Sikalastic® EP Primer/Sealer
Sikalastic® EP Primer/Sealer consists of two components: an epoxy resin (Part A), and an activator (Part B). In its wet mixed state, it is red in color.
- Low odor, low VOC formulation
- Compatible with most common substrate and flashing materials
- Corrosion protection in industrial and marine environments
- Enhances adhesion to a broad range of metallic substrates
- Protects against migration of volatile bitumen or plasticizers
- Easy application by brush or roller
Usage
Versatile primer for use with:- Sikalastic® RoofPRO Systems
- Sikalastic® DeckPRO Systems
Advantages
- Low odor, low VOC formulation
- Compatible with most common substrate and flashing materials
- Corrosion protection in industrial and marine environments
- Enhances adhesion to a broad range of metallic substrates
- Protects against migration of volatile bitumen or plasticizers
- Easy application by brush or roller
Packaging
1 gal. kit (0.75 gal. Part A, 0.25 gal. Part B)
4 gal. kit (3.0 gal. Part A, 1.0 gal. Part B)
Product Details
Chemical Base
Epoxy
Shelf Life
12 months in original, unopened and undamaged sealed containers
Storage Conditions
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.
Solid Content
| 92 % by volume | (ASTM D-2697) |
Volatile organic compound (VOC) content
| 78 g/l | (ASTM D-2369-81) |
Service Temperature
-22–176 °F (-30–80 °C) intermittent
Application
Mixing Ratio
Component A : Component B = 3:1 (by volume)
Ambient Air Temperature
41 °F (5 °C) min. / 95 °F (35 °C) max.
Relative Air Humidity
80 % R.H. max.
Dew Point
Beware of condensation. The substrate and uncured coating must be ≥ 5 °F (3 °C) above dew point.
Substrate Temperature
41 °F (5 °C) min. / 140°F (60°C) max.
Substrate Moisture Content
≤ 4 % moisture content Test method: Sika®-Tramex meter No rising moisture according to ASTM (Polyethylene-sheet).
Pot Life
45 minutes
Cure Time
Before applying any recommended Sikalastic® resin on Sikalastic® EP Primer/Sealer, allow:
| Ambient temperature | Mimimum waiting time | Maximum waiting time | Touch dry | |
| 50 °F | 12 hours | 72 hours | 8 hours | |
| 68 °F | 9 hours | 72 hours | 4 hours | |
| 6 hours | 72 hours | 3 hours |
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
Coverage:
250 ft²/gal. on non-absorbent smooth substrates. 200 ft²/gal. on prepared, dry concrete. 100 ft²/gal. on mineral surfaced modified bitumen.
Note: Rough, porous, or absorbent surfaces will require additional primer and will reduce yield.
SUBSTRATE PREPARATION
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. Reference separate System Data Sheet for specific surface preparation requirements.
MIXING
Mix ratio is 3:1 (A:B) by weight and volume. Add Part B into Part A and mix with stir stick or mechanical mixer (Jiffy) at low speed. 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.
APPLICATION
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.
CLEANING OF TOOLS
Remove wet primer with MEK, xylene, or oxygenated solvents. Once cured, primer can only be removed by mechanical means. Strictly follow solvent manufacturer’s warnings and instructions for use.