Product Data Sheet Show all documents

Sikagard®-62

2-part epoxy protective coating

Sikagard®-62 is a 2-pack solvent-free high build coating material based on epoxy resin.

  • Solvent-free
  • Good chemical and mechanical resistance
  • Easy to mix and work
  • High-build
  • Impervious to liquids
Product Data Sheet Show all documents

Usage

  • As an abrasion-resistant universal coating material designed for normal to moderately aggressive chemical environments. Sikagard®-62 is suitable for use on concrete, stone, cementitious mortars and renderings (not polymer-modified), epoxy cements (EpoCem), epoxy mortars, iron and steel.
  • For linings in storage tanks and silos, bund areas. As anti-corrosion coating in food-processing plants, sewage works, farms and agricultural enterprises, chemical and pharmaceutical plants, beverage industries and bottling plants.
 

Advantages

  • Solvent-free
  • Good chemical and mechanical resistance
  • Easy to mix and work
  • High-build
  • Impervious to liquids

Packaging

Part A

9 kg/pail

Part B

3 kg/pail

Part A+B12 kg ready to mix units

Colour

Resin - Part A: Coloured, liquid

Hardener - Part B: Transparent, liquid

Pebble grey (RAL 7032). Additional colour shades on request.

Under sun radiation it may come to discolouration and colour deviation, this has no influence to the function of the coating.

Product Details

Product Information

Chemical base

Epoxy resin

Shelf life

12 months from date of production if stored properly.

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. Protected from direct sunlight.

Density

Part A: ~ 1.45 kg/l

Part B: ~ 1.02 kg/l

Mixed resin: ~ 1.37 kg/l

All density values at +23 °C.

Solid content by weight

~ 100 %

Solid content by volume

~ 100 %
Technical Information

Tensile Adhesion Strength

> 1.5 N/mm² (failure in concrete)

(ISO 4624)

CHEMICAL RESISTANCE

See separate chemical resistance list

Thermal Resistance

Exposure

Dry heat

Permanent

+50 °C

Short-term max. 7 days

+80 °C

Short-term humid heat* up to +80°C where exposure is only occasional (steam cleaning etc.).

*No simultaneous chemical load

Application

Application Information

Mixing ratio

Part A : Part B = 75 : 25 (by weight)

Ambient Air Temperature

+8 °C min. / +30 °C max.

Relative Air Humidity

< 80 % r.h. max

Dew Point

Beware of condensation!
The substrate and uncured floor must be at least 3ºC above the dew point to reduce the risk of condensation or blooming on the floor finish.

Substrate Temperature

+8 °C min. / +30 °C max.

Substrate Moisture Content

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

Pot Life

Max. open times

Temperature

Time

+10 °C

~30 min

+20 °C

~20 min

+30 °C~10 min

Waiting Time / Overcoating

Substrate temperatureMinimumMaximum
+10 °C30 hours3 days
+20 °C10 hours2 days
+30 °C6 hours1 day

Times are approximate and will be affected by changing ambient conditions.

Applied product ready for use

TemperatureFoot TrafficLight TrafficFull cure
+ 10 °C~ 2 days~ 5 days~ 14 days
+ 20 °C~ 1 days~ 4 days~ 10 days
+ 30 °C~ 18 hours~ 2 days~ 5 days

Times are approximate and will be affected by changing ambient conditions.
Consumption

Consumption

Roller coating

Coating SystemProductConsumption
PrimingSikagard®-620.3–0.5 kg/m²
Roller coatingSikagard®-620.3–0.5 kg/m² per coat, depending on substrate condition and coating thickness required

For a theoretical dry film thickness of 100 microns (0.1 mm) approx. 0.14 kg/m². These figures are theoretical and do not include for any additional material required due to surface porosity, surface profile, variations in level or wastage etc.
Application steps

APPLICATION INSTRUCTIONS

SUBSTRATE QUALITY

The concrete substrate must be sound and of sufficient compressive strength (minimum 25 N/mm²) with a minimum pull off strength of 1.5 N/mm².
The substrate must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings and surface treatments, etc.
If in doubt apply a test area first.

SUBSTRATE PREPARATION

Concrete substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and achieve an open textured surface.
Weak concrete must be removed and surface defects such as blowholes and voids must be fully exposed.
Repairs to the substrate, filling of blowholes/voids and surface levelling must be carried out using appropriate products from the Sikafloor®, SikaDur® and Sikagard® range of materials.
The concrete or screed substrate has to be primed or levelled in order to achieve an even surface.
High spots must be removed by e.g. grinding. All dust, loose and friablematerial must be completely removed from all surfaces before application of the product, preferably by brush and/or vacuum.
Steel and iron surfaces must be sandblasted (SA 2 ½).

MIXING

Mixing time

Prior to mixing stir Part A mechanically. When all of Part B has been added to Part A continuously mix for 3 minutes until a uniform mix has been achieved.
To ensure thorough mixing pour materials into another container and mix again to achieve a consistent mix.
Over mixing must be avoided to reduce air entrainment.
Mixing tools

Sikagard®-62 must be mechanically mixed using an electric power stirrer (300–400 rpm) or other suitable equipment.

 

APPLICATION

Prior to application, confirm substrate moisture content, r.h and dew point.
Coating : Sikagard®-62, can be applied with a distemper brush, a short-piled, solvent resistant, non-fuzzy roller or by airless spray equipment.

CLEANING OF TOOLS

Clean all tools and application equipment with Thinner C immediately after use. Hardened/cured material can only be mechanically removed.

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