Sikalastic®-515 FG US

• High solar reflectivity and thermal emittance for:
  • Energy saving
  • Reduces heat island effect
  • Environmentally friendly
• Prolongs existing roof life
• Reduced life cycle costs

• ASTM D6083 Type I
• California Title 24 compliant  

12 Months

Store in dry place at temperatures between 40°F and 80°F away from moisture, heat, sparks and open flames.

Wet adhesion is typically obtained with use of a primer (see primer chart for more details). 

Apply above 50°F and only when weather conditions allow sufficient time for curing/drying before rain, dew or freezing temperatures. Cool temperatures and high humidity may increase drying time.

Surface temperatures should be 5°F above the dew point and at least 50°F.  In hot climates, apply the base coat in falling temperatures.

Substrates should be 4% or less as measured by a Tramex Moisture Meter. Wet adhesion is typically obtained with use of a primer (see primer chart for more details). Do not apply over wet insulation or related materials. Existing Roof membranes and substrates should have a moisture scan before applying Sikalastic®-515 FG US.

Apply an additional coat or Sikalastic-515 AC once previous coat has cured.

Product will skin over in 4 - 6 hours and develop a full cure in 24 - 36 hours depending on temperature and humidity.

• Inspect all areas to receive Sikalastic®-515 FG US and make all necessary repairs
• All surfaces should be properly sloped to drains.  Any areas susceptible to ponding water should be resloped to properly shed water from the roof
• All surfaces must be clean, dry and free of dirt, grease, oil, or any other contaminants that would interfere with or prohibit a proper bond
• Membranes with seam and/or flashing failures must be repaired by standard roofing practices
• Tighten and/or replace all existing fasteners
• Install crickets and complete all needed sheet metal repairs
• Prime all surfaces with the appropriate primer

Before application, mix Sikalastic® 515 FG using a mechanical mixer at a slow speed. Mix thoroughly until a homogeneous mixture and color are atttained. Do not dilute under any circumstance.

Use Sikalastic-501 Primer when applying directly over mineral cap-sheets, mod-bit or other asphalt type surfaces for "bleed-blocking" capability.  Apply Sikalastic-501 Primer at a rate of 12 -16 mils (0.75 -1.0 gal per 100 SF) depending on substrate roughness.

Prior to coating any surface, be sure the coating will adhere by performing an adhesion test (ASTM D-903). Sikalastic®-515 FG US may be applied by brush, roller, or spatula. Do not apply when temperatures are below 50 °F (10 °C) or when precipitation is in the forecast within 48 hours. In areas where the roof is subject to foot traffic, it is recommended to apply walkway pads for added protection and slip resistance. Apply Primer to the substrate according to the application instruction from the Product Data Sheet, and allow to dry.

Apply/flash Sikalastic®-515 FG US with or without Sika® Flexitape Heavy according to project specifications on the transitions of round projections, machine legs, sign posts, guide wire straps, inside and outside corners, gutters, parapet walls, penetrations and similar areas.  Repair any damaged metal and caulk and seal watertight all screws, seams, transitions, terminations, penetrations, skylights, joints, pipes, voids, protrusions and any areas where water could enter through the roof. On metal roofs with standing seams, apply Sikalastic®-515 FG US sealing them completely. Make certain that all walking pads are appropriately and adequately secured. Use Sikalastic®-515 FG US to caulk all edges of walking pads.

Higher humidity and/or colder temperatures will slow the drying time of Sikalastic®-515 FG US.  In colder and/or more humid conditions, apply Sikalastic®-515 FG US at thinner application rates for faster drying times (this will also increase the number of required coats).