Johnstones Trade Alkali Resisting Primer

A solvent based primer which can be used as a sealer on powdery surfaces, concrete, cement, and unpainted plaster and render.
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Johnstone's Alkali Resisting Primer : - is a solvent based primer and sealer. It can be used on new or bare plaster, concrete, cement and rendered surfaces. This product is generally used as a primer on unpainted surfaces or as a sealer on powdery surfaces.