Product Data Sheet
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Vapor Retarder Primer WB (US)

Vapor Retarder Primer WB (water-based) is a polymer emulsion-based primer

Vapor Retarder Primer WB (US) (water-based) is a polymer emulsion-based primer used to prime wood, concrete, lightweight concrete, gypsum decks, and approved gypsum boards prior to the application of Sika’s self-adhered vapor retarders. Particularly recommended when the use of solvent-based primer is not advised and/or not permitted.

  • Enhanced adhesion strength between primed substrates and Sika’s self-adhered vapor retarders.
 
Product Data Sheet
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Usage

Water-based primer used prior to the application of Sika’s self-adhered vapor retarders     Areas of Application
  • Wood
  • Concrete
  • Lightweight concrete
  • Gypsum decks
  • Approved gypsum boards
 

Advantages

  • Enhanced adhesion strength between primed substrates and Sika’s self-adhered vapor retarders.
 

Packaging

5 gallon (18.9 L) pails, 46 lbs (20.9 kg) per pail, 36 pails per pallet

Colour

Blue

Product Details

Product Information

Chemical Base

Water-based liquid

Shelf Life

Vapor Retarder Primer WB has a shelf life of 24 months in the original sealed container when kept from freezing temperatures.

Storage Conditions

Store Vapor Retarder Primer WB in a tightly closed container at temperatures between 40°F and 99°F (5°C and 37°C).

Keep from freezing.

Density

Specific Gravity: 1.03 kg/L at 68°F (20°C)

Solid Content

55 % (by weight)

Volatile organic compound (VOC) content

0 g/L

Viscosity

500 cP at 77°F (25°C)

Application

Application Information

Waiting Time

30 minutes to 3 hours depending on temperature and quantity applied
Consumption

Coverage

The coverage rate will range from 140 – 416 ft2/gal (0.1 – 0.3 L/m2) depending on the porosity of the surface.
Application steps

SUBSTRATE PREPARATION

All surfaces should be clean, dry, free of dirt, dust, debris, oils and other contaminants.

MIXING

Vapor Retarder Primer WB must be mixed well before use. Do not dilute.

APPLICATION

Apply Vapor Retarder Primer WB with a brush, roller or spray and allow primer to dry completely. Sika vapor retarder must be installed on the same day as the application of Vapor Retarder Primer WB. If spray equipment is used, spray tip size should be between 20 and 25 mils (0.51 mm to 0.64 mm) with a continuous pressure setting of 1300 psi.

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