Building Chemicals Specialists
One component Epoxy Zinc Primer
UNIZINC EPOXY is supplied as a single component grey-coloured liquid based on metallic zinc and epoxy resins.
One or two coats of UNIZINC EPOXY are generally required, depending on the nature and profile of the substrate. A second coat can be applied between 30 minutes and one hour after the initial application. Application of concrete repair materials may also proceed at this time. At elevated temperatures, the recoatable and overlay times will be reduced. The minimum application temperature for UNIZINC EPOXY is 5oC.
Expose fully any corroded steel in the repair area and remove all loose scale and corrosion deposits. Steel should be cleaned to a bright condition paying particular attention to the back of exposed steel bars. Grit-blasting is recommended for this purpose.
Where corrosion has occurred due to the presence of chlorides, the steel should be high- pressure washed with clean water immediately after grit blasting to remove corrosion products from pits and imperfections within its surface.
UNIZINC EPOXY is applied as soon as possible to a dry surface after completion of the preparation work but always within 3 hours. Apply one full and unbroken coat by suitable brush, making sure that the back of exposed steel reinforcing bars are properly coated. Allow to dry fully before continuing.
The primed surfaces should not be left exposed to the elements for longer than necessary before over coating or application of the repair material.
The application of concrete repair materials should proceed as soon as the UNIZINC EPOXY is fully dry (see properties).
Anti-corrosion primer for exposed steel reinforcement for use with concrete repair mortars. The product actively resists corrosion within the confines of the repair location and avoids the generation of incipient anodes in immediately adjacent locations.
- Active zinc-rich system combats corrosion by electrochemical means
- Formulated for use with UNIROC repair products
- Single component product – easy to use with no reactive pot-life
- Time saving – touch dry after 15 to 45 minutes
- Economical, single component ensures almost no waste