Sikafloor®-280

• 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
• Suitability as a Repair Material for Concrete Roads MEB-3, Sikafloor®-280, Polymer Institut, Test report No. P 1658

Epoxy

24 months from date of production

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.

All Density values at +23 °C.

~100 %

~100 %

EN 1504-2: Surface protection product for concrete - Coating

EN 13813: Resin screed material for internal use in buildings

Refer to Polymer Institut, Test report No. P 1658. Also includes impact resistance values.

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

*  No simultaneous chemical and mechanical exposure

Part A : Part B : Part C= 7.5 : 2.5 : 100 (by weight)

~2 min. / 10 mm max.

Additional layer thickness's can be applied in successive layers once each layer has cooled and hardened sufficiently. The surface of the freshly applied intermediate layers must be scratched to form a key for subsequent layers.

+10 °C min. / +30 °C max.

80 % max.

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.

+10 °C min. / +30 °C max.

≤ 4 % parts by weight

Test method: Sika®-Tramex meter, CM-measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet).

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

Before applying Sikafloor®-150/-151 on Sikafloor®-280 allow:

~2.2 kg/m²/mm

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc. For detailed information, refer to the System Data Sheets: Sikafloor® MultiDur ES-43.

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 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). Gradually add Part C quartz sand and if required Extender T. 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 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+C = 5 minutes.

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 APPLICATION

Porous substrates

Pour mixed Sikafloor®-150/-151 primer onto the prepared substrate and apply by brush, roller or squeegee. Ensure a continuous, pore free coat covers the substrate.

Confirm primer waiting /overcoating time has been achieved before applying subsequent products. Refer to individual primer Product Data Sheet.

Bonding bridge / impregnation:

Pour mixed Sikafloor®-150 primer onto the prepared substrate and apply by brush, roller or squeegee. Ensure a continuous, pore free coat covers the substrate.

Confirm primer waiting /overcoating time has been achieved before applying subsequent products. Refer to individual primer Product Data Sheet.

Screed mortar:
Apply the screed mortar evenly onto the tacky bonding bridge, using levelling boards, guide rails as necessary and suitable application tools. After a short waiting time and allowing mortar to start hardening, compact and finish the screed with a trowel or teflon coated power float (usually 20–90 rpm). Power floats must only be used on mortar layers > 8 mm.

Repair mortar:

The repair mortar must be applied onto the tacky bonding bridge between the minimum and maximum layer thicknesses without the formation of voids. Where layers are to be built up, each layer must be allowed to harden before applying subsequent layers “wet on wet”.

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