Sikagard®-62
Sikagard®-62 is a two part, rigid, 100 % solids, coloured high build epoxy resin based protective coating.
- Solvent free
- Good mechanical and chemical resistance
- High build
- Impervious to liquids
- Easy to mix and to apply
- Can be used for contact with potable water
Usage
- Chemical resistant protective layer on concrete, stone, cementitious mortars and renderings, epoxy cement, epoxy resin based products and steel
- Lining in storage tanks and silos, including potable water reservoirs
- Anti-corrosion coating on steel in food processing plants, sewage works, farms, agricultural enterprises, chemical and pharmaceutical facilities and beverage industry
Advantages
- Solvent free
- Good mechanical and chemical resistance
- High build
- Impervious to liquids
- Easy to mix and to apply
- Can be used for contact with potable water
Packaging
| Part A | 7.5 kg drums |
| Part B | 2.5 kg drums |
| Part A + B | 10.0 kg set |
Colour
RAL 7032 (pebble grey) and light grey, other on request
Product Details
ENVIRONMENTAL INFORMATION
Conformity with LEED v2009 IEQc 4.2: Low-Emitting Materials - Paints and Coatings
European Environmental Product Declaration
CERTIFICATES AND TEST REPORTS
CE-Certification as coating for concrete protection according the requirements of EN 1504-2
Chemical Resistance Chart
DWI Appproval according to Water Quality Regulation 31
Composition
2 Part epoxy-based resin
Shelf Life
12 months from date of production
Storage Conditions
The packaging must be stored properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5 °C and +30 °C. Protect from direct sunlight.
Density
| Part A | ~1.45 kg/l |
| Part B | ~1.02 kg/l |
| Mixed product | ~1.37 kg/l |
Density values determined at +23 °C
Solid Content
~100 %
Shore D Hardness
~80
Mechanical Resistance
Impact resistance | ~6 Nm |
Abrasion Resistance
Abrasion resistance | 607 mg |
Wear resistance BCA | Class AR1 |
Tensile Adhesion Strength
> 2.5 MPa to concrete | (EN 1542) |
Chemical Resistance
Please refer to Chemical Resistance Chart (available at request)
Temperature Resistance
| Exposure to dry heat | Temperature |
| Permanent | +50 °C |
| max. 7 days | +80 °C |
| max. 12 hours | +100 °C |
Permeability to Water Vapour
Sd = 44 m (Class II) | (EN ISO 7783) |
Permeability to Carbon Dioxide
Sd = 711 m | (EN 1062-6) |
Service Temperature
-30 °C to +50 °C
Water Penetration After Capillary Absorption
< 0.01 kg/(m2·h0.5) | (EN 1062-3) |
Application
Mixing Ratio
Part A : Part B = 3 : 1 by weight
Layer Thickness
~0.2 mm per layer, minimum two layers required.
Ambient Air Temperature
+8 °C min. / +40 °C max.
Relative Air Humidity
< 80 %
Substrate Temperature
+8 °C min. / +40 °C max.
Minimum 3 °C above dew point, beware of condensation!
Pot Life
| Temperature | Working Time |
| +10 °C | ~30 min |
| +20 °C | ~20 min |
| +30 °C | ~10 min |
Waiting Time / Overcoating
| Temperature | Min. | Max. | Full cure |
| +10 °C | ~30 hours | ~3 days | ~14 days |
| +20 °C | ~10 hours | ~2 days | ~10 days |
| +30 °C | ~6 hours | ~1 day | ~5 days |
Consumption
~0.30 kg/m² per layer, minimum 2 layers required.
SUBSTRATE PREPARATION
Concrete Substrate
The substrate must be sound, clean, dry, free from contaminants such as dirt, grease, oil, old coatings, release agents, laitance and other adhesion preventing or influencing substances. Weak areas in the substrate must be removed and surface defects such as blowholes and voids must be fully exposed. All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush and/or vacuum. Open voids and blowholes need to be closed with a suitable Sika® pore filling mortar. The roughness of the substrate needs to be levelled with a suitable Sika® fairing coat. Concrete substrate must be prepared mechanically to achieve an open textured surface. All concrete and mineral surfaces must be primed with a suitable Sika® primer, e.g. Sikafloor®-150, -150 plus or -151 before application of Sikagard®-62.
Steel Surface
Steel surface must be prepared mechanically using abrasive blast cleaning. The level SSPC-SP 10 “near white metal blast cleaned” or level Sa 2 ½ according to ISO EN 12944-4 has to be achieved. Welds and joints have to be prepared according to EN 14879, part 1. After blast cleaning remove all dust dirt and blasting material. In order to maintain the surface conditions after blast cleaning air-conditioning is recommended.
MIXING
Prior to mixing stir Part A mechanically. Then add Part B to Part A and mix continuously for 3 minutes until a uniform mix has been achieved. Use a low speed electrical stirrer (300–400 rpm) to avoid air entrapment. To ensure proper mixing pour material into a clean container and stir again. Do not mix by hand!
APPLICATION
Apply by brush, roller or airless spray onto the prepared and primed surface with a minimum consumption of 300 g/m².
After drying of the first layer, apply the second layer with a minimum consumption of 300 g/m². Two layers are mandatory.
Optionally a third layer can be applied for extra protection in case of very harsh conditions to be expected.
For details on spray application, please consult Sika Technical Department for further information.
CLEANING OF TOOLS
Clean all tools with Thinner C immediately after use. Hardened and/or cured material can only be removed mechanically.