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Sashco Gray Mortar & Stucco Repair Sealant Flexx delivers professional-grade sealing for masonry applications. This 10oz formulation combines flexibility with durability, accommodating the natural movement of mortar joints and stucco surfaces without cracking. The gray color matches standard mortar, ensuring seamless repairs on residential and commercial projects. Engineered for superior adhesion and weather resistance, it withstands temperature fluctuations and moisture exposure. Ideal for filling gaps, repairing cracks, and protecting vulnerable mortar lines from water infiltration and deterioration.