The latest 2025 Fenestration Market Overview from Insight Data provides a detailed picture of a sector undergoing structural change. The report highlights a continued decline in the number of fabricators and installation firms, with consolidation reshaping the competitive landscape. While this reflects economic pressures, it also points to emerging opportunities for those able to adapt.
Industry Contraction Creates Space for Growth
In 2025, the number of installation firms has dropped to 11,650, down from 12,209 in 2021 and over 13,000 in 2017. PVCu fabricators have fallen from 1,327 in 2019 to 1,132, while bifold door specialists in particular have declined sharply—from 518 in 2019 to just 283.
Despite this contraction, the UK glazing market remains a multi-billion-pound industry, with demand driven by:
- Energy efficiency regulations
- Government support for retrofit projects
- Gradual recovery in the new-build sector
The decline in active companies creates the potential for ambitious businesses to capture increased market share—provided they invest in operational efficiency and customer experience.
Operational Efficiency as a Differentiator
A notable trend is the dominance of smaller installation firms. The majority continue to operate at low volumes: over 85% are installing fewer than 100 frames per week. While this reflects the nature of localised retail businesses, it also exposes challenges in scalability, time management, and lead handling.
In this context, tools like GlazingBot (https://Glazing-Bot.com) which provides 24/7 automated lead capture and product information via a website chatbot—can help bridge the gap between limited internal resources and rising customer expectations. As enquiry volumes fluctuate, consistent responsiveness becomes a competitive advantage.
Technology Adoption Lagging Behind Market Needs
The report highlights an environment where efficiency and responsiveness will be critical. With declining installer numbers and growing consumer focus on energy performance, the ability to communicate clearly, quote quickly, and follow up effectively is more important than ever.
GlazePro AI (https://thinkivity/GlazePro-AI) has been developed in response to these pressures. As a membership-based resource, it provides practical training, AI tools, and automation strategies tailored to window and door businesses. The aim is not simply to introduce new technology, but to integrate it into real-world workflows—reducing admin time and improving lead conversion in a tight market.
Product Trends Reinforce the Shift to Premium
The report also notes steady growth in aluminium products, particularly in bifold and sliding doors. Aluminium fabricators have increased from 872 in 2019 to 901 in 2025, with more companies now specialising in higher-end systems. This trend reflects consumer appetite for design-led home improvements, especially in the retrofit space.
Installers looking to align with this trend will need quoting systems, sales copy, and marketing assets that reflect the premium nature of the products being offered. Here too, digital tools and AI can play a supporting role in enhancing perceived value.
Conclusion
The 2025 fenestration data confirms a market in transition—leaner, more efficiency-driven, and increasingly reliant on digital engagement. For installers and fabricators who respond with clarity, consistency, and operational discipline, the current conditions offer a platform for long-term growth.
GlazePro AI exists to support that response—helping businesses reduce manual overheads, improve customer experience, and remain commercially resilient.
You can get the report here; https://www.insightdata.co.uk/resources/reports/#:~:text=The%20Insight%20Data%202025%20overview,markets%2C%20products%2C%20and%20trends.
