3mm Thin Coat Angle Bead 2.4m

What is a 3mm Thin Coat Angle Bead 2.4m?

A 3mm Thin Coat Angle Bead 2.4m (often called a Skim Bead or Plasterboard Corner Bead) is a perforated metal profile used in drylining and plastering to form and reinforce external corners.   

It features a sharp, straight central arris (the corner point) and two perforated wings or flanges. This provides a precise, rigid 90-degree edge for the plasterer to work up to, ensuring perfectly straight and sharp corners.

Functions

• Reinforces Plaster: The bead strengthens the plaster at the corner, which is inherently weak and prone to damage without reinforcement.   
• Impact Protection: Protects the underlying plasterboard edge and the finished plaster corner from knocks, chips, and everyday wear and tear.
• Plaster Key: The perforations in the wings allow the skim plaster to push through and bond securely, integrating the bead into the finished surface.   
• 'Thin Coat' Specificity: The "3mm" designation indicates it's designed for use with thin final skim coats of plaster (like British Gypsum Multi-Finish or similar), typically applied at a 2-3mm total thickness over plasterboard. It is distinct from thicker beads used for traditional sand & cement render or backing plasters.

Applications

• Forming and reinforcing external 90-degree corners on plasterboard walls, partitions, and bulkheads (a lowered section or protrusion from a ceiling) before applying a final skim coat of plaster.
• Creating sharp, durable edges around window reveals and door openings constructed using plasterboard.
• Standard use in drylining systems across domestic, commercial, and public buildings for achieving professional results.

Benefits

• Produces Crisp, Professional Corners: Guarantees perfectly straight, sharp 90-degree external angles, essential for a high-end aesthetic finish.
• Strengthens Vulnerable Corners: Reinforces the skim plaster over the corner joint, dramatically reducing the likelihood of cracking or chipping due to minor impacts.   
• Protects Plasterboard Edges: Shields the exposed edge of the plasterboard at external corners from damage during construction and occupancy.   
• Ensures Excellent Plaster Bond: Perforated wings provide a strong mechanical key, ensuring the skim coat adheres securely to both the bead and the background.   
• Optimised for Skim Plastering: Designed specifically for the shallow depth of modern thin-coat plaster systems over plasterboard.   
• Efficient Installation: Lightweight, easily cut to size with tin snips, and can be fixed rapidly using standard methods (plaster dabs or mechanical fixings).
• Cost-Effective Durability: An inexpensive component that significantly enhances the durability and quality of the finished plasterwork, saving on potential future repairs.