Sikagard® CorPro-470

2 years in original unopened packaging.

Store dry between 5 °C to 32 °C (41 °F to 89 °F) Precondition material for at least 24 hours between 18 °C to 30 °C (65 °F to 86 °F) before using.

A: B = 4:1 by volume 

Minimum 10 °C (50 °F ) Maximum 30 °C (86 °F).  

Ambient Air Relative Humidity: Maximum 85 % (during application & cure).

NOTE: Application attempted at low ambient air or substrate temperatures and/or under high humidity conditions, will result in a decrease in product workability and slower cure rates. 

Beware of condensation! The substrate must be at least 3 °C (5 °F) above the Dew Point to reduce the risk of condensation, which may lead to adhesion failure or “blushing” on the finish. Be aware that the substrate temperature may be lower than the ambient air temperature.

Minimum 10 °C (50 °F ) Maximum 30 °C (86 °F).  

Drying times will vary according to air and substrate temperature and relative humidity.

Protect from dampness, condensation and water contact during the initial 24 hour cure period.

~12 m²/L (~490 ft²/US gal.) per coat (3.3 mil w.f.t. / 2 mil d.f.t.)

Typically one (1) coat is required, though on higher absorbency substrates a second coat may be required.  Actual coverage rates and material consumption will depend upon porosity and profile of substrates.

Test areas are recommended to establish correct coverage rates.

Common Steel:  All steel to be coated must be dry, clean and stable before applying the coating. Remove all existing treatments such as coatings, sealers, wax, and contaminants i.e. dirt, dust, grease, oils, and foreign matter, which will interfere with the adhesion of Sikagard® CorPro-470. Prepare steel substrates by appropriate mechanical means, such as abrasive blast-cleaning in order to achieve clean white metal profile equivalent to SSPC-SP10, Near White Metal, 2 to 4 mil anchor profile and apply primer immediately, before oxidation of the steel occurs.

Galvanized Metal: Is a difficult substrate to achieve satisfactory adhesion. The surface is very smooth with no anchor pattern making proper surface preparation very important to minimize adhesion problems. Passivation treatments must be removed. Prepare galvanized metal substrates to MPI standard 5.3 Galvanized Metal using either a brush off blast (SSPC-SP 7 brush off blast cleaning standard) or by cleaning and etching solution (MPI #25 Etching Cleaner) following the manufacturer’s instruction to create a fine anchor pattern.

Mixing Ratio A:B = 4:1 by volume

Do not hand mix Sikagard® CorPro-470 resin materials: mechanical mix only.

Pre-stir each component separately to ensure that all soft settling is dispersed, solids are evenly distributed throughout and components are consistent within themselves.

Empty component B in the correct mix ratio to component A. Mix the combined components for at least three (3) minutes, using a low-speed drill (300 - 450 rpm) to minimize entrapping air. Use an Exomixer® or Jiffy type mixing paddle (recommended model) suited to the volume of the mixing container. During the mixing operation, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once, to ensure complete mixing.

When completely mixed, allow a 20 minute to 30 minute induction time and then remix before application.  Failure to do so will result in unsatisfactory performance.

Sikagard® CorPro-470 should be uniform in colour and consistency before application.

Do not mix more material than can be applied within the working time limits (i.e. Pot Life) at the actual field temperature. 

Sikagard® CorPro-470 can be applied by brush, roller or spray equipment, whichever is the most suitable to the surfaces to be coated or site conditions and limitations. For spray applications, contact spray equipment specialists to determine suitable equipment and for application advice (thinning maybe required) contact Sika Canada. If thinning is necessary, proceed only after recommended induction time has passed.

Sikagard® CorPro-470 must be applied in a workman-like manner using skilled and trade qualified applicators. The film thicknesses stated must be produced and complete coverage achieved.

If time between coats (primer to primer or primer to finish coats) exceeds 48 hours at 23 °C (73 °F), abrade surface to create a fine anchor pattern, then wipe clean with a solvent-dampened cloth to remove all traces of loose materials and dust.

Clean tools and brushes with Sika® Epoxy Cleaner.  Once hardened, product can only be removed mechanically.