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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

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

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Timber Windows

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

Timber Doors

Manufactured in our bespoke joinery houses.

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Give your heritage building the craftsmanship it deserves.

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brochure

Request a Brochure

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

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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

The Cotswolds

Sash Window Repair and Timber Window Restoration in the Cotswolds

The Cotswolds is one of Britain’s most photographed places – and one of its most tightly protected. From Chipping Campden to Bourton-on-the-Water, every village reads like a set-dresser’s dream with beautiful limestone, mullioned stone windows and small-paned sashes. For more than 40 years, Ventrolla has been restoring the timber windows and doors in these buildings, preserving the rural aesthetic that makes the Cotswolds an Area of Outstanding Natural Beauty.

Sash Window Repair and Timber Window Restoration in the Cotswolds

Why choose Ventrolla for your windows and doors in Cotswolds

British Craftsmanship

British Craftsmanship

Every window handcrafted by our master joiners.

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 Cotswolds window restoration work

Before

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After

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From chocolate box village cottage windows to small-pane Georgian sash restoration in village townhouses – our gallery shows residential and commercial restoration at its most faithful.

Before

Before Image

After

After Image

From chocolate box village cottage windows to small-pane Georgian sash restoration in village townhouses – our gallery shows residential and commercial restoration at its most faithful.

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Before

Before Image

After

After Image

From chocolate box village cottage windows to small-pane Georgian sash restoration in village townhouses – our gallery shows residential and commercial restoration at its most faithful.

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Trusted by many

Ventrolla in your words

Excellent

Star rating
Trustpilot
Star rating

Excellent

We would highly recommend Ventrolla. From Russell’s initial visit to the completed installation by the brilliant Dave and James, and everything Zoey handled in between, the job was managed efficiently and finished to the highest standard. Everyone involved was also very understanding of our particular needs as a young family with a newborn baby, making every effort to ensure things were as easy and comfortable for us as possible.

E Lybeck

Star rating

Many thanks to Ventrolla for helping us

Many thanks to Ventrolla for helping us to deal with Conservation and Planning requests in a patient and informative manner. You went the extra mile to assist our paperwork seeking approval. Once this was granted, we got a date for the actual work and Andy S, Scott and Paul turned up on site to replace and repair our large windows over the course of a week. These guys are polite, and thorough and they know their jobs! Everything was executed in a calm and professional manner and the inside and outside of the house was pristine after they left. Thanks for helping to make a potentially stressful time as calm and short lived as possible. It was appreciated and now we get more light and less breeze through our lovely looking windows!

Gerard Egan

Star rating

Totally professional team

Rob,James and Tyler were a great team in every way. They were punctual, polite, considerate, went out of their way to be helpful. Most importantly their workmanship was excellent. I felt they really took pride in their work and went the extra mile to do the best job they could. I couldn’t really have asked for better.

Margaret Noakes

Heritage window specialists for period homes across the Cotswolds

The Cotswolds is one of the most tightly protected landscapes in the UK, and that protection runs right down to the window profile. Our surveyors know the specific requirements that apply here – like-for-like matching, restricted materials and finishes, conservation-area constraints.

Our Ventrolla Consult service supports listed-building and conservation planning applications from the earliest stage, so you know exactly where you stand before work begins.

Your neighbours trust us too

We’ve been in your neighbourhood

Our Cotswolds team restores heritage windows across Chipping Campden, Stow-on-the-Wold, Bourton-on-the-Water, Burford, Broadway, Moreton-in-Marsh, Cirencester, Tetbury, Painswick and Bibury – as well as in smaller villages and farmsteads throughout Gloucestershire, Oxfordshire and Warwickshire.

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our promise

upto

10 years

Manufacturing guarantee

upto

20 years

Window glazing guarantee

Upto

10 years

Paintwork finish guarantee

upto

30 years

Rot and decay guarantee

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About The Cotswolds’ architecture

Cotswold windows are defined by restraint. Small-paned sashes, stone mullions, leaded lights and timber casements sit flush within thick limestone walls. The problems that come with age: rotted cills, perished cords, draughty meeting rails, and paint built up over generations.

