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Sikafloor®-161

2-part epoxy primer, levelling mortar and intermediate layer

Sikafloor®-161 is an economic, two part, low viscosity epoxy resin. Suitable for use in hot and tropical climatic conditions.

  • Low viscosity
  • Good penetration
  • Excellent bond strength
  • Easy application
  • Short waiting times
  • Multi-purpose
 
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Usage

  • For priming concrete substrates, cement screeds and epoxy mortars
  • For low to medium absorbent substrates
  • Primer for the Sikafloor®-263 SL, Sikafloor®-264 economic flooring systems and Sikalastic®-800 series
  • Binder for levelling mortars and mortar screeds
  • Intermediate layer underneath Sikafloor®-263 SL and Sikafloor®-264

Advantages

  • Low viscosity
  • Good penetration
  • Excellent bond strength
  • Easy application
  • Short waiting times
  • Multi-purpose
 

Packaging

Please refer to local country price list for available packaging sizes:

Part A

3.95 kg containers

Part B

1.05 kg containers

Part A + B

5 kg ready to mix units

Part A

15.8 kg containers

Part B

4.2 kg containers

Part A + B

20 kg ready to mix units

Part A

19.75 kg containers

Part B

5.25 kg containers

Part A + B

25 kg ready to mix units

Part A

3 drums 220 kg

Part B

1 drum 177 kg

Part A + B

3 drums Part A (220 kg) + 1 drum part B (177 kg) = 837 kg

Colour

Resin - Part A

Brownish-transparent, liquid

Hardener - Part B

Transparent, liquid

Product Details

Sustainability / Certifications / Approvals

SUSTAINABILITY

Conformity with LEED v2009 IEQc 4.2: Low-Emitting Materials: Paints and Coatings

APPROVALS / CERTIFICATES

  • Sikafloor®-161 follows the requirements of EN 1504 - 2 : 2004 and EN 13813 : 2002
  • “Products and systems for the protection and repair of concrete structures – Test method – Compatibility on wet concrete when exposed to the effects of humidity from the rear” according to the EN 13578 : 2004. Proof statement P 6239.
Product Information

Composition

Epoxy

Shelf life

24 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.

Density

Part A

~1.6 kg/l

Part B

~1.0 kg/l

Mixed Resin

~1.4 kg/l

All density values at +23 °C

Solid content by weight

~100 %

Solid content by volume

~100 %
Technical Information

Shore D Hardness

~76 (7 d / +23 °C)

(DIN 53 505)

Tensile Adhesion Strength

> 1.5 N/mm² (failure in concrete)

(ISO 4624)

Temperature Resistance

Exposure*

Dry heat

Permanent

+50 °C

Short-term max. 7 d

+80 °C

Short-term max. 12 h+100 °C

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

*No simultaneous chemical and mechanical exposure and only in combination with Sikafloor® systems as a broadcast system with approximately 3 - 4 mm thickness.

Application

Application Information

Mixing Ratio

Part A : Part B = 79 : 21 (by weight)

Ambient Air Temperature

+10 °C min. / +35 °C max.

Relative Air Humidity

80 % r.h. 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 floor finish.

Note: Low temperatures and high humidity conditions increase the probability of blooming.

Substrate Temperature

+10 °C min. / +35 °C max.

Substrate Moisture Content

< 6 % pbw moisture content using the Sika® - Tramex meter (at the time of application).
Please note that the moisture content must be < 4 % pbw when using the CM measurement or Oven-dry-method. Test method: Sika®-Tramex meter, CM - measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet).

Pot Life

Temperature

Time

+10 °C

~50 min

+20 °C

~25 min

+30 °C~15 min

Curing Time

Before applying solvent free products on Sikafloor®-161 allow:

Substrate temperature

Minimum

Maximum

+10 °C

24 h4 d

+20 °C

12 h2 d
+30 °C8 h24 h

Before applying solvent containing products on Sikafloor®-161 allow:

Substrate temperature

Minimum

Maximum

+10 °C

36 h6 d

+20 °C

24 h4 d
+30 °C16 h2 d

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

Consumption

Coating System

Product

Consumption

Priming1 - 2 x Sikafloor®-1611 - 2 x 0.25 - 0.55 kg/m²

Levelling mortar fine (surface roughness < 1 mm)

1 pbw Sikafloor®-161 + 0.5 pbw Sikadur®-504~1.7 kg/m²/mm
Levelling mortar medium (surface roughness up to 2 mm)1 pbw Sikafloor®-161 + 1 - 3 pbw Sikadur®-504~1.9 kg/m²/mm)
Intermediate layer (self-smoothing 1.5 - 3 mm)1 pbw Sikafloor®-161 + 1 - 3 pbw Sikadur®-504

~1.9 kg/m²/mm

+ optional broadcast quartz Sikadur®-507~4.0 kg/m²
Bonding bridge1 - 2 x Sikafloor®-1611 - 2 x 0.3 - 0.5 kg/m²

Note: These figures are theoretical and do not allow for any additional material required due to surface porosity, surface profile, variations in level or wastage etc.
Application steps

MIXING

Prior to mixing, stir part A mechanically. When all of part B has been added to part A, mix continuously for 3 minutes until a uniform mix has been achieved. When parts A and B have been mixed, add the quartz sand and if required the Extender T and mix for a further 2 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 minimise air entrainment.


Mixing Tools

Sikafloor®-161 must be thoroughly mixed using a low speed electric stirrer (300 - 400 rpm) or other suitable equipment. For the preparation of mortars use a forced action mixer of rotating pan, paddle or trough type. Free fall mixers should not be used.

APPLICATION

Prior to application, confirm substrate moisture content, relative humidity and dew point. If more than 4 % pbw moisture content, Sikafloor® EpoCem® may be applied as a T.M.B. (temporary moisture barrier) system.

Primer
Make sure that a continuous, pore free coat covers the substrate. If necessary, apply two priming coats. Apply Sikafloor®-161 by brush, roller or squeegee. Preferred application is by using a squeegee and then back rolling crosswise.

Levelling mortar
Rough surfaces need to be levelled first. Apply the levelling mortar by squeegee/trowel to the required thickness.

Intermediate layer
Sikafloor®-161 is poured, spread evenly by means of a serrated trowel. Roll immediately in two directions with spiked roller to ensure even thickness and if required broadcast with quartz sand, after about 15 minutes (at +20 °C) but before 30 minutes (at +20 °C), at first lightly and then to excess.

Bonding bridge
Apply Sikafloor®-161 by brush, roller or squeegee. Preferred application is by using a squeegee and then backrolling crosswise.

CLEANING OF EQUIPMENT

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

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