PPG Training

Custom Restoration Guide 2018

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Page 75 of 155

OVERVIEW UNDERCOATS OF THE INTRODUCTION Undercoats are used to create corrosion protection and a foundation of all repairs. There are four different types of undercoats, each having specific characteristics and roles. Some undercoats share the same catalysts with other products. This reduces inventory requirements and still allows each product to deliver the best overall performance possible. PRIMERS AND SURFACERS 76

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