Dap Inc 18408 Alex Fast Dry Caulk 5.5 Oz White

Product Description

The DAP INC 18408 is a 5.5 oz tube of Alex Fast Dry acrylic latex caulk in white, formulated for contractors, painters, and finish carpenters who need a paintable seal without extended dry-time delays. This caulk is ready to paint in 20 minutes, making it a practical choice when schedules are tight. It delivers a durable, flexible bead that resists cracking under paint film movement and is backed by a 50-year durability guarantee. Cleanup requires only water, keeping job-site setup minimal. The product meets ASTM Specification C 834 for latex sealing compounds.

The 18408 is suited for both interior and exterior applications where a fast-turnaround, paintable caulk joint is needed. Common use cases include sealing trim, baseboards, window and door casings, and wall-to-ceiling joints prior to painting. The fast-dry formulation makes it a standard choice for residential repaint work, light commercial finish work, and new construction punch-out where paint crews need to caulk and coat in the same window.

Key Features

• Ready to paint in 20 minutes, supporting tight production schedules
• Flexible, durable bead resists paint cracking over time
• 50-year durability guarantee from the manufacturer
• Meets ASTM Specification C 834 for latex sealing compounds
• Water cleanup — no solvents required
• Rated for both interior and exterior use

Compatibility

Designed as an OEM-style replacement-grade acrylic latex caulk suitable for use with standard latex and oil-based paint systems on wood, drywall, masonry, and primed metal surfaces in residential and light commercial applications.

Installation Notes

Applied by licensed painters, finish carpenters, or general contractors using a standard caulk gun. Surfaces should be clean, dry, and free of dust, loose paint, and oil before application. Allow the full 20-minute minimum dry time before applying paint topcoat, and extend wait time in high-humidity or low-temperature conditions. Follow local building codes and manufacturer guidance for joint width and depth when used in exterior assemblies.