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Catnic Plasterer's Beads

Corrosion Protection

In normal circumstances, matured plaster work may be regarded as dry and therefore non-corrosive. Risks of corrosion in galvanised beads only normally become apparent during the initial plaster drying out period, which should be kept to a minimum, and subsequently during periods of heavy condensation. The use of sand or water contaminated with soluble salts in plastering mixes should be avoided as should soluble chlorides as they are likely to increase the risk of metal corrosion. The presence of sea salts in sand used in plastering which is in contact with galvanized beads will often cause rust staining and should therefore be avoided.

In external applications and, in conditions where heavy condensation, persistent damp or regular exposure to moisture are likely, stainless steel, PVCu or PVCu nosed beads should be specified.

In general, care should be taken to ensure that metal beads are kept dry and distortion is prevented during storage and handling. Care should also be taken to prevent mechanical damage to the galvanized coating. Stainless steel beads are for use specifically with cement based renders. Contact our Technical Services Department if considering the use of stainless steel beads with gypsum plaster, as stainless steel should not be used in conjunction with this product.


Galvanised steel to BS EN 10346:2009.
Stainless steel to BS EN 10088-2:2005 for external applications.


All metal beads comply with the British Standards.
Beads for internal plastering to BS EN 13658-1:2005 and for external rendering to BS EN 13658-2:2005.

Catnic Expanded Metal Lath & Metal Mesh

Material (Lath)

Galvanised steel to BS EN 10346:2009 for internal use. Stainless steel to BS EN 10088-2:2005 for external use and conditions of heavy condensation or persistent damp.

Specification (Lath)

Complies with BS EN 13658-1:2005 for Internal Plastering and BS EN 13658-2:2005 for external rendering.

Material (Mesh)

Galvanised steel to BS EN 10346:2009 for internal use. High quality stainless steel to BS EN 10088-2:2005 for external use.

Catnic Wall Ties


Manufactured from austenitic stainless steel wire and strip for proven corrosion resistance.

Catnic Wall Starter Kits

Stronghold wall starter kits provide a versatile yet effective system for tying new masonry walls to existing walls. The system is able to accommodate vertical movement without a significant loss of strength.

  • Adjustable ties for flexibility in coursing
  • Available in Stainless Steel, Galvanised Steel & Plastisol Coated Galvanised Steel
  • Universal application up to 250mm wall thickness
  • All necessary fixings available

Click the PDF image to view the technical information in full

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