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
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Primer G is a synthetic resin-based primer that dries to create a flexible, compact, and shiny coating on various surfaces, effectively consolidating them where necessary. This primer enhances the adhesion of smoothing compounds, paints, wallpaper adhesives, tile adhesives, and render mortars. Additionally, it forms a protective film on gypsum and cement surfaces, preventing chemical reactions between sulphates and cement aluminates, which can cause ettringite formation and subsequent separation when moisture is present. When used prior to wallpaper application, it reduces substrate