Sikafloor®-161
2-part epoxy primer, levelling mortar, intermediate layer and mortar screed
Sikafloor®-161 is an economic, two part, low viscosity epoxy resin. "Total solid epoxy composition according to the test method Deutsche Bauchemie e.V. (German Association for construction chemicals)"
- Low viscosity
- Good penetration
- Excellent bond strength
- Easy application
- Short waiting times
- Multi-purpose
Usage
- Priming concrete substrates, cement screeds and epoxy mortars
- For low to medium absorbent substrates
- Primer for the Sikafloor®-263 SL and Sikafloor®-264 economic flooring systems
- 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
| Part A | 15.8 kg container (10 ltr) |
| Part B | 4.2 kg container (4.2ltr) |
| Part A+B | 20 kg ready to mix unit (14.2 ltr) |
Colour
| Resin - Part A | brownish-transparent, liquid |
| Hardener - Part B | transparent, liquid |
Product Details
APPROVALS / CERTIFICATES
- Synthetic resin screed material according to EN 13813:2002, Declaration of Performance 02 08 01 02 005 0 000004 1008, certified by notified factory production control certification body 0921, and provided with the CE marking.
- Coating for surface protection of concrete according to EN 1504-2:2004, Declaration of Performance 02 08 01 02 005 0 000004 1008, certified by notified factory production control certification body 0921, and provided with the CE marking.
- “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 DIN EN 13578:2004. Proof statement P 6239
Composition
Epoxy
Shelf life
24 months from date of production
Storage conditions
The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.
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 mass
~100 %
Solid content by volume
~100 %
Shore D Hardness
| ~76 (7 days / +23 °C) | (DIN 53 505) |
Compressive strength
| > 45 N/mm² (mortar screed, 28 days / +23 °C / 50 % r.h.) | (EN13892-2) |
Mortar screed: Sikafloor®-161 mixed 1:10 with Sikafloor®-280 filler
Tensile strength in flexure
| ~15 N/mm² (mortar screed, 28 days / +23 °C / 50 % r.h.) | (EN13892-2) |
Tensile adhesion strength
> 1.5 N/mm² (failure in concrete) | (ISO 4624) |
Temperature resistance
| Exposure* | Dry heat |
| Permanent | +50 °C |
| Short-term max. 7 days | +80 °C |
| Short-term max. 12 hours | +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 approx. 3–4 mm thickness.
Application
Mixing ratio
Part A : Part B = 79 : 21 (by weight)
Ambient air temperature
+10 °C min. / +30 °C max.
Relative air humidity
80 % r.h. max.
Dew point
Beware of condensation.
The substrate and uncured applied floor material must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the floor finish. Low temperatures and high humidity conditions increase the probability of blooming.
Substrate temperature
+10 °C min. / +30 °C max.
Substrate moisture content
≤ 6 % pbw moisture content using the Sika® - Tramex meter (at the time of application).
Note 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 minutes |
| +20 °C | ~25 minutes |
| +30 °C | ~15 minutes |
Curing time
Before applying non-solvent based products on Sikafloor®-161 allow:
| Substrate temperature | Minimum | Maximum |
| +10 °C | 24 hours | 4 days |
| +20 °C | 12 hours | 2 days |
| +30 °C | 8 hours | 24 hours |
Before applying solvent based products on Sikafloor®-161 allow:
| Substrate temperature | Minimum | Maximum |
| +10 °C | 36 hours | 6 days |
| +20 °C | 24 hours | 4 days |
| +30 °C | 16 hours | 2 days |
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Consumption
| Coating System | Product | Consumption |
| Priming | 1–2 x Sikafloor®-161 | 1–2 × 0,35–0,55 kg/m² |
| Levelling mortar fine (surface roughness < 1 mm) | 1 pbw Sikafloor®-161 + 0,5 pbw quartz sand (0,1–0,3 mm) | 1,7 kg/m²/mm |
| Levelling mortar medium (surface roughness up to 2 mm) | 1 pbw Sikafloor®-161 + 1 pbw quartz sand (0,1–0,3 mm) | 1,9 kg/m²/mm) |
| Intermediate layer (self-smoothing 1.5 to 3 mm) | 1 pbw Sikafloor®-161 + 1 pbw quartz sand (0,1–0,3 mm) | 1,9 kg/m²/mm |
| + optional broadcast quartz sand 0,4–0,7 mm | ~4,0 kg/m² | |
| Bonding bridge | 1–2 × Sikafloor®-161 | 1–2 × 0,3–0,5 kg/m² |
| Epoxy screed / Repair Mortar (15–20 mm layer thickness ) | 1 pbw Sikafloor®-161 + 8 pbw quartz sand | 2.2 kg/m²/mm |
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.
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, r.h. and dew point. If > 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 backrolling 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.
Epoxy screed / repair mortar
Apply the mortar screed evenly on the still “tacky” bonding bridge, using levelling battens and screed rails as necessary. After a short waiting time compact and smoothen the mortar with a trowel or Teflon coated power float (usually 20 - 90 rpm).
CLEANING OF EQUIPMENT
Clean all tools and application equipment with Thinner C immediately after use. Hardened material can only be removed mechanically.