Images for illustration purposes only Watco Oil Block Primer is a two part epoxy primer specially developed to aid adhesion to porous floor surfaces that cannot be thoroughly cleaned. Recommended areas of use Machine workshop floors Factory floors Warehouse floors Garage floors Features Suitable for concrete, brick and masonry, and it will also work on timber surfaces Not suitable for use on non-porous, previously painted surfaces or metal surfaces Not usually suitable for vegetable, animal or synthetic oil residues. It will tolerate slight dampness in the substrate It should be over coated with a suitable coating such as Watco Epoxy Gloss Coat.