brochure

Knowledge Hub

Learn how to get the very best from your heritage building

Knowledge Hub

About Ventrolla

As heritage specialists, Ventrolla is obsessed with restoring heritage timber windows and doors, and has been for over 40 years.

Our Team

We share a deep passion for preserving heritage, combining exceptional craftsmanship, attention to detail, and decades of experience.

Our Team

Projects

Working with some of the most discerning heritage property homeowners and retrofit architects, contractors, and surveyors on their restoration projects.

Projects
brochure

Request a Brochure

Our helpful brochure explains all about our timber restoration and replacement services.

Request a Brochure

Timber Windows

With nationwide coverage, you always benefit from local British craftsmanship.

Timber Doors

Manufactured in our bespoke joinery houses.

Enquire

Give your heritage building the craftsmanship it deserves.

Enquire
brochure

Request a Brochure

Our helpful brochure explains all about our timber restoration and replacement services.

Request a Brochure

Consultancy & project management

Ensuring seamless and efficient execution for commercial projects.

Consultancy & project management

Projects

Working with some of the most discerning heritage property homeowners and retrofit architects, contractors, and surveyors on their restoration projects.

Projects

Cambridge

Sash Window Repair and Timber Window Restoration in Cambridge

At Ventrolla, we’ve spent more than 40 years restoring timber windows and replacing wooden windows and doors of listed and period buildings, from medieval to neoclassical style homes and commercial spaces that line the streets of Cambridge. Whether your home is in Newnham, Chesterton, or the historic centre, our Cambridge team is here to keep its heritage windows beautiful, functional, and fit for another century of use.

Sash Window Repair and Timber Window Restoration in Cambridge

Why choose Ventrolla for your windows and doors in Cambridge

British Craftsmanship

British Craftsmanship

Every window handcrafted by our master joiners and local craftsmen.

Sustainably sourced

Sustainably sourced

Durable, premium timber built to last.

Listed Property specialists

Listed Property specialists

Our national team of master craftsmen, have unrivalled knowledge and expertise.

Rated excellent on Trustpilot

Rated excellent on Trustpilot

Five-star reviews from heritage property owners across the UK.

Over 1 million windows restored

Over 1 million windows restored

Four decades of specialist window restoration and timber doors expertise.

Nationwide service

Nationwide service

Locally based surveyors and craftspeople.

Before/After

Our Cambridge window restoration work

Before

Before Image

After

After Image

From casement repair to sash window restoration in Victorian and Edwardian terraces, our gallery shows heritage window transformation and doors done right.

Before

Before Image

After

After Image

Before

Before Image

After

After Image

Enquire now

Trusted by many

Ventrolla in your words

Excellent

Star rating
Trustpilot
Star rating

Thorough renovation of sash windows in Grade II listed property

We were limited in what we were able to do to our sash windows due to Grade II listing. But our installer Justin did a very thorough repair and renovation. Every window now opens smoothly and easily and as an unexpected benefit the exterior noise is significantly reduced by the draughtproofing system (we were told this would be the case but still had not really expected it!). Inevitably there is some dust created by the process, but Justin was very tidy and cleaned up each room after he had finished. The only downsides of the Ventrolla is a long lead time and that the windows are only primed as part of the process, so you need to organise painting separately. Overall we were very happy and would recommend Ventrolla if you want a thorough job.

Richard Dewhurst , 00 Month

Star rating

Bathroom Window Replacement

I have recently had more completed by Ventrolla at my property. Carl and Dean who completed the installation at my property arrived promptly, were polite and courteous, considerate to our needs and completed the work to a high standard. Really pleased.

John Riggott

Star rating

Excellence – start to finish

At every stage in our dealings with Ventrolla, we got all the information we needed from Technical Staff who made it easier for us to understand what to expect. The installation was handled with great expertise by Allan & Lindsay and the finished quality is excellent. We appreciated their diligence in ensuring that protective coverings were suitable and the site was cleared at the end of each day. Nothing was too much bother and the work was carried out to the highest standards. For anyone contemplating 'double glazing' we would not hesitate in recommending Ventrolla,

BC , 00 Month

Heritage window specialists for period homes across Cambridge

A university city demands restoration specialists with the technical skill and the patience to match. Our surveyors know the planning landscape across central Cambridge – from listed building consent for older properties to the conservation area rules that govern much of the city. For more complex heritage applications, our Ventrolla Consult planning advisory service can guide you from the very first sketch.

Your neighbours trust us too

We’ve been in your neighbourhood

Our Cambridge team has restored windows across the city and surrounding areas, from Newnham, Chesterton and Romsey to Mill Road, Trumpington and Cherry Hinton. Conservation-minded property owners tend to compare notes, and our enquiries often come through recommendations.

Enquire now

our promise

Up to

10 years

Manufacturing guarantee

Up to

20 years

Window glazing guarantee

Up to

10 years

Paintwork finish guarantee

Up to

30 years

Rot and decay guarantee

Enquire now

About Cambridge’s architecture

Cambridge’s window heritage is as layered as its streets. Medieval stone mullions with leaded lights sit alongside Georgian sashes, each carrying its own set of challenges: draughts, rattles, dust ingress, sticking sashes, failed putty, and more.

