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  • £7.47 - £92.82 ex. VAT
    £7.47 - £92.82 ex. VAT
      Mapei Primer G is a synthetic resin-based primer that, upon application to any surface, dries to create a flexible, glossy coating that enhances the integrity of the surface as needed. Primer G also enhances the bonding of smoothing compounds, paint, wallpaper adhesive, tile adhesive, and mortar for rendering. The layer on gypsum or cement surfaces acts as a barrier, preventing chemical reactions between sulfates and cement aluminates in gypsum that, when exposed to moisture, can lead to the formation of the problematic "ettringite" salt, which can cause separation. When used before