Ventrolla, a specialist in heritage restoration and renovation of timber sash and casement windows, has announced significant growth in 2025, marked by a substantial business transformation programme, record sales and a headline brand repositioning.

According to Ventrolla, business ‘boomed’ throughout the year, with over 1,000 projects delivered and 10,000 windows repaired or replaced in 2025, covering some of the most iconic heritage sites in the UK.

This included single residential projects through to larger commercial opportunities consisting of over 100 windows per project, covering the education, health and hospitality sectors. The year also ended with 70% year-on-year growth in sales orders and enhanced EBITDA, making 2025 the most successful year in the business’ history and placing it ahead of market averages for the sector.

Large scale operational investment was made within Ventrolla, which included the acquisition of a new staircase business in November to compliment the expertise already offered and key internal promotions and hires including a technical director, operations director and a new commercial sales director.

In addition to the above, 2025 kicked off with a rebrand focusing on the heritage sector, designed to spearhead the growth and future direction of the business. This kickstarted several initiatives to lead the industry, including partnerships with the likes of the British Woodworking Federation and a Knowledge Transfer Partnership project with the University of Leeds.

The business also launched a series of industry roundtables, championing a more aligned approach to guidance, the modernisation of properties and overall heritage excellence.

Mark Flanagan, managing director at Ventrolla, said: “2025 has truly been a landmark year for the business, from sales and operational achievements to helping lead the sector with our roundtable series. It has been fantastic liaising and speaking to other experts within the heritage industry, bringing to light the issues we are facing such as the skills shortage and lack of joined up approach to guidance. We are very proud to be leading the way with these roundtables, with more planned in 2026.

“Throughout the year we also successfully restructured and developed the leadership team to ensure the ongoing success of the business, separating commercial and residential teams to enhance specialisations. We also launched new arms of the business, including Ventrolla Consult, to help develop our services in the restoration of heritage and listed properties. I’m very excited to see what 2026 brings for Ventrolla, with a focus on further growth and focused investment. Last year will certainly be a hard one to beat.”