SikaWall®-520 Stucco Level Coat

12 months from date of production if stored properly in original, unopened and undamaged sealed packaging.

Store dry, off ground and protect from rain and moisture.

Pot life is 1–2 hours after water has been added, re-tempering once only as needed for workability. Open time is affected by surface suction, humidity and temperature.

• 24 hours under normal circumstances, drying time is affected by surface suction, humidity and temperature. 
• Full adhesive bond strength is reached after 1–4 days, depending on humidity and temperature.

Depending on the condition of the substrate and method of application, approximate coverages are:

• As a basecoat to embed mesh: up to 65 ft2 (6 m2) per bag. Coverage will vary depending on weight of mesh.
• As a leveler, coverage depends upon the thickness applied.

• Planar irregularities are limited to 1/4 in. (6mm) or less in a 4 ft. (1.219mm) radius. Surface irregularities are limited to 1/4 in. (6mm) or less
• Remove surface contaminants such as dust or dirt without damaging the substrate.
• Painted substrates must have the paint removed with methods that result in no more than 10% of the remaining surface area having well adhered paint.
• For additional options for surface preparation, contact Sika Facades Technical Services Department.

• Use clean equipment for mixing and preparation.
• Requires approximately 1-1 1/2 gallons (3.79-5.69L) of cool clean potable water per bag.
• Add 1 gallon (3.79 l) of water to a 5 gallon (18.9 l) pail. Slowly add SikaWall®-520 Stucco Level Coat while stirring and mix to a homogenous consistency using a heavy-duty 1/2 in. (13mm) drill with a rust-free paddle at 400-500 rpm.
• Add the remaining water needed and blend for a total mixing time of 5 minutes.
• Let the mixture stand (temper) for five minutes after initial mixing, then stir again (adding up to 1/2 gallon (1.89 l) of water).
• SikaWall®-520 Stucco Level Coat should be used immediately after tempering.
• Half batches may be mixed for convenience.
• No additives of any kind, such as rapid binders, anti-freeze, accelerators, fillers, pigments, etc., should be added under any circumstance.

• Read the entire product label before using this product.
• Apply Stucco Level Coat to cured portland cement based surfaces at a uniform thickness of 1/16-3/32 in. (1.5-2.4mm). Embed SikaWall reinforcing mesh immediately in the wet SikaWall®-520 Stucco Level Coat using a stainless steel trowel, until the reinforcing mesh is fully embedded. The color of the reinforcing mesh should not be visible at the surface of the SikaWall®-520 Stucco Level Coat, immediately skim the surface with additional SikaWall®-520 Stucco Level Coat if or as necessary. A slight pattern of the mesh is acceptable upon drying, due to shrinkage. SikaWall mesh seams are overlapped a minimum of 2.5 inches (63mm).
• As a leveler or filler: Apply SikaWall®-520 Stucco Level Coat and level to a uniform surface. Maximum thickness in a single application should be no more than 1/4 in. (6mm).
• Finishes can be applied to completed dry SikaWall®-520 Stucco Level Coat surface after a minimum 24 hours. When cement finishes are to be applied over SikaWall®-520 Stucco Level Coat and before the SikaWall®-520 Stucco Level Coat basecoat is completely dry, float the surface with a damp plaster float (green sponge with handle). This process will remove any minor defects in the original basecoat application and leave an ideal surface to accept cement stucco finishes. SikaWall-73 Admix & Bonder should be used as an admixture to the cement stucco finish. See SikaWall-73 Adacryl Admix & Bonder product data sheet for more information.

Immediately clean all tools and mixing equipment with water after use.