combined with Experience

We understand that finding the right windows for your conversation areas can become time-consuming and difficult regarding the rules governing what you can and can’t install. With Sash Windows London Ltd, we alleviate all that time and stress because and can help you choose the right windows for your conversation property.

Each window is designed bespoke and we will remove the whole window as opposed to just the box, this means that the entire design will look traditional and match the original design of the property.

All Conservation Windows are Designed for Durability

You have the choice of what material you would like your windows to be. This includes engineered Redwood, Red Grandis and Accoya, all of which have been selected based on their aesthetics and durability.

All our sash windows benefit from an A-rated argon gas filled glazing and neoprene seals to all joins, eliminating cold and draughts.

Purchase Your Sliding Sash Windows Today

Purchasing windows for yoru conservation property is made easy with us, simply contact our team via the contact form or by calling the number above to get started. During our chat, you will be able to discuss your requirements and installation dates.

Every window is created bespoke to your requirements, meaning that you will receive a unique, timeless window that restores the charm and elegance of your period or conversation property.

All windows come with guarantees to assure long-lasting quality, including:

  • 10 year workmanship warranty
  • 10 year paint and stain warranty
  • 5 year hardware warranty
  • 10 year glazing warranty

Contact our team today to restore your heritage property.