Mapegrid G120 Alkali-Resistant Glass Fibre Mesh 1m x 50m

Mapei Mapegrid G 120 – Alkali-Resistant Glass Fibre Mesh for Masonry Strengthening

Mapei Mapegrid G 120 is a pre-primed, alkali-resistant (A.R.) glass fibre mesh designed for localised structural strengthening of masonry substrates. Used in combination with Mapei Planitop HDM Maxi or Planitop HDM Restauro, it helps distribute stresses more evenly across reinforced surfaces and improves the mechanical performance of masonry strengthening systems.

Manufactured using alkali-resistant glass fibres with a zirconia content of 17%, Mapegrid G 120 has a weight of 125g/m² and a tensile strength of at least 30kN/m. Its flexible mesh construction allows it to be cut and adapted to the shape of the substrate during installation.

Mapegrid G 120 is suitable for localised reinforcement of masonry walls and for applications involving the connection of non-structural walls to reinforced concrete frames. It can also be used in strengthening systems designed to help reduce the risk of localised collapse.

Key Benefits

• Alkali-resistant reinforcement: Manufactured from A.R. glass fibres with 17% zirconia content.
• High tensile strength: Tensile strength of at least 30kN/m.
• Pre-primed mesh: Designed for use within compatible Mapei structural strengthening systems.
• Improved stress distribution: Helps distribute stresses more evenly across reinforced masonry surfaces.
• Flexible and easy to handle: Can be cut and adapted to suit the shape of the substrate.
• Compatible mortar systems: Designed for use with Planitop HDM Maxi and Planitop HDM Restauro.

Technical Information

• Product type: Pre-primed alkali-resistant glass fibre mesh.
• Fibre type: A.R. glass fibre.
• Zirconia content: 17%.
• Weight: 125g/m².
• Mesh size: 10.5 x 11.5mm (±2%), according to the current Mapei technical data sheet.
• Tensile strength: At least 30kN/m.
• Modulus of elasticity: 72GPa.
• Elongation at failure: 1.8%.
• Compatible mortars: Planitop HDM Maxi and Planitop HDM Restauro.
• Available roll sizes: 25m x 45cm and 50m x 1m, subject to product availability.

Applications

Mapei Mapegrid G 120 is used as part of compatible reinforced strengthening systems for masonry and related construction applications, including:

• Localised strengthening of masonry walls.
• Reinforcement of cracked or vulnerable masonry areas.
• Connection of non-structural partition and infill walls to reinforced concrete beams and columns.
• Reinforcement systems intended to help prevent localised out-of-plane collapse.
• Strengthening interventions designed to improve the distribution of stresses across masonry elements.

Installation and System Compatibility

Mapegrid G 120 is installed in conjunction with compatible Mapei strengthening mortars, including Planitop HDM Maxi and Planitop HDM Restauro. The mesh is embedded into the freshly applied mortar and pressed into position to ensure good contact with the mortar layer.

Substrate preparation, mortar application thickness, mesh positioning and subsequent coating requirements must follow the relevant manufacturer's technical data sheets and the requirements of the specified strengthening system.

Frequently Asked Questions

What is Mapegrid G 120 used for?

Mapegrid G 120 is an alkali-resistant glass fibre mesh used for localised strengthening of masonry substrates as part of compatible Mapei reinforced strengthening systems.

Which Mapei mortars can be used with Mapegrid G 120?

It is designed for use with Planitop HDM Maxi and Planitop HDM Restauro. Refer to the relevant system documentation for compatibility and installation requirements.

Is Mapegrid G 120 alkali-resistant?

Yes. It is manufactured from alkali-resistant A.R. glass fibres and has a stated zirconia content of 17%.

What is the tensile strength of Mapegrid G 120?

The manufacturer states a tensile strength of at least 30kN/m, with an elongation at failure of approximately 1.8%.

What size is Mapegrid G 120 mesh?

The current Mapei technical data sheet states a mesh size of 10.5 x 11.5mm, with a tolerance of ±2%. Older product literature may show a different mesh measurement.

What roll sizes are available?

Product literature lists 25m x 45cm and 50m x 1m rolls. Please check the available options when ordering.

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Clever Shield supplies Mapei structural strengthening and repair products throughout the UK. Clever Shield supplies materials only and does not design or specify structural strengthening systems. Product selection and system design should be confirmed by the responsible project designer or structural engineer, using the latest manufacturer documentation.