A coating’s performance is directly proportional to the effort directed to preparing the surface. WORLDTECH recommends the steel form be sandblasted to an SP-6 specification established by the Steel Structures Painting Council. Concrete surfaces shall be cleaned to remove all contaminants; dirt, curing compounds, laitance, oil, etc. Every effort should be made to prime the blasted surface the same day. If this is not possible, protect the form from the elements and inspect it for corrosion prior to priming.

Both the primer and top coat can be applied with brush, roller, or spray gun. Brushing may be necessary to reach areas of the form not accessible to spray. Do not attempt to spray the coatings if you are not experienced using spray equipment. The coatings are easily applied with brush and rollers. Use ¼” nap mohair roller sleeves for Primer and Poly Foam roller sleeves for the top coat. It is very important to follow the catalyzing and mixing instructions precisely for both the primer and top coat. Please see the complete application instructions on the Technology & Specifications link.

The minimum recommended DFT (dry finished thickness) for the primer is 3 plus mils. The recommended DTF for the top coat is 1.5 – 2 mils.

Allow the epoxy primer to dry overnight. Lightly sand the form before applying the ECO NO-OIL^® top coat. Epoxy primers have strict recoat windows. Refer to and follow the application of top coat recommendations found on the Primer’s product data sheet located on the Technology & Specifications link.

Twenty four hours after application of the top coat.

To avoid a build-up of contaminants, a little time should be spent cleaning the form prior to each pour. A wet rag or fine steel wool (000 or 0000) can be used to remove residue and laitance. Four inch metal scrapers and putty knives will also work in removing concrete residue. In severe cases of laitance, use a solution of 30% muriatic acid and water with steel wool or rag.

The number of cycles differs from form to form. Tricon Precast, Houston, TX, attained in excess of 50 cycles from an ECO coated barrier form. The number of pours is directly linked to the maintenance of the form.

If the top coat has been removed after a number of cycles and the primer is still intact, sand the area with 200 – 300 grit sandpaper and apply more ECO NO-OIL^® top coat with a brush. Allow the top coat to cure for 24 hours before putting the form back into service.

Both the primer and the top coat contain solvents. Follow the personal protective gear recommendations in the MSDS and product data sheets for the various coatings. Applying the coatings in a well-ventilated area is always the best practice.

No, some form geometries may still require a film of oil to facilitate the strip. Forms with a non-collapsible core may still require a film of oil on the core only. The other benefits of the coating still apply; ease of cleaning, fewer bug holes, smooth concrete, and corrosion resistance.

Pot life is dependent on temperature. At 78° F, the primer’s pot life is about one hour. Only mix enough primer and top coat to complete the job. To extend the pot life of the primer, mix the primer in a large base container, not a tall narrow container.

Yes, some form geometries may still require a film of oil to facilitate the strip, primarily forms with non-collapsible cores where a great deal of friction exists during the strip. The other benefits of the ECO NO-OIL^® coating still apply; ease of cleaning, fewer bug holes, smooth concrete, and corrosion resistance.