Dap Inc 18542 Alex Flex Molding Trim Sealant 10.1 Oz White

Product Description

The DAP INC 18542 is a premium interior molding and trim sealant formulated specifically for difficult molding and trim applications. Packaged in a 10.1 oz cartridge, this white sealant delivers maximum flexibility and adhesion on surfaces that standard sealants tend to fail. It is paintable in 30 minutes, which keeps job timelines moving without waiting for extended cure windows. The cured sealant is mold resistant and is engineered so it will not shine through applied paint, maintaining a clean finished appearance. Licensed contractors, finish carpenters, and skilled tradespeople working on interior trim projects rely on this product for reliable, long-lasting joints.

The 18542 is designed for interior molding and trim work where movement, expansion, and contraction are factors. It performs well on natural wood materials as well as newer synthetic substrates including PVC, polystyrene, and composite trim. This makes it a practical choice for residential interior finish work where a mix of traditional and modern trim materials are used in the same installation. Cleanup is done with soap and water before the sealant cures, reducing solvent handling on the job site.

Key Features

• Paintable in 30 minutes, supporting fast turnaround on finish work
• Crack-proof formulation provides maximum flexibility after cure
• Will not shine through paint, preserving the appearance of finished trim
• Cured sealant is mold resistant for long-term performance in interior environments
• Compatible with PVC, polystyrene, composite, and natural wood trim materials
• Soap and water cleanup before cure, no solvents required
• Meets ASTM C920 Class 12.5 standard for sealant performance

Compatibility

Designed for use on interior molding and trim applications involving natural wood and synthetic materials including PVC, polystyrene, and composite substrates.

Installation Notes

This sealant is typically applied by finish carpenters or interior contractors using a standard caulk gun. Surfaces should be clean, dry, and free of loose material before application. Remove any existing failed sealant and allow surfaces to reach room temperature before applying. Clean up uncured sealant promptly with soap and water.