Sika® Reactivation Primer

Solvent borne polyurethane

12 months from date of production

The product must be stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between 41 °F (5 °C) and 86 °F (30 °C). Condition material to 50°-77°F (10°-25°C) before using for ease of application.

Higher storage temperatures may reduce shelf life of product. Reference shall also be made to the storage recommendations within the safety data sheet.

41 °F (5 °C) min. / 86 °F (30 °C) max.

85 % R.H. max.

Beware of condensation.
The substrate and uncured coating must be ≥ 5 °F (3 °C) above dew point.

41 °F (5 °C) min. / 86 °F (30 °C) max.

Once opened, the product should be used promptly. Storage of partial containers may result in performance being affected.

Ideally, membrane resin will be applied within 24 hours of primer application. Maximum primer exposure is 48 hours. Primer exposed longer than 48 hours, and primer exposed to water during curing and exhibiting a chalky appearance, must be reprimed. Deteriorated primer must be mechanically removed before primer reapplication.

Note: Times are approximate and will be affected by changing ambient conditions, particularly temperature and relative humidity.

250 ft²/gal.

The surface must be sound, of sufficient strength, clean, dry, free of stripping agents and free of oil, grease, silanes, salts, silicone, siloxanes and other chemicals which could cause poor adhesion.

Clean existing membrane thoroughly by power washing. Remove all chalking, dirt and any other physical or chemical contaminants prior to priming. Mechanical scrubbing and the use of a biocide-detergent may be required. Rinse all contaminants and detergent residue off of the
membrane surface and allow to dry thoroughly.

For detailed information regarding substrate quality/preparation and primer chart please refer to Sikalastic® RoofPRO Application Manual.

Mixing is not required

Apply by brush or phenolic resin core roller at the recommended rate. Correct amount of primer
will leave a slight film on the membrane top surface. Apply evenly without puddling.

Remove wet primer with MEK, xylene or oxygenat d solvents and a clean cloth. Once cured, primer can only be removed by mechanical means. Strictly follow solvent manufacturer’s warnings and instructions for use.