Brett Martin to Invest £15m in Mallusk Manufacturing Site

16 June 2025

Brett Martin to Invest £15m in Mallusk Manufacturing Site|Andrew Martin, Group Director at Brett Martin

BRETT MARTIN, the manufacturer of plastic construction materials, has announced it will invest £15 million in its Mallusk manufacturing site.

The expansion marks the largest single investment in the company’s history.

The investment will nearly double the production footprint of Brett Martin’s Plumbing and Drainage facility, adding 25,000 sq. ft of manufacturing space. To support the site expansion, an additional 70,000 sq. ft of warehousing has also been constructed.

With over half of the company’s total workforce working at the Mallusk site, the company says this new investment plays a ‘vital role’ in further elevating its position within the sector.

£15m Investment

Phase one of the expansion, commencing this year, includes new injection moulding with specialist automated solutions, facilitating enhanced efficiency and output of drainage fittings.

Brett Martin’s plumbing and drainage systems, widely used in housebuilding and general construction, are distributed exclusively through builders’ merchants.

Andrew Martin, Group Director at Brett Martin headshot

Andrew Martin, Group Director at Brett Martin

Andrew Martin, Group Director at Brett Martin, said: “We are delighted to announce the expansion in manufacturing capacity in Mallusk. This latest investment plan comes off the back of continual sales growth in Brett Martin’s UK and Irish markets. We operate in a highly competitive market where manufacturing efficiency is essential for our continued growth.

“This expansion is designed to consolidate our past achievements while equipping us with competitive production capabilities to support our ambitious growth plans in the years ahead. While our focus remains on the UK and Irish markets, the ongoing housing shortage across the UK presents a significant opportunity for continued development.”

Brett Martin says it aims to increase volume output by 30% over the coming years.

With a workforce topping 1,000 and sales of £220 million, the privately-owned Brett Martin is one of Europe’s largest plastic sheet producers. The manufacturer has completed a wide range of Premier League club projects, providing advanced roofing systems to major UK football stadiums, including Wembley, Emirates, and Everton’s new Bramley Moore Dock.

>> Read more about Brett Martin in the news

Share article

Sign Up to
Roofing Today

Stay up to date with all of the latest news from Roofing Today by signing up to our weekly Bulletins…

 

Check out the latest issue

126 September-October 2026