Sikalastic® EP Primer/Sealer

Epoxy

24 months

Store dry between 40 °F and 95 °F (2–35 °C)

Condition material to 50–77 °F (10–25 °C) before using for ease of application.

-22–176 °F (-30–80 °C) intermittent

Adhesion tests should be completed at a minimum of 72 hours after application.  Sikalastic® EP Primer/Sealer may take 1 week to reach final adhesion strength depending on temperature and other climate conditions. Refer to adhesion test protocol on the Sika website.

Component A to Component B = 3 to 1 (by volume)

PREMIX PART A BEFORE MIXING PARTS A & B TOGETHER

41 °F (5 °C) min. / 95 °F (35 °C) max.

80 % R.H. max.

Beware of condensation.
The substrate and uncured coating must be ≥ 5 °F (3 °C) above dew point.

41 °F (5 °C) min. /  140°F (60°C) max.

≤ 4 % moisture content Test method: Sika®-Tramex meter
No rising moisture according to ASTM (Polyethylene-sheet).

45 minutes

Before applying any recommended Sikalastic® resin on Sikalastic® EP Primer/Sealer, allow:

Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.

Ideally, membrane resin will be applied within 24 hours of primer application. Maximum primer exposure is 72 hours. Primer exposed longer than 72 hours, and primer exposed to water during curing and exhibiting a chalky appearance, must be reprimed. Deteriorated primer must be mechanically removed before primer reapplication.

Coverage:

200 - 250 ft²/gal. on non-absorbent smooth substrates
150 - 200 ft²/gal. on prepared, dry concrete
  75 - 100 ft²/gal. on mineral surfaced modified bitumen
         200 ft²/gal. (max) when ussed as an asphaltic bleed blocker

Note: Rough, porous, or absorbent surfaces will require additional primer and will reduce yield

• All substrate surfaces shall be clean, dry and sound
• Acceptable substrates include: sound concrete and masonry, wood and plywood, modified bitumen membrane, mineralized asphaltic cap sheet, asphalt and asphalt mastic, ferrous metals, galvanized, lead, copper, aluminum, brass, and stainless steel 
• Ferrous metals should be thoroughly cleaned by grinding or blast cleaning prior to priming (SSPC-SP3 to SP11 near-white metal)
• Non-ferrous metals are prepared by removing any deposits of dust and oxidation and abrading to bright metal
• New concrete must cure a minimum of 28 days and should have a minimum compressive strength of 20.7 MPa (3000 psi) and exhibit a minimum tensile bond strength of 1.4 MPa (200 psi). time
• Cementitious or mineral based substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and to achieve an open textured surface (CSP 2-4 per ICRI guidelines)
• Reference separate System Data Sheet for specific surface preparation requirements

Mix ratio is 3 to 1 (A:B) by volume. PREMIX PART A BEFORE MIXING PARTS A & B TOGETHER.  Add Part B into Part A and mix with a mechanical mixer (Jiffy) at low speed for 3 minutes. Avoid adding air into the primer during mixing. When fully mixed, the primer should be free from streaks and of a uniform red color. Do not break down kits into smaller quantities.

Apply by brush or phenolic resin core roller at the recommended rate. Correct amount of primer will saturate the substrate and leave a slight film on the substrate top surface. Apply evenly without puddling.

Remove wet primer with solvents. Once cured, primer can only be removed by
mechanical means. Strictly follow solvent manufacturer’s warnings and instructions for use.