GB Joinery, a leading manufacturer of premium timber windows and doors, has achieved U-Values as low as 1.2 W/m²K for its windows through ER Certification Ltd.
With growing demand for energy-efficient solutions, GB Joinery’s flush casement windows can now achieve a U-Value of 1.2, its Stormproof casement windows 1.3, and its sliding sash windows can deliver a U-Value of 1.4.
The certification further cements GB Joinery’s position as a market-leading choice for installers who want to offer their customers a compelling timber product that provides the very best in energy efficiency.
Lee Parrott, Managing Director of GB Joinery, said: “Achieving these U-values is a significant milestone for GB Joinery. We’re proud to offer our trade customers exceptionally crafted timber windows that not only meet but exceed the energy efficiency demands of today’s market.
“For installers, this translates into a product that can meet contemporary expectations while retaining the traditional beauty of genuine timber that discerning homeowners want.
The improvements come as part of GB Joinery’s ongoing commitment to providing premium, energy-efficient products made from sustainable, high-performance Accoya timber, known for its superior strength and durability.
With lead times of just 4-6 weeks, GB Joinery ensures installers can rely on fast delivery while offering expert support and training – making them perfect for installers already working with timber and those looking to add it to their product offering.
“With the industry’s heightened focus on energy performance, our timber windows provide installers with an excellent opportunity to offer homeowners excellent thermal insulation and lower energy bills and win new business,” added Lee.
