Images for illustration purposes only Watco Basics Floor Repair Mortar can be used to fill holes in concrete inside and out. It is strong enough to resist heavy foot traffic, trolleys and trucks; (for areas where there is regular forklift traffic, we recommend Watco Concrex) Just take as much powder as you need out of the bucket, mix with water and trowel into place you dont need a primer. The mortar will not shrink as it dries and will take full traffic after only 4 hours. Recommended areas of use Damaged floors, ramps and steps, inside and out. Features Easy mix polymer and cement formulation Heavy traffic after only 4 hours Non dusting, resists grease and oil Repairs from 5mm to 100mm thick in one go