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Previously known as MASTERCOAT Binder fortified lime plaster with extra coarse marble aggregate. Designed as a preliminary base-coat and/or finish coat for showers, fireplaces, heavy textures, primed tiles, exteriors and where durable surfaces are required. Corso replaces cement based substrates in showers, fireplaces and more. Cement, like Thinset, or standard mortar cement, will continue cracking over time, telegraphing the cracks and fissures onto the finish coat of plaster. Corso solves this problem. Can also be used as a color-integrated finish coat. Matte sheen / subtle color variation, if used as a finish coat. High adhesion/bonding to most surfaces No cement Smooths surfaces Excellent crack resistance / high tensile strength Zero VOCs Will not harden after mixing. Can be used indefinitely after mixing with water. Available in dry mix only Formerly 'Shower Basecoat' COVERAGE: 100 SQ FT (per 1 coat) - Click for COLOR CHART - INSTRUCTIONS AND TECHNICAL DATA VIDEO - MIXING DRY MIXES learn more
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🇺🇸 Ship from USA · On Agora since 2026
$145.00