Ready to Use
MulTfill is ready for immediate use and has an indefinite shelf life. If contents harden, add a few drops of warm water to soften.
Make sure the surface to be repaired is clean, free of dust and structurally sound/good condition. Not for use on rotten wood. May be colored using tints, stains, oxides, etc. Add colorant prior to use. Wet color in tub is final color when top coated. Will not take colorant evenly when dry.
Apply firmly with a wet plastic putty knife. Ensure void is completely filled as filler is dense. Layer in 1/4" (6 mm) increments. Allow each layer to dry thoroughly before adding another layer. Sands off like powder when dry, using 120 grit sandpaper or finer.
Depending on weather and depth of fill, drying time may vary from 1 to 3 hours. Use a heat gun to decrease drying time. Must be top coated.
As with all products producing dust, wear a dust mask. MulTfill is non-flammable. Contains no VOCs. Clean tools with water.