Trusted by generations of building and construction professionals

Expamet encompasses a wide range of products designed and manufactured in Britain and trusted by generations of construction professionals.

Windpost Quotes
Available Here 

Windposts are designed to offer an alternative, cost-effective method of providing the additional stiffness that a masonry wall requires as specified by the Structural Engineer.

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A wide range of straps, fixings, angles and brackets, wall starters, ties and reinforcement


Arch formers and accessories, plus beads in coated or galvanized metal, stainless steel and uPVC


Masonry Support Design Service

Masonry Support
Design Services 

BAT Masonry Support is a range of bespoke systems designed to carry masonry cladding on steel or concrete structures.

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Quality & Environmental Policy and Objectives Statement


Birtley Group Ltd, Hartlepool Site, quality & environmental Policy is to provide our customers and other interested parties with products and services that consistently satisfy their requirements and expectations.

The management team of Birtley Group Ltd, Hartlepool Site, are fully committed to the development, maintenance and continual improvement of the quality & environmental management system. The adaptation of risk based thinking and a process approach shall be taken when developing, maintaining and improving the quality and environmental integrated management system.

Successful implementation of this policy requires the commitment from all employees to make it work and processes that intuitively make sense. All employees are expected to take responsibility for the quality and environmental impacts of their own work and encouraged to actively contribute to the continual improvement of our standards, processes, product delivery and service. The requirements of the quality and environmental management system are mandatory and failure of employees and sub-contractors to comply with these requirements may result in disciplinary or other remedial action being taken by the Company.

The objectives of the quality & environmental management system are:

  • To achieve and maintain a level of quality and customer satisfaction that we are proud to be associated with.
  • To ensure compliance with all relevant legal & statutory regulations.
  • To develop a company culture in which all employees actively contribute to improving the quality and environmental impacts of the products and services provided by Birtley Group, Hartlepool Site
  • To maintain an integrated quality and environmental management system that complies with International Standards ISO 9001 and ISO 14001 and is continually improved.
  • To reduce the generation of waste
  • To promote and facilitate the usage of recycled products and materials
  • To avoid excessive energy consumption
  • To prevent any form of environmental pollution relevant to the context of our business operations


A series of Key Performance Indicators (KPI’s) shall be developed by the management team and shall be supported by improvement plans and initiatives which are regularly reviewed to ensure that appropriate quality objectives are established and met.

Part of the Birtley Group

Birtley began life as Birtley Building Products in 1965, based at the current site in County Durham. Originally a steel fabricator for the area’s mining and power generation industries, the company made its first steel lintels in 1967. Since then, Birtley has grown from reliable local supplier to a UK-wide force in construction design technology and product development.

In 1889, the British Metal Expansion Company was established in Hartlepool. It had sole European rights for the manufacture of expanded metal mesh, mainly for use as reinforcement and lath in the rapidly expanding sector of concrete construction. The business that grew from these early days later changed its name to Expamet.

Acquired by Birtley Group in 2015, Bowater Doors is a nationally-known name synonymous with top quality and imaginative composite residential door design and manufacture.

The product portfolio offers exclusive ranges for trade installers and a retail range providing doors direct to consumer and social housing organisations.

Birtley Galvanizing boasts one of the most impressive galvanizing plants in Europe. The plant achieves the finest quality hot-dip galvanized zinc protective coatings to BS EN ISO 1461. Using state-of-the-art technology the plant processes steel products using a computer controlled, automated handling system, enabling Birtley Galvanizing to provide full project solutions to many industries.