Seal your roof, flashing, skylights, chimneys with Flexible Seal Roof Sealant. This sealant is an elastomeric coated sealant that is graded for exterior use only. It dries tack free in 30-60 minutes and is resistant to water, UV rays, mildew, and fungus. Flexible Seal can be used in place of wet patch cement. Available in different color options, Flexible Seal will seal seams, flashing, drains, vents, gravel guards, or where openings have been created due to aging.