Window Supply Company (WSC), based in West Lothian, is shaking up the social housing market with a powerful blend of innovation, experience, and strategic growth. Already one of Scotland’s fastest-growing producers of PVCu windows and doors, WSC has now set its sights firmly on the public sector—launching its ground-breaking Zero90 window system and welcoming new leadership to spearhead this expansion.

At the heart of WSC’s offering is the Zero90 system, an ultra-energy-efficient Liniar window solution designed specifically for the demands of social and affordable housing. With U-values as low as 0.8 W/m²K, Zero90 delivers exceptional thermal performance — helping housing associations and local authorities reduce energy consumption, cut carbon emissions, and protect tenants from rising fuel costs.

“There’s growing demand in the public sector for high-performance, low-carbon solutions,” says Duncan Murray, CEO of WSC. “Zero90 is a game-changer. It combines advanced insulation with long-term cost savings—helping landlords meet regulatory targets while improving tenants’ quality of life.”

To strengthen its position in this market, WSC has appointed two seasoned professionals to its leadership team. Kerry Mackie joins as Business Development Director, bringing deep experience in public sector partnerships and strategic delivery. Colin Joyce, the new Business Development Manager, offers a strong background in the housing sector and a track record of building trusted client relationships.

“This isn’t just about growth—it’s about impact,” says Kerry. “We want to be a true partner to housing providers. Our goal is to make sustainable, energy-efficient homes more accessible — without compromising on quality or service.”

Since its launch in 2019, WSC has grown into a national brand, with 11 trade counters across the UK and a reputation for reliability, technical excellence, and customer focus. With its investment in cutting-edge manufacturing and a commitment to sustainable innovation, the company is perfectly placed to support the evolving needs of the social housing sector.

As environmental regulations tighten and net-zero deadlines loom, WSC’s entry into the public sector — anchored by its Zero90 system and new leadership — marks a timely and ambitious leap forward.

Want to learn more about how WSC can support your housing projects?

Reach out to our team today:
Kerry Mackie – Kerry.mackie@windowsupplycompany.co.uk
Colin Joyce – Colin.joyce@windowsupplycompany.co.uk
Telephone: 01501 643 100