Our restoration approach is to preserve what’s original. The award-winning Ventrolla Perimeter Sealing System (VPSS™) delivers effective draught-proofing with no visual trace. Where joinery can’t be saved, we replicate the exact profile in new timber with up to 30% energy efficiency and noise reduction. The goal is simple: a window that looks as though nothing has changed, but performs as if it were new.

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accreditations

Complimentary window survey in the Cotswolds

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.

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Frequently asked questions

01

Can Ventrolla restore windows in traditional Cotswold stone cottages?

Yes. Ventrolla specialises in restoring original timber sash and casement windows found in traditional Cotswold cottages, farmhouses and period homes. Our restoration-first approach helps preserve the unique character and charm of historic properties while improving functionality, comfort and energy efficiency.

02

Why is window restoration particularly important for Cotswold period properties?

Many Cotswold homes derive much of their appeal from original architectural features, including traditional timber windows. Replacing these features can alter the character of a property, whereas professional restoration helps retain authenticity while addressing common issues such as draughts, rattles and operational difficulties.

03

Do you work on heritage homes and historic properties throughout the Cotswolds?

Absolutely. Our experienced craftsmen regularly work on a wide variety of historic properties throughout the Cotswolds, including Georgian townhouses, listed cottages, country homes, manor houses and period farmhouses. We understand the importance of preserving traditional features while delivering practical performance improvements.

04

How can I improve the comfort of my period home without losing its original character?

Ventrolla offers a range of discreet restoration solutions designed specifically for heritage properties. Through timber repairs, sash window refurbishment, draught-proofing, secondary glazing and our proprietary Ventrolla Perimeter Sealing System (VPSS), we can help improve comfort levels while maintaining the appearance of your original windows in your Cotswolds period home.

05

Are sash window repairs suitable for listed buildings in the Cotswolds?

In many cases, restoration is often the preferred option for listed buildings because it retains original materials and historic detailing. Ventrolla has extensive experience working on period and listed properties, helping homeowners preserve the architectural integrity that makes Cotswold homes so distinctive.

06

Can restoration help protect timber windows from the Cotswolds' changing weather conditions?

Yes. Timber windows are exposed to seasonal weather variations throughout the Cotswolds, including moisture, wind, temperature fluctuations and UV exposure. Professional restoration and maintenance can help address existing deterioration and improve long-term resilience, helping to extend the lifespan of original timber windows.

07

What are the most common problems you see with older windows in the Cotswolds?

Many homeowners contact us regarding draughty sash windows, sticking frames, rattling sashes, worn cords, timber decay, poor insulation and windows that have become difficult to operate over time. Our specialist survey process identifies the underlying causes and recommends the most appropriate restoration solution.

08

Can you improve insulation in historic windows without replacing them?

Yes. One of the key benefits of professional sash window restoration is the ability to enhance thermal performance while retaining original features. Solutions such as VPSS draught-proofing, glazing upgrades and secondary glazing can help improve insulation and reduce heat loss without compromising the property’s traditional appearance.

09

Why do homeowners in the Cotswolds choose timber window restoration instead of modern replacement windows?

Many property owners value the craftsmanship, proportions and detailing found in original timber windows. Restoration allows these historic features to be preserved while improving usability and performance. For many period properties, retaining original windows also helps safeguard the character and heritage that make Cotswold homes highly desirable.

10

What makes Ventrolla a trusted choice for window restoration in the Cotswolds?

With over 40 years of experience and more than one million timber windows restored across the UK, Ventrolla is recognised as a leading specialist in heritage window restoration. Our skilled craftsmen combine traditional techniques with innovative systems such as VPSS to help homeowners throughout the Cotswolds preserve the beauty, authenticity and long-term value of their period properties.