Concrete:
Smooth Coating:
Primer Coat: Apply Sikadur® WDE Primer onto prepped concrete substrates using a brush, roller or squeegee to a uniform coverage without ponding. Refer to the current product data sheet for Sikadur® WDE Primer for published recommendations and further information.
1st Coat: Once the primer is tack free apply Sikagard® Duochem-7500 using a brush, roller or squeegee to a uniform coverage without ponding.
2nd Coat: Once first coat is tack free, apply a second coat of Sikagard® Duochem-7500 using a brush, roller or squeegee to a uniform coverage without ponding.
Broadcast Build-Up System:
Primer Coat: Apply Sikadur® WDE Primer onto prepped concrete substrates using a brush, roller or squeegee to a uniform coverage without ponding. Refer to the current product data sheet for Sikadur® WDE Primer for published recommendations and further information.
Broadcast Coat: Once the primer is tack free apply the broadcast coat of Sikagard® Duochem 7500 using a notched squeegee or trowel and backroll to a uniform coverage. Broadcast the selected sand (shape and size to be selected in accordance with required texture/slip resistance) into the wet resin to rejection.
Top Coat: Once the broadcast coat has sufficiently cured to allow foot traffic, sweep-up and vacuum-off all loose, unbounded sand. Apply the top coat of Sikagard® Duochem-7500 using a squeegee, followed by back rolling to provide a uniform texture and finish.
Steel: Priming, consolidation or sealing of common steel substrates with Sikadur® WDE Primer is not usually required under typical circumstances. However, due to variations in steel quality, surface condition, surface preparation and ambient conditions, reference test areas are recommended to determine whether priming is required to prevent the possibility of issues with adhesion, compatibility, or other defects. Consult Sika Technical Services for advice.
Application of Sikagard® Duochem-7500 onto properly prepared steel surfaces is typically the same procedure as outlined above for smooth coatings and broadcast build-up systems onto concrete, excluding the use of Sikadur® WDE primer, unless determined otherwise.
See Typical Data section of this product data sheet above for coverage rates, specific application thicknesses and number of coats
recommended.