Sikagard® Duroplast PS
ADHESION AND APPEARANCE IMPROVING PRIMER AND SEALER FOR SIKAGARD® DUROPLAST WALL COATINGS
Sikagard® Duroplast PS is a single part, high quality acrylic resin used to prime and effectively seal properly prepared walls and ceilings. It serves to equalize the absorption of porous surfaces, provide an even surface, and improve both the adhesion and appearance of high quality Sikagard® Duroplast finishes.
- Easy to prepare and apply
- Low odour and low VOC
- Quick drying - 2 hour over-coat time
- Excellent bond and adhesion promotion
- Good hiding capacity
- Suitable for hardened, dry, filling and patching compounds
- Seals in fibres on gypsum board
- Reduces and equalizes absorbency of surfaces
- Provides a more even surface to coat
- Clean-up with water
- Fully compatible with Sikagard® Duroplast® finishes
Usage
- Interior applications, in-service dry area walls and ceilings constructed from plaster, gypsum board and concrete
- On porous or dense surfaces which might not promote optimum adhesion of finishes
- On walls and ceilings with variable absorption which might excessively absorb coatings
- Use in new construction and maintenance work
Advantages
- Easy to prepare and apply
- Low odour and low VOC
- Quick drying - 2 hour over-coat time
- Excellent bond and adhesion promotion
- Good hiding capacity
- Suitable for hardened, dry, filling and patching compounds
- Seals in fibres on gypsum board
- Reduces and equalizes absorbency of surfaces
- Provides a more even surface to coat
- Clean-up with water
- Fully compatible with Sikagard® Duroplast® finishes
Packaging
18.9 L (5 US gal.) pail
Colour
White
Product Details
ENVIRONMENTAL INFORMATION
Potential of contribution towards LEED v4 credits. Contact Sika Canada.
APPROVALS / CERTIFICATES
Meets the requirements of CFIA and USDA for use in food plants.
Shelf Life
1 year in original unopened container.
Storage Conditions
Store dry at 5 °C to 32 °C (41 °F to 89 °F). Protect from freezing. If frozen, discard. Precondition material for at least 24 hours between 18 °C to 30 °C (65 °F to 86 °F) before use.
Solid content by weight
~55 %
Solid content by volume
~36 %
Volatile organic compound (VOC) content
< 25 g/L
Application
Ambient Air Temperature
Minimum 10 °C (50 °F ) Maximum 30 °C (86 °F).
Ambient Air Relative Humidity: Maximum 85 % (during application & cure).
NOTE: Application attempted at low ambient air or substrate temperatures and/or under high humidity conditions, will result in a decrease in product workability and slower cure rates.
Dew Point
Beware of condensation! The substrate must be at least 3 °C (5 °F) above the Dew Point to reduce the risk of condensation, which may lead to adhesion failure or “blushing” on the finish. Be aware that the substrate temperature may be lower than the ambient air temperature.
Substrate Temperature
Minimum 10 °C (50 °F ) Maximum 30 °C (86 °F).
Substrate Moisture Content
Maximum moisture content of all concrete substrates must be < 4 % by mass (pbw - part by weight) when measured with a calibrated moisture meter for concrete (Tramex CME/CMExpert). Masonry surfaces, gypsum board and plaster must be below 85 (green zone on the reference scale) when measured with a calibrated electronic moisture meter (Delmhorst Model BD-10).
Minimum age of concrete and masonry surfaces prior to application: 28 days (depending on curing and drying conditions).
Minimum age of SikaTop® or Sika MonoTop® mortar prior to application: three (3) days, depending on curing and drying conditions. Moisture content must be < 4 % by mass (pbw - parts by weight) when measured with a calibrated moisture meter for concrete (Tramex CME/CMExpert).
Curing Time
| Touch dry | ~1 hour to ~2 hours |
| Recoat time | ~2 hours to ~4 hours |
| Overcoat time | ~24 hours (Sikagard® Duroplast® 100N / Sikagard® Duroplast®150N) |
| Full cure | ~5 days |
Drying times will vary according to ambient air and substrate temperature and relative humidity.
Protect from dampness, condensation and water contact during the initial 24 hour cure period.
Consumption
~7.9 m2/L (~321 ft2/US gal.) at ~5 mil (w.f.t.) / ~2 mil (d.f.t.)
Typically one (1) coat is required, though on higher absorbency substrates a second coat may be required. Actual coverage rates and material consumption will depend upon porosity and profile of substrates. Test areas are recommended to establish correct coverage rates.
MIXING
Do not hand mix Sikagard® Duroplast® resin materials: mechanical mix only.
Stir material thoroughly to disperse all solids and liquids, using a slow speed (300 - 450 rpm) drill and Exomixer® or Jiffy type mixing paddle (recommended model) suited to the volume of the mixing container to minimize air entrapment. Should soft settlement have taken place, ensure that solids are dispersed and evenly disdtributed into the material. The primer/sealer is supplied ready for use and must not be diluted.
Stir for 3 to 5 minutes until a uniform consistency and colour are achieved. It is important to keep the material fully blended; any breaks in application should be followed by re-stirring of the material to again produce a uniform consistency.
APPLICATION
Sikagard® Duroplast PS can be applied by brush, roller or spray equipment, whichever is the most suitable to the surfaces to be primed and sealed or site conditions and limitations. For spray applications, contact spray equipment specialists to determine suitable equipment and for application advise.
If sprayed, the material must be back rolled/brushed to ensure good penetration of primer into the substrate.
Sikagard® Duroplast PS must be applied in a workmanlike manner using skilled and trade qualified applicators. The film thicknesses stated must be produced and complete coverage achieved.
Following cure of primer coats, sand off any rough spots and visible defects with a fine sandpaper (120 - 220 grit), then vacuum and wipe surface to remove all residual traces of sanding dust.
CLEAN UP
Clean tools and brushes with warm water and where required, detergent. Once hardened, product can only be removed mechanically.
