a two-component, spreadable, waterproof paste for filling cracks and defects in rot-damaged wood. It spreads easily; won't sag, drag or pull. An excellent companion for Sculpwood Putty where filling cracks is needed. Spreads with ease and control.Will not sag, drag or pull.Simple two-component system; requires no additional modification with fillers or thickeners.Features a convenient 1:1 mixing ratio.Two color system ensures complete mixing.100% waterproof.No shrinkage on curing.