Trusted by generations of building and construction professionals
EXPAMET
ESTABLISHED QUALITY 

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

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BUILDERS METALWORK
BUILDING INDUSTRY EXPERTISE SINCE 1889

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

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PLASTERERS ACCESSORIES
BUILDING INDUSTRY EXPERTISE SINCE 1889

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

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Technical Support

Icon Caret Product Attributes

Brand Powertie
Generic Ref SBSF
Product Range Wall Ties
Product Sub-range Bed Joint Reinforcement
Product Type Structural Ladder Reinforcement
European Standard/ETA BS EN845-3:2013+A1:2016
Test Standard BS EN846-2:2000
Notified Body Lucideon Ltd (NB 1289)
Material Stainless Steel 1.4301 to BS EN10088-3:2014
Coating/Finish/Colour Mill Finish
Length 1/Projection 2700mm
Length 2/height 5.5mm
Plaster/Render/Joist depth 10-12mm Bed Joint Thickness
Fire Rating Euroclass A1
Installation requirement 1 Ladder must be bedded and covered in fresh mortar before laying course above
Installation requirement 2 Lap ends by 225mm
Installation requirement 3 Ensure reinforcement is central in mortar bed with 20mm cover each side
Installation requirement 4 Stagger lap joints vertically in wall construction
Sales Qty 20
Packaging weight 0
Features/Benefits 1 Colour coded for easy identification of gauge
Features/Benefits 2 Stainless Steel for use in external walls
Features/Benefits 3 Flattened wire to maintain cover in bed joint
Features/Benefits 4 Increases lateral stength of masonry and increases distance between movement joints
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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.