Product Data Sheet Show all documents

Sika® Reactivation Primer

One-component primer for the reactivation of existing SikaRoof® MTC and Sikalastic® waterproofing systems

Sika® Reactivation Primer is an one-component polyurethane based primer for the reactivation of SikaRoof® MTC, Sikalastic® roofing systems and Sikafloor® balcony waterproofing systems. Suitable for use in hot and tropical climatic conditions.

  • One-component - easy and ready to use
  • Enhances adhesion to existing Sikalastic® and Sikafloor® systems
  • Allows further coats to be safely applied when the standard re-coating window has been exceeded
  • Suitable for use over a wide range of existing polyurethane roofing membranes (subject to satisfactory adhesion testing)
Product Data Sheet Show all documents

Usage

Primer for use when recoating existing:
  • SikaRoof® MTC
  • Sikalastic® roofing systems
  • Sikafloor® balcony waterproofing systems.
 

Advantages

  • One-component - easy and ready to use
  • Enhances adhesion to existing Sikalastic® and Sikafloor® systems
  • Allows further coats to be safely applied when the standard re-coating window has been exceeded
  • Suitable for use over a wide range of existing polyurethane roofing membranes (subject to satisfactory adhesion testing)

Packaging

5 L (~5.15 kg) metal container

Colour

Low viscosity liquid, clear

Product Details

Product Information

Composition

Solvent borne polyurethane

Shelf life

12 months from date of production

Storage conditions

The product must be stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between 0 °C and +25 °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

~1.03 kg/l (23 °C)

(EN ISO 2811-1)

 

Application

Application Information

Ambient Air Temperature

+5 °C min. / +30 °C max.

Relative Air Humidity

85 % r.h. max.

Dew Point

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

Substrate Temperature

+5 °C min. / +30 °C max.

Pot Life

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

Waiting Time / Overcoating

Temperature

Waiting time

20 °C

3 – 4 h

5 °C

5 – 6 h

Sika® Reactivation Primer can be overcoated once cured and tack free. Maximum recoat period within 48 hours of application of  the primer.

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

Consumption

~0.10 kg/m2 (Apply in 1 coat)
Application steps

SUBSTRATE QUALITY

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

SUBSTRATE PREPARATION

All surfaces to be coated should be thoroughly cleaned by conventional means.
Pre-treat with Sika® Biowash on areas subject to organic growth.
If in doubt apply a test area first.
For detailed information regarding substrate quality/preparation and primer chart please refer to Method Statement.

APPLICATION

Prepare Sika® Reactivation Primer by stirring thoroughly.
Sika® Reactivation Primer can be applied by short-piled roller or brush.
Allow Sika® Reactivation Primer to dry sufficiently (see table waiting time/overcoating) before overcoating.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with Thinner C immediately after use. Hardened and/or cured material can only be removed mechanically.

Documents