Galvanizing and metal finishing services

Our Products

12 Products Found

Product Wall Construction Outer Leaf (mm) Cavity (mm) Inner Leaf (mm) Wall Width (mm) Loading Condition
ST90 Supatherm Lintels 100mm Outer Leaf 90-105 Cavity 100mm Inner Leaf Standard Duty
ST110 Supatherm Lintels 100mm Outer Leaf 110-125 Cavity 100mm Inner Leaf Standard Duty
ST130 Supatherm Lintels 100mm Outer Leaf 130-145 Cavity 100mm Inner Leaf Standard Duty
ST150 Supatherm Lintels 100mm Outer Leaf 150-165 Cavity 100mm Inner Leaf Standard Duty
ST90HD Supatherm Lintels 100mm Outer Leaf 90-105 Cavity 100mm Inner Leaf Heavy Duty
ST110HD Supatherm Lintels 100mm Outer Leaf 110-125 Cavity 100mm Inner Leaf Heavy Duty
ST130HD Supatherm Lintels 100mm Outer Leaf 130-145 Cavity 100mm Inner Leaf Heavy Duty
ST150HD Supatherm Lintels 100mm Outer Leaf 150-165 Cavity 100mm Inner Leaf Heavy Duty
ST90HDX Supatherm Lintels 100mm Outer Leaf 90-105 Cavity 100mm Inner Leaf Extra Heavy Duty
ST110HDX Supatherm Lintels 100mm Outer Leaf 110-125 Cavity 100mm Inner Leaf Extra Heavy Duty
ST130HDX Supatherm Lintels 100mm Outer Leaf 130-145 Cavity 100mm Inner Leaf Extra Heavy Duty
ST150HDX Supatherm Lintels 100mm Outer Leaf 130-145 Cavity 100mm Inner Leaf Extra Heavy Duty

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.