PVC-U market share drops to 39% in London

PVC-U remains the cornerstone of the UK window and door market, but new Tommy Trinder data reveals a growing regional divide.

Analysis of more than one million items quoted by over 700 installers that use Tommy Trinder for their quoting, shows that 79% of installed items in the UK are PVC-U, with 61% of the market by value still held by the material.

However, the headline story is the growing regional divide. Nowhere is this clearer than in the capital: PVC-U’s market share in London has dropped to 39%, down from 48% in 2022, as aluminium continues to dominate higher-end urban and architectural projects.

Outside London and the Home Counties, PVC-U remains dominant, reaching as high as 90% market share in some regions.

At the premium end, market share for flush casements has been declining in value terms as price pressures start to bite.

CEO of Tommy Trinder, Chris Brunsdon, commented: “As more installers began offering flush, competition increased, and we saw prices starting to drop.

“While the volume of flush sash quoted has remained stable, the overall share in terms of value has dipped – from 21% in 2022 to 16% now. Basically, flush casements have moved from being a high-margin niche, to becoming part of an installers staple offering.”

The report also highlights continued demand for colour, with 35% of PVC-U windows now foiled, and 63% of flush products specified in foiled finishes.

Chris adds that the demand for Tommy Trinder’s software remains strong, meanwhile; more than 230 installation firms switched to using the platform for their quoting in 2025.

He commented: “The ability to present complex products ranges quickly and easily has never been more important, and with growing diversity of materials the ability combine PVC-U, aluminium, timber and steel from multiple fabricators in one seamless presentation has become pretty much vital.”