Sikafloor®-161
Epoxy Primer, Levelling Mortar, Intermediate Layer and Mortar Screed
Sikafloor®-161 is a 2-part, low viscosity, multipurpose, epoxy resin which can be used as an epoxy primer, levelling mortar, intermediate layer and mortar screed. Internal and external use.
- Low viscosity
- Good penetration
- Good bond strength
- 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 N and Sikafloor®-264 N economic flooring systems
- Binder for levelling mortars and mortar screeds
- Intermediate layer underneath Sikafloor®-263 SL N and Sikafloor®-264 N
Advantages
- Low viscosity
- Good penetration
- Good bond strength
- Short waiting times
- Multi-purpose
Packaging
| Part A | 23,7 kg container |
| Part B | 6,3 kg container |
| Part A+B | 30 kg ready to mix unit |
| Part A | 220 kg drum |
| Part B | 177 kg, 59 kg drum |
| Part A+B | 1 Drum Part A (220 kg) + 1 drum Part B (59 kg) = 279 kg 3 Drums Part A (220kg) + 1 drum Part B (177 kg) =837 kg |
Refer to current price list for packaging variations.
Colour
| Part A | brownish-transparent, liquid |
| Part B | transparent, liquid |
Product Details
SUSTAINABILITY
- Conformity with LEED v4 EQc 2: Low-Emitting Materials
APPROVALS / CERTIFICATES
- CE Marking and Declaration of Performance to EN 1504-2 - Surface protection product for concrete - Coating
- CE Marking and Declaration of Performance to EN 13813 - Resin screed material for internal use in buildings
- Coating Compatibility DIN EN 13578, Sikafloor®-161 / -264, Polymer Institut, Test report No. 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 all parts, mix separately part A (resin) using a low speed single paddle electric stirrer (300 - 400 rpm). Add part B (hardener) to part A and mix part A + B continuously for 3,0 minutes until a uniform mix has been achieved. When parts A and B have been mixed. Using a double paddle (axis) electric stirrer (>700W), pan type revolving or forced action mixer or other suitable equipment (free fall mixers must not be used). If required, gradually add the appropriate granulometry of dried quartz sand and if required Extender T. Mix for a further 2,0 minutes until a uniform mix has been achieved. To ensure thorough mixing pour materials into another container and mix again to achieve a smooth consistent mix. Excessive mixing must be avoided to minimise air entrainment. During the final mixing stage, scrape down the sides and bottom of the mixing container with a flat or straight edge trowel at least once to ensure complete mixing. Mix full units only. Mixing time for A+B+quartz sand = 5,0 minutes.
APPLICATION
Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.
Prior to application, confirm substrate moisture content, relative air humidity, dew point, substrate, air and product temperatures. If moisture content > 4% parts by weight, Sikafloor® EpoCem® may be applied as a Temporary Moisture Barrier (T.M.B.) system.
Primer
Pour mixed Sikafloor®-161 onto the prepared substrate and apply by brush, roller or squeegee then back roller in two directions at right angles to each other. Ensure a continuous, pore free coat covers the substrate. If necessary, apply two priming coats.
Confirm primer waiting /overcoating time has been achieved before applying subsequent products. Refer to individual primer Product Data Sheet.
Levelling mortar
Apply the levelling mortar by squeegee/trowel to the required thickness.
Intermediate layer
Pour mixed Sikafloor®-161 onto the prepared substrate and spread evenly using a serrated trowel to the required thickness. Roll immediately in two directions at right angles to each other with a spiked roller to ensure even thickness and if required broadcast with quartz sand. Broadcast between ≥15 minutes minimum, ≤30 minutes maximum (at+20°C), lightly at first and then to excess.
Bonding bridge
Pour mixed Sikafloor®-161 onto the prepared substrate and apply by brush, roller or squeegee. For epoxy screed, back roller in two directions at right angles to each other. Ensure a continuous, pore free coat covers the substrate. If necessary, apply two priming coats.
Epoxy screed / repair mortar
Apply the repair or screed mortar onto the “tacky” bonding bridge. For the screed, use levelling battens and screed rails as necessary. After a short waiting time, compact and smoothen the mortar with a trowel. For the screed, a teflon coated power float (~20 - 90 rpm) is recommended.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with Thinner C immediately after use. Hardened material can only be removed mechanically.