Our approach is to restore first, replicate only where necessary. The award-winning Ventrolla Perimeter Sealing System (VPSS™) delivers effective draught-proofing, improving energy efficiency by up to 30%, without altering appearance; our bespoke joinery reproduces every original profile down to the millimetre.

Enquire now

accreditations

Complimentary window survey in Cambridge

Book a complimentary window survey with one of our heritage surveyors to provide advice on the options available to you. We provide practical advice on restoration vs. replacement to guide on whether your windows can be restored rather than replaced. If windows are beyond repair, we will provide you with the best options for replacement to ensure your period home retains its original features whilst improving performance.

Enquire now

Frequently asked questions

01

Is it better to restore sash windows in my Cambridge property or replace them?

In many cases, restoring original sash windows is a more appropriate solution than replacing them. Traditional timber sash windows were designed to last for generations and can often be brought back to life and upgraded even when they appear to be beyond repair. Professional restoration can address issues such as rotten timber, broken sash cords, rattling frames, draughts and poor operation while retaining the original character of the property.

For period homes throughout Cambridge, restoration also helps preserve important architectural features that contribute to a property’s appearance and value. A professional survey can determine whether restoration, replacement or a combination of both options would provide the best long-term outcome.

02

How much does sash window restoration cost?

The cost of sash window restoration varies depending on the condition of the windows, the number being restored and the level of work required. Factors such as timber repairs, sash cord replacement, draught-proofing, glazing upgrades and decorative repairs can all influence the overall project cost.

Because every property is different, there is no standard price that applies to all projects. Following a detailed survey, homeowners will receive recommendations tailored to the condition of their windows and the specific requirements of the property. Investing in restoration can often prove more cost-effective than full replacement while helping to preserve original features and extend the lifespan of existing windows.

At Ventrolla, we offer a free, no obligation survey and quotation, to help you make the best decisions when it comes to preserving the heritage of your home.

03

Can original timber windows be made more energy efficient?

Yes. Many homeowners are surprised by how much the energy efficiency of original timber windows can be improved through specialist restoration techniques. Draught-proofing systems can significantly reduce unwanted air leakage, while secondary glazing can provide additional insulation and help improve thermal performance.

These upgrades can make period properties more comfortable throughout the year by helping to reduce heat loss during colder months and minimising draughts around windows. In many cases, homeowners can achieve noticeable improvements in comfort and efficiency while retaining the appearance and character of their original windows.

04

What are the signs that sash windows need restoring?

There are several common indicators that sash windows may benefit from professional restoration. These include windows that stick or are difficult to open, rattling sashes, noticeable draughts, broken sash cords, damaged putty, flaking paint, timber decay and signs of water ingress.

Older windows may also suffer from movement within the frame, causing them to operate poorly or fail to close properly. Addressing these issues early can prevent further deterioration and help avoid more extensive repairs or indeed full replacement in the future. A professional assessment can identify the underlying causes and recommend the most suitable restoration approach.

05

Can you restore windows in listed buildings and conservation areas?

Yes. Restoration is often the preferred solution for listed buildings and properties located within conservation areas because it helps preserve original architectural features while improving window performance. Many local planning authorities favour repair and restoration over replacement wherever practical.

Specialist restoration techniques can address common problems such as timber decay, draughts and operational issues while maintaining the appearance and historic character of the original windows. This makes restoration a popular choice for owners of heritage and period properties throughout Cambridge.

06

Will restored sash windows help reduce outside noise?

Restored sash windows can help reduce noise intrusion, particularly when combined with modern draught-proofing systems and secondary glazing. Gaps around poorly fitting sashes often allow both air and sound to enter a property, so addressing these issues can contribute to a quieter indoor environment.

Secondary glazing is particularly effective for homes located near busy Cambridge roads, town centres or other sources of external noise. It can provide additional acoustic insulation while preserving the appearance of original timber windows, making it a popular solution for many period properties.

07

Can rotten timber windows in my Cambridge home be repaired?

In many cases, yes. Localised timber decay does not automatically mean a window requires replacement. Specialist repair techniques can often remove damaged sections of timber and replace them with carefully matched repairs that restore the strength and appearance of the window.

A thorough survey can determine the extent of any deterioration and whether repair is a viable option. For many homeowners, timber repairs provide a cost-effective way to retain original windows while addressing structural and aesthetic concerns.

08

How can I retain the character of my Cambridge a period property?

Sash window restoration offers numerous benefits for owners of period and heritage properties. It helps preserve original architectural details, maintains the character of the building and can improve comfort, security and energy efficiency without the need for complete replacement.

Restoration is also a more sustainable option than replacing serviceable windows, as it retains existing materials and reduces waste. For many homeowners, it represents the ideal balance between preserving traditional craftsmanship and modern technologies for day-to-day performance improvement of their windows.