Professional Wall Starter System for Masonry Extension – Up to 8m / 3 Storeys
The Simpson Strong-Tie C2KS Crocodile Wall Starter Kit is the UK’s most popular wall extension system, engineered for high-performance masonry-to-masonry connections. Suitable for both brick and block construction, this BBA-approved system offers reliable lateral support for new walls up to 8 metres high (3 storeys). Ideal for both internal and external applications.
Packaged as a complete system, the C2KS includes all necessary stainless steel profiles, ties, and fixings for straightforward installation and long-term durability.
Key Features
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BBA Approved Performance
Certified for use in structural masonry up to 8m or 3 storeys, ensuring compliance with building regulations and structural standards. -
Accommodates 10mm Vertical Movement
Allows natural settlement or thermal movement between the new and existing walls, helping prevent cracking or structural stress. -
Flexible Anchor Tie Placement
Adjustable anchor ties cater to variations in brick course heights, maintaining consistent strength across installations. -
Complete Kit for Quick Installation
All required components, including fixings and ties, are supplied in one package for contractor convenience and rapid deployment. -
Suitable for Brick & Block Work
Versatile design supports a wide range of wall types, including cavity, solid, and block construction.
Material & Specification
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Material: Austenitic stainless steel (corrosion-resistant and suitable for external environments)
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Connector Width: 33mm
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Total Length (combined): 2236mm (2 x 1.2m profiles)
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Compatible Wall Thickness: 60mm – 250mm
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Vertical Movement Capability: Up to 10mm
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Number of Fixings: 6
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Pack Size: 1 full kit
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Brand: Simpson Strong-Tie
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Part Number: C2KS
Common Applications
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Masonry wall extensions (brick or block)
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New wall connections in home extensions, refurbishments, and cavity wall tie-ins
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Load-bearing or non-load-bearing wall junctions
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Suitable for damp or exposed external conditions due to stainless steel construction
Installation Notes
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Use all included fasteners, spaced evenly unless stated otherwise
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Fix directly into brick or block, not mortar joints
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Bed wall ties into mortar at maximum 300mm centres
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Detailed site instructions are included with each kit
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For exposed environments, consider adding a vertical DPC for additional moisture protection











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