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February 7 - February 13, 2011

How does residue from chemical stripping affect the performance of the replacement coating?

Selected Answers

From Lee Edelman of CW Technical Service on February 9, 2011:
     Most paint strippers use chemical solvent mixtures to remove paints and some have methylene chloride. When removing residue from chemical stripping, you should use the proper personal protective equipment. All residue should removed before the replacemennt coating is applied.

From remko tas of Futuro SRL on February 8, 2011:
     Some chemical strippers are formulated with strong alkaline components that  have to be removed thoroughly by a power wash; otherwise, they will react with the new coat and cause blistering.

From Jorge Lizarraga of International Paint on February 7, 2011:
Most of the chemical strippers are formulated based on paraffin- like  thickeners and chlorinated solvents. Due to the difficulty of removing such compounds, when we apply another coating without a thorough rinse, we are painting on a thin layer of paraffin or another thickener, mixed with solvent. So, we are compromising the adherence and possibly allowing the formation of blisters formed by the evaporations of the solvents occluded in the chemical stripper.

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