Product Data Sheet Show all documents

Sikalastic® Roof Primer

MULTI-PURPOSE PRIMER AND SEALER FOR WATER BASED MEMBRANES

Sikalastic® Roof Primer is a single component silicate-modified acrylic based penetrating and film-forming roof primer and sealer for mineral and cementitious materials; it is used for binding, stabilizing and consolidating of various substrates. Sikalastic® Roof Primer can be applied by brush, roller or low-pressure spray.

  • Provides good protection against water and chloride intrusion
  • Helps stop efflorescence
  • Increases strength within cementitious substrates
  • Reduces substrate porosity through crystalline technology
  • Consolidates and binds dusty cementitious substrates
  • Stops capillary action and moisture migration by creating a negative and positive barrier
  • Binds and encapsulates asbestos sheeting
Product Data Sheet Show all documents

Usage

  • Encapsulation of asbestos cement sheeting/ asbestos containing substrates
  • Stabilize and consolidate aged and dusty concrete surfaces
  • Primer for the Sikalastic®-590 Plus AU roof membrane system
  • Sikalastic® Roof Primer is a primer and penetrating sealer
 

Advantages

  • Provides good protection against water and chloride intrusion
  • Helps stop efflorescence
  • Increases strength within cementitious substrates
  • Reduces substrate porosity through crystalline technology
  • Consolidates and binds dusty cementitious substrates
  • Stops capillary action and moisture migration by creating a negative and positive barrier
  • Binds and encapsulates asbestos sheeting

Packaging

1 Litre and 4 Litre plastic pails

Colour

Milky white homogenous liquid

Product Details

Product Information

Composition

Silicate- modified acrylic

Shelf life

9 months from date of production if stored properly in original, unopened and undamaged sealed packaging.

Storage conditions

The product must be stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C
and +30 °C. Higher storage temperatures may reduce shelf life of product. Reference shall also be made to the storage recommendations within the safety data sheet.

Density

~1.076 kg/L

Solid content by mass

~26.4 % (+23 °C / 50 % r.h.)
Technical Information

Tensile adhesion strength

2.95MPa

 

Application

Application Information

Waiting time to overcoating

45 minutes

Drying time

25-30 minutes
Consumption

Consumption

Approximately 13m2 per Litre

(This can fluctuate depending on porosity of substrate)
Application steps

APPLICATION INSTRUCTIONS

Sikalastic® Roof Primer can be applied to the substrate using a brush, roller or spray applied. For Waiting time/ overcoating please refer to the information on the PDS.

SUBSTRATE QUALITY

  • New concrete should be cured for at least 28 days and should have a Pull off strength ≥ 1.5 N/mm2.
  • Cementitious or mineral based substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and to achieve an open textured surface.
  • Loose friable material and weak concrete must be completely removed and surface defects such as blowholes and voids must be fully exposed.
  • Repairs to the substrate, filling of joints, blowholes/voids and surface levelling must be carried out using appropriate products from the Sikafloor®, SikaDur® and SikaGard® range of materials.
  • Outgassing is a naturally occurring phenomenon of concrete that can produce pinholes in subsequently applied coatings. The concrete must be carefully assessed for moisture content, air entrapment, and surface finish prior to any coating/priming work. Installing the primer either when the concrete temperature is falling or stable can reduce outgassing. It is generally beneficial, therefore, to apply the coating in the late afternoon or evening.

MIXING

Sikalastic® Roof Primer does not require stirring or mixing before use.

CLEANING OF EQUIPMENT

Clean equipment with water immediately after use.

 

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