Insight Data report reveals UK fenestration sector shifts

The UK fenestration sector continues to stand its ground, though it’s clear the industry is undergoing a thorough transformation, according to new report from Insight Data.

The market intelligence firm’s 2026 Industry Report tracks 13,402 fabricator and installer businesses across the country, showing notable stability with a modest 1.1 per cent drop from 13,551 firms in 2023, alongside an 11.2 per cent contraction over nine years from 15,099 in 2017.

The report is now available to download from Insight Data’s website by visiting www.insightdata.co.uk/resources/downloads/.

Beneath this headline stability, individual segments show distinct movement. uPVC fabricators fell by 7.35 per cent over the last three years to 1,083, whilst aluminium fabricators decreased by 3.98 per cent to 867.

Meanwhile, installation firms proved remarkably resilient, dipping by just 0.28 per cent to 11,756 active businesses. Insulated glass unit manufacturers saw numbers ease from 680 down to 647.

Andrew Scott, Founder and CEO of Insight Data, commented: “When you look past the headlines, the industry is shifting beneath our feet. People are telling us how hard it is to keep track of who is actually buying right now.

“If you are relying on old contact lists or guesswork, you are bound to fall behind. We talk to businesses every single day that want real growth, but they need accurate, live data to know where to knock on doors. That is exactly what we fix.”

To help companies navigate this shifting terrain, Insight Data says it cuts through the noise with intelligence driven by more than 20,000 telephone verification calls every month.

By uniting a continually updated database with the power of Salestracker, the company equips commercial teams with deep business intelligence, financial checks and live lead tracking.

This means suppliers can zero in on active trade and commercial customers by region, size and product focus, ensuring every sales call lands on fertile ground.

Explore the full 2026 Industry Report findings at: www.insightdata.co.uk