Mapei Mapetherm AR1 GG Grey Skim Coat Mortar 25kg

Mapei Mapetherm AR1 GG is a single-component coarse-grained cementitious mortar designed for bonding and smoothing thermal insulation panels in external thermal insulation composite systems (ETICS). Its formulation based on cement, selected sands, synthetic resins, polypropylene fibres and special additives ensures high adhesion, excellent workability and mechanical strength, making it ideal for professional applications both indoors and outdoors. Mixed with water, the product becomes a thixotropic mortar that can also be applied vertically without dripping and without causing insulation boards to slide, even large-format ones.

Mapetherm AR1 GG is suitable for bonding and reinforced smoothing of EPS, XPS, PIR, mineral wool, cork, wood fibre and other insulating materials used in modern external insulation systems. The product offers excellent adhesion to cement plasters, masonry, concrete and traditional building surfaces, ensuring controlled hardening without noticeable shrinkage and good breathability of the substrate. Thanks to its characteristics, it is a reliable professional solution for thermal insulation and energy efficiency upgrading of buildings. The product is available in grey in 25 kg bags

Main advantages: single-component cementitious mortar for external insulation systems, high adhesion to thermal insulation panels and building substrates, excellent thixotropy for vertical applications without dripping, hardening without noticeable shrinkage, easy workability and good mechanical strength, ideal for reinforced skim coats with fibreglass mesh.

Recommended applications: bonding and smoothing of insulation panels for external thermal insulation systems, use on external façades and internal walls, application on cement plaster, masonry and concrete, reinforced skim coats with fibreglass mesh, energy efficiency upgrading and professional thermal insulation work

Mix Mapetherm AR1 GG with water at an indicative ratio of 21–24% until a smooth, paste-like consistency is obtained. Apply the mortar to the back of the insulation panel with a notched trowel or using the bead-and-dot technique, depending on the substrate. For reinforced skim coating, apply an even layer of product and embed the fiberglass mesh before the second skim coat. The product can be applied at temperatures between +5°C and +35°C, has a working time of approximately 3 hours, and an indicative consumption of about 4–6 kg/m² for bonding the panels and 1,35–1,55 kg/m² per mm of thickness as a skim coat. Available in 25 kg grey sacks.

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