Caulk Once is a high performing, reputable, fast drying, acrylic caulk designed for sealing and filling cracks and gaps prior to decorating. As a superior, long-lasting filler and sealant, the permanently flexible and slump resistant properties have been specifically designed to provide excellent gap filling and sealant functions. Using an advanced high quality polymer to offer superior adhesion, low shrink and tooling down smoothly, Caulk Once provides the ideal time saving solution for sealing and filling cracks and gaps prior to decorating. With a quick drying time, the area can over painted or covered with wall paper in one hour. Caulk Once is the ideal solution every decorator needs. 1 x Caulk Once White.