HOLD OUT™ Sealer & Water Repellent

Hold Out is a reactive, penetrating catalyzed siliconate solution that fuses within porous substrates such as BioLime Lime Plaster, stucco, concrete, brick, stone, and mortar to combat freeze/thaw damage, scaling and spalling, and limit penetration of stains, damaging impurities and salt. Hold Out is breathable with minimal impact to traction coefficient. It creates a cross linked insoluble methyl silicone internal membrane that will wear away only if the substrate itself wears away below sealer penetration.