Our Promise

Our Promise - Ventrolla the Sash Window Company
OUR promise
Our success over the last 35 years is built on customer recommendations and our reputation for outstanding quality. All our work comes with a 5 year guarantee and we also promise to treat you like we would want to be treated.


For over 35 years, we’ve been helping clients restore the beautiful period charm of their sash windows. Our industry-leading repair and renovation techniques help to eliminate rattles, draughts, leaks and noise problems allowing you to retain the value and exquisite looks of your sash windows.

Give you expert and unbiased advice

Our aim is to leave you feeling delighted and with a draught free, comfortable home. We do that by giving you honest guidance based on over 30 years of experience.

Leave you alone to consider your itemised quote

At the end of the survey you will be given a quote which will detail each window and the works we propose. We will explain the quote and then leave it with you – no pressure tactics.

Keep your home weather tight and secure

If your work is scheduled to take several days (we typically renovate 1 window per day) then at the end of each day your home will be left weather tight and secure.

Return your home to the clean state we found it in

Our Installers will take every care to ensure your home stays as clean and tidy as they find it. Dust sheets will cover any furnishings in the room they are working in and all tools have dust extraction devices. The Installers will lay down sheets to protect your carpets and cover their shoes, if requested (Installers must wear safety shoes on site at all times).

Enjoy a good cup of tea, if offered!

Our Surveyors and Installers are a friendly bunch that enjoy nothing more than explaining the work they do – and they have never been known to turn down a cup of tea if offered.


Spend all day in your home pressuring you to buy

We typically allocate 1 hour for a survey which should allow plenty of time for an investigation of all your windows and to talk through the process. We won’t be in your home all day with a rehearsed sales pitch.

Sell you a more expensive product if you don’t need it

At Ventrolla we really do care about preserving the heritage and charm of period sash windows and we will never sell you a product that you don’t need. Where possible, and unless requested otherwise, we will always suggest renovation over replacement.

Bombard you with calls and emails 

Once you’ve had the survey and we know you have received your quote we will leave you in peace to consider your options, we won’t bombard you with calls and emails as we believe our service and quality workmanship speaks for itself. If you have any questions for us, however, please be sure to get in touch!

Sell your data to a 3rd party 

Ventrolla complies with all UK data laws and policies which means that your personal data will never be shared with a 3rd party without your express consent (we sometimes ask customers to act as referrals for new customers) and we will certainly never sell your data.

IT ALL BEGINS WITH A free, no obligation, SURVEY

It’s a very simple process to get your windows just how you want them & the initial stage is a free, no obligation, survey with one of our friendly experts.
It takes up very little of your time and is a no pressure, no hassle, no commitment way for us to give you a tailored quote for work.

To help us move on with your enquiry quickly & thoroughly please answer the following questions:

"From day one we were contacted by administration regularly to keep us informed and when the windows were fitted the team were friendly, courteous and thoroughly professional. We are more than happy with the finished results, we now have beautifully crafted windows which are appropriate to the period our home."