Beautiful Wooden Sash Windows

London Sash Windows - Sash Window Repair by Ventrolla
Benefit From Modern Draught-Proofing Performance
While Retaining Original Charm
Ventrolla Joinery Workshop - Bespoke timber Windows
Traditional Craftsmanship
Meets Modern Machining
Bespoke Casement Window by Ventrolla Harrogate
Your Choice Of The Finest Hardwood
and Engineered Timbers
Ventrolla Joinery Window Workshop Manufactured in Britain
All Our Bespoke Windows
Are Manufactured In Britain
Bespoke new slim double glazed sash windows by Ventrolla
Every New Window Is Fitted With
Our Unique Slim Double Glazing

Replacement Sash Windows by Ventrolla

The Finest bespoke Wooden Windows

Colour Contrasting Reception Room With Timber Sash Windows Repaired by Ventrolla
Why choose Ventrolla for your window restoration project?

Ventrolla have been crafting and replacing wooden sash windows for over 35 years. We operate nationwide and are proud to deliver a 5 star, friendly service to our customers helping them retain the charm and character of their homes. 


Original Period Wooden Sash Windows

Arguably, the beauty and character of your home is conveyed by its windows. Imagine a 150 year old 3 story terrace or a Victorian double fronted detached property where the windows have been left to deteriorate or, worse, have been replaced with white upvc imitations.

No other part of your home’s facade imparts such an impact on the visual appeal and value. This is why we pride ourselves on crafting the most beautiful, bespoke, original style wooden sash windows.

Timber Box Sash Windows

Where repair or refurbishment is not an option we can manufacture beautiful new sash windows, including the box frame that will match the existing style of your timber windows. Using a combination of modern 21st century manufacturing techniques and traditional carpentry skills in our UK joinery workshops we produce beautiful period windows to your exact specifications. The replacement windows will look and feel just like the originals while eliminating draughts, rattles and offering energy efficiencies.

New Bespoke Authentic Style Windows

For maximum thermal efficiency we use slim double glazed units which enables us to manufacture windows using traditional carpentry methods, including ‘through’ or ‘solid’ glazing bars, which help to retain the window’s authentic feel and look but also benefit from modern heat performance. If your property is Listed, in a conservation area or has protected status then we can use single glazed units to maintain authenticity.

Finest Seasoned Timber Crafted By Experts

The timber we use depends on your requirements and budget and can range from softwood and hardwood through to engineered timbers like Accoya. Our team will help you weigh up the benefits of the various timbers and choose the finishing hardware.

The Cost Of New Sash Windows

The cost of a bespoke wooden sash windows can vary depending upon your unique style, size of window, type of wood and the glazing chosen. Call us today on 0800 378 278 to discuss your requirements.

Our Guarantee and Promise

We offer a 5 year guarantee on all materials and work. We also promise that we will treat your home and furnishings with care. Our Surveyors will give you the advice and guidance you need to make the right decision for your window renovation project and never use hard sell techniques. Our installers will be on time, polite and work with the minimum disruption to your home.

Some of the hundreds of New Timber Windows we have replaced

Over the 35 years Ventrolla has been trading we have repaired or replaced many 10’s of thousands of windows. Take a look at our Case Studies to see more. 

1 over 1 in London
1 over 1 timber sash windows
1 over 1 in Manchester
1 over 1 sliding sash windows
6 over 6 In Derby
Idyllic Country Kitchen With Wooden Sash Windows Repaired By Ventrolla
6 over 6 In Liverpool
6 over 6 windows - Port of Liverpool
1 over 1 bay window in York
Sash Window Repair in York
6 over 6 in Horley
Ventrolla South East - Sash Window Repair 2
6 over 6 in Manchester
9 over 9 in Salford

Please pass on our special thanks to Craig for his excellent workmanship. It was a pleasure to have such a skilful and efficient craftsman working on renovating our old sash windows and fitting two new ones. He always arrived on time, answered our many questions politely and patiently, and thoroughly cleaned up any mess made. A real example to others!

Please don’t be put off by the word ‘manufacture’, the honed skills of our joiners in our UK-based workshops ensure a bespoke, non-mass-market, product. 

Each bespoke timber window is lovingly built to your home’s bespoke specifications, and your requirements, using our traditional carpentry methods. Along with being aesthetically correct for the period of your home all of our new sliding windows and casement windows come with our patented Perimeter Sealing System to banish draughts and out high performance slim double glazing. Plus we fit click in click out removal system which makes cleaning and painting your windows simple. 

Authenticity is the key to our new joinery, and these windows retain the presence you want whilst delivering the modern glazing standards you need.

We use a special engineered wood called Accoya which is incredibly stable, resists rot and warping.

We offer a full range of window hardware including finger pulls, casement stays, pulleys, safety stops, latches and pole hooks in Chrome Plate, Satin Nickel, Polished Brass and Antique Brass finishes

Our Joinery Workshop where traditional carpentry skills combine with 21st century machining to produce beautiful wooden windows you can be proud of
Bespoke New Sash Windows
New Wooden Bespoke Sash Windows - Ventrolla Harrogate
New Wooden Bespoke Sash Box Frame - Ventrolla Harrogate
Sash Window Finger Pulls 1024px - Window Hardware By Ventrolla
Choice of Glazing

Choose from Single-glazed units - for use where historic protection applies (listed buildings or conservation areas), or Double-glazed units - that comply with current Building Regulations, Part L

Glazing specification of Single Glazed Units

4mm float glass or 3mm drawn glass is installed into the new sashes and a new box frame made to match the original window (mainly applicable for listed buildings, those within conservation areas and other properties with restrictions).

Glazing specification of Double-glazed Units

Slim 16mm (4/8/4) double glazed units utilising the latest Warm Edge Spacer Bar technology, Planitherm Total+ glass (outer pane) and krypton filled cavity.
Centre Pane U-Value of 1.2 Wm²K and Total Window U-Value of 1.5 Wm²K

Timber specification

The new windows are manufactured from the very finest and durable timber, the choice of which depends on our customers specification and budget. The replacement sashes are manufactured using a range of selected traditional ‘through’ glazing bars and are manufactured and hand finished by our skilled craftsmen.

Ventrolla Sash Removal System (SRS)

To assist with future maintenance and painting we can install our patented Sash Removal System (SRS) that enables both the top and bottom sashes to be removed for redecoration.

Ventrolla Perimeter Sealing System (VPSS) Specification

All our new replacement windows include the unique VPSS draught system, as standard, which has been tested to BS 6375-1 2009 Class 3, equivalent to 71mph winds.



Your new windows are supplied sprayed with a high build base coat and an anti-stain primer, ready for final finishing coat by others.

Visit our ‘contact us’ now page and let us help make your windows exceptional