Undercoat mesh OEM 10040886 fiber 145 – undercoat reinforcing mesh for surface preparation

Undercoat mesh OEM 10040886 fiber 145 is a reinforcing mesh designed for undercoat and surface preparation. Manufactured from a stable fiber material, the mesh provides reinforcement for plaster, render and leveling compounds. It helps reduce the risk of cracking, improves adhesion between layers and supports long-term dimensional stability of interior and exterior surfaces during renovation or construction.

Advantages

The fiber-based design offers consistent tensile strength and dimensional stability, ensuring even distribution of stresses across the treated surface. The mesh is easy to embed into undercoats and leveling compounds, enhancing mechanical keying and reducing shrinkage-related defects. Its structure supports reliable adhesion of subsequent finishing layers while minimising the need for repeated spot repairs.

Suitable for

• Reinforcement of undercoats beneath plaster and render
• Surface preparation before applying leveling compounds
• Interior and exterior wall renovations where crack prevention is required
• Repair work on uneven or marginally damaged substrates

Key specifications

• Material: fiber-based reinforcing mesh
• Function: undercoat reinforcement and surface stabilization
• Application areas: interior and exterior surfaces
• Compatibility: suitable for plaster, cement render and common leveling compounds
• Performance: reduces cracking and improves adhesion between layers

How to use

Ensure the substrate is clean, dry and free of loose material, dust or contaminants. Apply a base layer of undercoat or leveling compound at the recommended thickness and press the mesh into the wet material, smoothing out any wrinkles or trapped air. Cover the embedded mesh with an additional coat of undercoat or leveling compound so the mesh is fully encapsulated. Allow the system to cure according to the compound manufacturer’s instructions before sanding or applying finishing layers.

Usage recommendations

Use the mesh continuously across joints and transitions, overlapping adjacent strips as recommended by the system manufacturer to maintain continuous reinforcement. Match the type of leveling or plastering compound to the condition of the substrate and follow curing times to avoid premature loading or finishing.