Dusting of Concrete Poured Against Plywood Forms
Technical Topic
Surface dusting is a soft, chalky condition that can occasionally appear on concrete when plywood forms are removed. Surface dusting does not compromise structural integrity, but the appearance can be objectionable and it may affect adhesion of coatings.
This publication is for: builders, contractors
This publication identifies 12 contributing factors to concrete dusting, based on laboratory research and field studies from APA – The Engineered Wood Association, the U.S. Forest Products Laboratory and the California Division of Highways.
It also provides practical prevention strategies and remedies, including proper panel selection and storage, appropriate release agent selection, surface treatments and corrective measures for dusted surfaces.
Published by APA — The Engineered Wood Association.
