An additive, usually starch, used to increase cohesion in the gypsum core of wallboard. A binder coat also refers to a thinset mortar to bind tile to the backerboard.
« Back to Glossary IndexAn additive, usually starch, used to increase cohesion in the gypsum core of wallboard. A binder coat also refers to a thinset mortar to bind tile to the backerboard.
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