Founded in 1985, the cladding group employs over 125 staff and comprises operating companies English Architectural Glazing (EAG) and Multifab.
It operates from three sites in Attleborough (Norfolk), Mildenhall (Suffolk) and Cannock (Staffordshire) providing packages for clients including Stanhope, Kier, BAM and Skanska.
The specialist delivered a pre-tax profit of £2m last year on revenue down 28% to £18m.
The fall came from the loss of a £10m contract with Berkeley Homes after the house builder changed the specification for its West End Gate London apartment block seeing the job awarded to another firm.
With new owners, EAG will expand its pre-construction operations to bid more and larger project opportunities.
Simon Gladwin, managing director of EAG, who head up an MBO in 2005, said: “This is an exciting day for EAG, as we look to build the future and increase our client base.
“We are excited about working with Elaghmore, whose financial backing and operational expertise will help us to expand the business and capture the growing market demand for our products and services.”
EAG is the eighth-acquisition made by Elaghmore from its private equity fund.
Last year Elaghmore bought Irish glass installation specialist Alucraft in a deal thought to be worth €10m, with plans to expand in the UK.