APPLICATION INSTRUCTIONS

All substrates must be dry, stable, sound, and free of all contaminants such as grease, oil, paint, wax, dust, curing, and sealing compounds that will interfere with the penetration of the primer and the adhesion of Sika® Level-325.

MIXING

• Pour 5.25-6 qt. (5-5.7 L) of cool potable water (~ 70 °F, 21.1 °C) into a suitably sized and clean mixing container, using a calibrated measuring jug, or similar, to ensure strict control of the water content (do not over-water). If available water is not at this temperature, then consideration should be given to cooling/heating the water.
• Add Sika® Level-325 to the water, while slowly mixing, adding the complete contents of the bag.
• Mix with a high-speed drill (> 650 rpm) and an egg-beater-style mixing paddle to blend water and powder for approximately 3 minutes, until a lump-free and uniform mix has been produced.
• Do not overmix or allow the paddle to rise above the level of material as this will introduce and entrap air into the mix, potentially shortening the working life or causing pin-holing in the underlayment.
• Let the mixed material stand until the majority of air bubbles have dispersed.

APPLICATION

• Pour the mix and spread using a smoothing trowel. Even surfaces are easily achieved using a pin leveler. It’s not recommended to remove troweling defects or to level more than once.
• If the second layer of leveling compound has to be applied, prime the first layer with Sika^® Level-01 Primer Plus (1:1) when the first layer is walkable. The maximum layer thickness must not be exceeded in the case of two-layer applications and the second layer must not exceed the layer thickness of the first layer.

• Protect curing Sika® Level-325 layers from high ambient temperatures, and direct sunlight and ensure adequate air circulation.
• Sika® Level-325 is not intended to be used as a wear layer even if coated or sealed. Sika® Level-325 must be protected from any type of contamination by installing a suitable floor covering like ceramic tiles, carpet, VCT, wood floor, etc.
• Always install an adequate number of properly located test areas, including the finish flooring.
• As floor coverings vary, always contact and rely upon the floor covering manufacturer for specific directions such as maximum allowable moisture content, adhesive selection, and intended end use of the product.

EXTENSION WITH AGGREGATES

• For applications greater than 1-1/4" (25 mm) in depth, add 3/8" (9.5 mm) coarse aggregate.
• The aggregate must be non-reactive (reference ASTM C-1260, C-227, and C-289), clean, well graded, Saturated Surface Dry (SSD), have low absorption and high density, and comply with ASTM C-33 size number 8 per Table 2.
• Pre-washed 3/8” (9.5 mm) pea-gravel can be pre-placed onto the primed area being leveled at no more than 1/3 of the total placement depth. Pour the material over the aggregate and rake to ensure proper consolidation around the aggregate and a proper bond with the substrate. Applicators must be aware that the aggregate can cause voids in the underlayment if not filled correctly.
• Variances in aggregate may result in different strengths and flows.
• The addition rate is 25 lb. (11.4 kg) of aggregate per bag. It is approximately 2.0 gal. (7.6 L) by loose volume of aggregates.
• The final 1/8-1/4" (3.2-6.3 mm) layer should be neat to allow for a smooth finished floor.
• Do not add more water.

CLEANING OF TOOLS

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