Most lightweight frame in the industry

The natural oil-based and microporous finish does not crack

when it is most vulnerable

171% by weight) for Part 7 film protection

without proper preparation before decoration

Johnstones Trade Alkali Resisting Primer White Size:5l Most lightweight frame in theDescription Specification Download Shipping & Returns Product Description: Johnstone's Trade Alkali Resisting Primer is a pigmented solvent based primer and sealer for interior and exterior use on new or bare plaster, concrete, cement, render, or wood and metal surfaces. It is suitable for interior and exterior use, and provides exceptional resistance to alkali attack when used as a primer on unpainted surfaces, or as a sealer on powdery substrates.