Sikagard® Duroplast PS

Sikagard® Duroplast PS is a single part, high quality acrylic resin used to prime and effectively seal properly prepared walls and ceilings.

Sikagard® Duroplast PS serves to equalize the absorption of porous surfaces, provide an even surface, and improve both the adhesion and appearance of high quality Sikagard® Duroplast-100 N and Sikagard-352 W finishes.

Recommended uses

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

Features

• Quick drying - 2 hour over-coat time
• Suitable for hardened, dry, filling and patching compounds
• Easy to prepare and apply
• Reduces and equalizes absorbency of surfaces
• Seals in fibres on gypsum board
• Fully compatible with Sikagard® Duroplast®-100 N and Sikagard®-352 W finishes
• Provides a more even surface to coat
• Good hiding capacity
• Excellent bond and adhesion promotion
• Clean-up with water
• Low odour and low VOC

Packaging

18.9 L (5 US gal) pail

ENVIRONMENTAL INFORMATION

• Contributes towards satisfying LEED® v4 EQ Credit - Low-Emitting Materials • Contributes towards satisfying LEED®v4 MR Credit - Building Product Disclosure and Optimization - Material Ingredients (Option 1) • Contributes towards satisfying LEED®v4 MR Credit - Building Product Disclosure and Optimization - Sourcing of Raw Materials (Option 1: Raw material source and extraction reporting) • Contributes towards satisfying LEED®v4 MR Credit: PBT Source Reduction · Lead, Cadmium, and Copper

APPROVALS / CERTIFICATES

Meets the requirements of CFIA for use in food plants.

Shelf Life

1 year in original unopened container.

Storage Conditions

Store in a dry place, protected from freezing at a temperature between 5 °C and 32 °C (41 °F and 90 °F).  Protect from freezing. If Sikagard® Duroplast PS has frozen, contact Sika Canada.

Volatile organic compound (VOC) content

< 25 g/L

Solid content by weight

~55 %

Solid content by volume

~36 %

Product Temperature

Condition product at temperatures between 18 °C and 30 °C (65 °F and 86 °F) before and during application.

Ambient Air Temperature

Minimum: 10 °C (50 °F) / Maximum: 30 °C (86 °F) Note: Mixing carried out under conditions where the Sikagard® Duroplast PS temperature and ambient temperature are below 18°C (65°F) will result in reduced product workability and slower drying rates.

Relative Air Humidity

Maximum 85 % (during application and curing)

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) Note: Any attempt to apply Sikagard® Duroplast PS at substrate temperature conditions less than 18 °C (65 °F) will result in an increase in viscosity and slower drying rates.

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 ® 100 N / Sikagard ® 352 W) Full cure ~5 days Note: 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 m 2 /L (~321 ft 2 /US gal.) at ~5 mil (w.f.t.) / ~2 mil (d.f.t.) Note: 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

IMPORTANT: Do not hand mix Sikagard® Duroplast PS; mechanically 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.  During the mixing operation, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once, to ensure thorough mixing. Do not attempt to attend to unmixed material that may gather on the sides of the mixing container while mechanical or electrical parts are in motion. When completely mixed, Sikagard® Duroplast PS should be uniform in colour and consistency. Should soft settlement have taken place, ensure that solids are dispersed and evenly distributed 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 the product is to be applied by spraying, Sikagard® Duroplast PS 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.

Cure time

Touch dry ~1 hour to ~2 hours Recoat time ~2 hours to ~4 hours Overcoat time ~24 hours (Sikagard® Duroplast® 100 N / Sikagard® 352 W) Full cure ~5 days

Application temperature

Minimum: 10 °C (50 °F) / Maximum: 30 °C (86 °F)

VOC

< 25 g/L