Sikagard® Duroplast EE

Sikagard® Duroplast EE is a two-part, high performance water-based epoxy blockfiller designed to prime and fill small pours and reduce surface irregularities on properly prepared walls and ceilings.

It serves to fill voids on porous surfaces and improve both the adhesion and appearance of high quality Sikagard® Duroplast® finishes that will be exposed to high levels of moisture in-service.

Recommended uses

Interior applications on wall and ceiling constructed from concrete block, masonry units, poured or precast concrete to obtain a filled surface profile. To provide superior bonding properties needed to support two-part epoxy and urethane finish coats in high abuse installation. To fill and seal walls and ceilings with variable absorption which might excessively absorb coatings. Wet and dry process areas subject to repeated cleaning such as; food and beverage processing plants, health care facilities, pharmaceutical, laboratories, animal care facilities, wash bays, locker and shower rooms. Used in new construction and maintenance work.

Features

• Material is convenient to proportion, 1:1 by volume resin to hardener ratio
• Low odour and low VOC
• Excellent bond and adhesion promotion
• Superior moisture resistance
• Good chemical resistance
• Good bridging and filling properties
• Good hiding capacity
• Provides a more uniform even surface to coat
• Fully compatible with Sikagard® Duroplast® finishes
• Clean-up with water

Packaging

37.85 L (10 US gal.) units

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 temperatures between 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

~68 %

Solid content by volume

~50 %

Volatile organic compound (VOC) content

~65 g/L

Mixing Ratio

A:B =1:1 by volume

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).

Pot Life

23 °C (73 °F) ~3 hours

Curing Time

Touch dry at 23 °C (73 °F) ~2 hours to ~3 hours Recoat time at 23 °C (73 °F) ~7 hours to ~9 hours Overcoat time at 23 °C (73 °F) ~24 hours to ~48 hours Full cure at 23 °C (73 °F) ~7 days Drying times will vary according to air and substrate temperature and relative humidity. Protect from dampness, condensation and water contact during the initial 24 hour cure period.

Consumption

1.2 m 2 /L to 2.0 m 2 /L (50 ft 2 /US gal to 80 ft 2 /US gal.) per coat (33 mil w.f.t. to 20 mil w.f.t. / 16 mil d.f.t. to 10 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

Mixing Ratio A:B =1:1 by volume Do not hand mix Sikagard® Duroplast® resin materials: mechanical mix only. Pre-stir each component separately to ensure that all soft settling is dispersed, solids are evenly distributed throughout and components are consistent within themselves. Empty Component B in the correct mix ratio to Component A into a suitably sized, clean mixing vessel. Mix the combined components for at least three (3) minutes, using a low-speed drill (200-300 rpm) to minimize entrapping air. Use an Exomixer® or Jiffy type mixing paddle (recommended model) suited to the volume of the mixing container. 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 complete mixing. When completely mixed, Sikagard® Duroplast EE should be uniform in colour and consistency. Allow the mixed material to stand (induction time) for one (1) hour, then lightly remix to ensure uniformity before applying. Failure to do so will result in unsatisfactory performance. Do not mix more material than can be applied within the working time limits (i.e. Pot Life) at the actual field temperature.

APPLICATION

Sikagard® Duroplast EE can be applied by brush, roller or spray equipment, dependent on limitatiions and site conditions. If sprayed, the material must be back rolled/brushed to ensure good penetration of the blockfiller into the substrate. Sikagard® Duroplast EE must be applied in a workmanlike manner using skilled and trade qualified applicators. The film thicknesses stated must be produced and complete coverage achieved (This condition may require a second coat). After application and prior to drying, remove masking tape in between each coat to avoid ‘ripping’ in the finished coating and let surfaces dry completely. Following cure of blockfiller 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 before the application of the body coats.

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 at 23 °C (73 °F) ~2 hours to ~3 hours Recoat time at 23 °C (73 °F) ~7 hours to ~9 hours Overcoat time at 23 °C (73 °F) ~24 hours to ~48 hours Full cure at 23 °C (73 °F) ~7 days Drying times will vary according to air and substrate temperature and relative humidity.

Application temperature

Minimum 10 °C (50 °F ) Maximum 30 °C (86 °F).

VOC

~65 g/L