Sikalastic®-720 One Shot

• Meets ASTM C957 "Standard Specification for High-Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane with Integral Wearing Surface".

1 year in original, unopened containers.

Store dry at 41-95 °F (5-35 °C).

Condition material to 65-85 °F (18-30 °C) before using.

95% including aggregate

See Product Safety Data Sheet

45 mils dry (48 WFT)

33 sf/gal

158 sf/Pail (4.8 gal A+B+Aggregate mix)

Surface must be clean, dry, and sound with an open texture. Remove dust, laitance, grease, curing compounds, bond inhibiting impregnations, waxes, and any other contaminants. All projections, rough spots, etc., must be removed to achieve a level surface prior to the application.

Concrete - Must be cleaned and prepared to achieve a laitance and contaminant-free, open-textured surface by blast cleaning or equivalent mechanical means. The desired surface texture is CSP 3 per ICRI Guidelines. In addition, the substrate surface must be thoroughly cleaned by blowing/vacuuming to remove all particulates that may interfere with coat bonding.

Plywood – Must be clean and smooth, APA and exterior grade, not less than ½” thick, and spaced and supported according to APA guidelines. Joints should be sealed with Sikaflex® 2c NS EZ Mix or Sikaflex® 1a and detailed, may need embedded fabric reinforcement.

Metal - Must be thoroughly cleaned by grinding or blast cleaning. Sikalastic EP Primer is recommended to be used for proper adhesion and corrosion protection.

Existing Coatings - Should be cleaned and mechanically abraded to provide a contaminant free, open textured surface. Followed by a solvent wipe or mop as allowed by state and local regulations. After solvent flashes off proceed with approved primer for existing coating.

DETAILING

Non-structural cracks up to 1/16 inch – Apply a detail coat of a Sikalastic® Base Coat at 23 mils dry, 4” wide, centered over the crack. Allow to become tack free before overcoating.

Cracks and joints over 1/16 up to 1 inch – Seal previously routed and primed cracks and joints with Sika Sealant and allow to skin over and cure for 24 hours min. Apply a detail coat of a Sikalastic® Base Coat at 23 mils dry, 4” wide, centered over the crack. Allow to become tack free before overcoating.

Joints over 1 inch – Should be treated as expansion joints and brought up through the Sikalastic® 720 One Shot Traffic System and sealed with Sika sealant (see Sealant Guide).

PRIMING
Primer Selection - Primer is required for all applications of Sikalastic®-720 One Shot.  For applications over concrete, the primer used will depend on the moisture level of the concrete.  Measure the moisture content of concrete substrate with a Tramex CME or CMExpert type concrete moisture meter.

Sikadur®-22 Lo-Mod FS- For concrete with a maximum moisture content of 4 % by weight, plywood decks, and existing polyurethane coatings, apply a single coat application of Sikadur®-22 Lo-Mod FS with a flat squeegee or roller at approximately 10 mils at 160 sf/gal.  Apply evenly without puddling. Allow primer to cure until tack-free, typically 2-4 hours (at 75°F (24°C) 50 % R. H). Sikadur®-22 Lo-Mod FS should be overcoated within 36 hours after tack-free.  Refer to a separate product data sheet for additional information.

Sikalastic® FTP LoVOC Primer - For plywood decks, concrete with a maximum moisture content of 5 % by weight, apply a single coat application of Sikalastic® FTP LoVOC Primer with a flat squeegee or roller at approximately 175 sf/gal. For concrete decks with a maximum moisture content of 6% by weight, apply two applications of Sikalastic® FTP LoVOC Primer with a flat squeegee or phenolic resin roller at approximately 175 - 220 sf/gal per application. Work primer well into the substrate to ensure adequate penetration and sealing.  Apply evenly without puddling. Refer to separate primer data sheet for additional information.

Sikalastic® MT Primer - For concrete with a maximum moisture content of 5 % by weight, and for metal flanges and penetrations, apply a single coat application of Sikalastic® MT Primer with a flat squeegee or roller at approximately 175 sf/gal. For concrete decks with a maximum moisture content of 6% by weight, apply two applications of Sikalastic® MT Primer with a flat squeegee or phenolic resin roller at approximately 175 sf/gal per application. Work primer well into the substrate to ensure adequate penetration and sealing.  Apply evenly without puddling.  Refer to a separate primer data sheet for additional information.

Sikalastic® EP Primer/Sealer- For Wood (timber, plywood) and Metal (aluminum, galvanized, cast iron, copper, lead, brass, stainless steel, steel, zinc). Apply by brush or phenolic resin core roller at the recommended rate,100-250 sf/gal depending on the substrate. Correct amount of primer will saturate the substrate and leave a slight film on the substrate top surface.  Apply evenly without puddling. Refer to separate primer data sheet for additional information.

Sikadur®-22 Lo-Mod LT- For cold weather applications on concrete with a maximum moisture content of 4 % by weight and existing polyurethane coatings, apply a single coat application of Sikadur®-22 Lo-Mod LT with a flat squeegee or roller at approximately 160 sf/gal. Apply evenly without puddling. Allow primer to cure until tack-free, typically 2-4 hours (at 50°F (10°C) 50 % R. H). Sikadur®-22 Lo-Mod LT should be overcoated within 36 hours after tack-free.  Refer to a separate product data sheet for additional information.

Sikadur®-57 Lo-Mod LV- For concrete with a maximum moisture content of 4 % by weight, apply a single coat application of Sikadur®-57 Lo-Mod LV with a flat squeegee or roller at approximately 125-150 sf/gal. Apply evenly without puddling. Refer to a separate product data sheet for additional information.

Sikalastic® Primer – For existing polyurethane coatings only, apply Sikalastic® Primer with a flat squeegee or phenolic resin core roller at approximately 300 sf/gal. Work primer well into the substrate to ensure adequate penetration and sealing.  Apply evenly without puddling. Sikalastic® Primer is not suitable for metal substrates. Refer to a separate primer data sheet for additional information.

After opening Part A, place lid face up on ground, remove aggregate insert and place insert on pail lid. Premix Part A component using a low speed (400–600 rpm) mechanical mixer and Jiffy Paddle (5-50 gal. model) at slow speed to obtain uniform color. Slowly add aggregate from tray into Part A and continue to mix, making sure to scrape the bottom and sides of the pail, ensure aggregate is fully mixed within the Part A . Slowly pour Part B into Part A while mixing so that the Part B gets pulled into the vortex of the mixing paddle.  Scrape the sides of the container, Mix the combined material thoroughly for 3 minutes until a homogenous mixture and uniform color is obtained.  Use care to prevent whipping air into the material while mixing - use a slow and methodical mixing approach.

Clean tools with solvent that is acceptable to be used based on local regulations.  Xylene, Acetone and MEK, if accepted locally are effective for cleaning tools and equipment.