Product Data Sheet Safety Data Sheet Show all documents

Sikalastic® Primer

One-Component, High Solids, Aromatic Polyurethane Primer

Sikalastic® Primer is cold applied, single component, low-odor moisture-curing polyurethane resin. It is designed for sealing cementious substrate to reduce the incidence of outgassing.

  • Significantly reduces the likelihood of blistering and pin holing
  • Fast curing formulation
  • Single component
  • Compatible with most concrete, masonry, and stone substrate materials
  • Low odor
  • Lo-VOC
  • Low temperature application
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Suitable for use on most sound substrate surfaces where both a penetrative and surface lying effect is required.
  • Can be used as a recoat primer over existing PU coatings.   Adhesion test is recommended. 
 

Advantages

  • Significantly reduces the likelihood of blistering and pin holing
  • Fast curing formulation
  • Single component
  • Compatible with most concrete, masonry, and stone substrate materials
  • Low odor
  • Lo-VOC
  • Low temperature application

Packaging

5 gal. pails

Color

Light Amber

Product Details

Product Information

Chemical Base

Moisture cure polyurethane

Shelf Life

12 months in original, unopened containers

Storage Conditions

Store dry at 41–77 °F (5–25 °C).

Condition material to 50–77 °F (10–25 °C) before using for ease of application.

Solid Content

65 %

Volatile organic compound (VOC) content

< 100 g/L
Technical Information

Chemical Resistance

Not intended for direct exposure

Application

Application Information

Cure Time

30–45 minutes at 77 °F (25 °C) and 50 % R.H. Lower temperatures will extend cure time.

Recoat Time: Up to 72 hours
Consumption

Coverage

225 to 300 ft2/gal, depending on substrate profile and porosity
250 ft2/gal on prepared, dry concrete and masonry (CSP3 surface preparation)

Note: On porous/open substrates, apply as two coats, each at maximum spread rate of 275 ft2/gal
Application steps

MIXING

No mixing necessary.

APPLICATION

Apply one coat of Sika® Concrete Primer by squeegee and/or medium nap roller ensuring and even and consistent coverage. Ensure all excess material is removed by back rolling.

  

Removal

Remove liquid uncured resin immediately with dry cloth and do solvent cleanup. Once cured, resin can only be removed by mechanical means.

 

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