ATLAS FLEXIBLE UNIVERSAL CAULK is a fast-drying, plastic-elastic acrylic sealant engineered for versatile interior applications. This white caulk bonds reliably to concrete, plaster, wood, MDF, ceramics, steel, and PVC without primer, even on damp substrates. Ideal for sealing joints, seams, and cracks in walls, ceilings, drywall, window frames, door surrounds, and mouldings. The formulation minimises shrinkage and crack formation whilst maintaining structural integrity across a wide temperature range (-25°C to +80°C). Paint-ready within approximately 30 minutes on standard 5mm joints, it accepts typical interior finishes seamlessly. Low shrinkage and superior adhesion make it a dependable choice for both horizontal and vertical surfaces throughout the home.