Sikafloor®-80 EpoCem® Primer
WATER BASED EPOXY RESIN PRIMER
Sikafloor®-80 EpoCem® Primer is a 2- part water based epoxy resin primer.
- Easy and fast application
- Especially suitable for highly absorbent substrates
- Water based and odourless
- Very good bond strength over a wide temperature range
- Environmentally friendly
Usage
A primer and adhesion promoter on the following substrates:- New and old concrete
- Cementitious screeds
- Sikafloor® EpoCem® levelling layers
- Sikafloor®-81 EpoCem® and Sikafloor®-82 EpoCem®
Advantages
- Easy and fast application
- Especially suitable for highly absorbent substrates
- Water based and odourless
- Very good bond strength over a wide temperature range
- Environmentally friendly
Packaging
| Part A | 1.6 kg x 2 container |
| Part B | 4.0 kg x 2 container |
| Part A + B | 5.6 kg ready to mix units |
Colour
| Part A | White liquid |
| Part B | Translucent yellowish liquid |
| Mixed colour | Yellowish |
Product Details
Composition
Water based epoxy
Shelf life
12 months from date of production
Storage conditions
The product must be stored in original, unopened and undamaged sealed containers in dry conditions at temperatures between +5°C and +35°C. Protect from frost.
Density
| Part A | ~1.10 kg/l (at +27 °C) |
| Part B | ~1.04 kg/l (at +27 °C) |
| Mixed resin | ~1.05 kg/l (at +27 °C) |
Tensile Adhesion Strength
| > 1.5 N/mm² | (ISO 4624) |
Application
Mixing Ratio
Part A : Part B = 1 : 2.5 (by weight)
Ambient Air Temperature
+10 °C min. / +35 °C max.
Layer Thickness
Dry film thickness ~25 μm per coat
Relative Air Humidity
85 % max.
Dew Point
Beware of condensation.
The substrate and uncured floor must be at least 3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product.
Substrate Temperature
+10 °C min. / +35 °C max.
Substrate Moisture Content
Can be applied on matt, damp concrete when overcoating with the Sikafloor® EpoCem® range.
Pot Life
| Temperature | Time |
| +10 °C | ~120 minutes |
| +20 °C | ~90 minutes |
| +30 °C | ~45 minutes |
Curing Time
| Substrate temperature | Foot traffic |
| +10 °C | ~12 hours |
| +20 °C | ~6 hours |
| +30 °C | ~4 hours |
No specific additional curing measures are required.
All times are approximate and will be affected by changing ambient and substrate conditions.
Waiting Time / Overcoating
Before applying Sikafloor®-81 EpoCem® / Sikafloor®-82 EpoCem® onto Sikafloor®-80 EpoCem® Primer allow:
| Substrate temperature | Minimum | Maximum |
| +10 °C | 12 hours | 24 hours |
| +20 °C | 6 hours | 12 hours |
| +30 °C | 4 hours | 6 hours |
Consumption
1-2 coats × 0.25-0.4 kg/m² (dependent on substrate porosity).
This figure is theoretical and does not include for any additional material required due to surface porosity, surface profile, variation in level or wastage, etc.
MIXING
Prior to mixing, thoroughly stir part A (resin) mechanically. When all of part B (hardener) has been added to part A, mix continuously for 3 minutes until a uniform mix has been achieved.
To ensure thorough mixing, after mixing for 3 minutes, pour mixed material into another container carefully scraping residue material from the sides with a spatula then mix again to ensure complete and thorough mixing.
Excessive mixing must be avoided to minimize air entrainment.
Mixing Tools
Sikafloor®-80 EpoCem® Primer must be thoroughly mixed using low speed electrical equipment (300 - 400 rpm).
APPLICATION
Apply Sikafloor®-80 EpoCem® Primer by suitable brush, roller or squeegee and then back roller in two directions at right angles to each other.
Caution: The end of the product’s potlife is not visibly noticeable. Use within the specified times. Discard material not used within these times.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with water immediately after use. Hardened or cured material can only be removed mechanically.