Product Data Sheet Show all documents

Sikafloor®-542 EpoCem®

(former MTop 542ECC)

Water based, self smoothing epoxy-cemetitious under layer floor screed

Sikafloor®-542 EpoCem® is a three-component selfsmoothing floor topping based on epoxy-cementitious system, which on mixing yields a breathable, high performance floor topping. The finished topping exhibits temporary moisture barrier.

  • Water based - no fire hazard nor toxic fumes.
  • Self smoothing - easy to spread and finish.
  • Excellent mechanical strengths.
  • Seamless - can easily maintain hygienic condition.
  • Breathable – excellent adhesion and finish.
Product Data Sheet Show all documents

Usage

Sikafloor®-542 EpoCem® is formulated for underlay application as temporary moisture barrier for resin based floor finishes. Application areas include:
  • Hospitals, laboratories and medical clinics
  • Clean rooms and aseptic areas
  • Packing and storage areas
  • Automotive assembly areas & showrooms
  • Aircraft hangars & auxiliary areas
  • Refurbishing granolithic floor toppings
 

Advantages

  • Water based - no fire hazard nor toxic fumes.
  • Self smoothing - easy to spread and finish.
  • Excellent mechanical strengths.
  • Seamless - can easily maintain hygienic condition.
  • Breathable – excellent adhesion and finish.

Packaging

Pre-batched 21 kg units.

Part A

1 kg container

Part B

3 kg container

Part C

17 kg bag

Product Details

Product Information

Shelf Life

12 months from date of production

Storage Conditions

The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Density

Mixed ~2.10 kg/l
Technical Information

Shore D Hardness

> 80

(ASTM D 2240)

Abrasion Resistance

< 70 mg,1000 cycles, CS17 wheel

(ASTM D4060)

Compressive Strength

45 Mpa

(ASTM C579)

Tensile Strength in Flexure

10 Mpa

(BS 6319 Part 3)

Tensile Adhesion Strength

1.5 MPa (concrete failure)

(ASTM D4541)

Dry film thickness

2 - 4 mm

Application

Application Information

Mixing Ratio

Resin : Hardener : Filler = 1 : 3 : 17

Ambient Air Temperature

+10 °C min. / +30 °C max.

Relative Air Humidity

80 % max.

Substrate Temperature

+10 °C min. / +30 °C max.

Pot Life

20 Minutes at 25°C

Waiting Time / Overcoating

24 to 72 Hours at 25°C

Drying Time

24 Hours at 25°C
Consumption

Consumption

4.75 m2/21.0 kg pack at 2mm
Application steps

EQUIPMENT

Select the most appropriate equipment required for the project:

Substrate preparation

  • Abrasive blasting cleaning equipment
  • Planing machine
  • Scarifying machine
  • Shot blasting machine
  • Dismond grinding
  • For other types of preparation equipment, contact Sika Technical Services

Mixing

  • Electric double paddle mixer (300–400 rpm) with helix paddle
  • Forced action / rotating pan / double paddle or trough type mixer (300–400 rpm).
  • Scraper
  • Clean mixing containers
  • For other types of mixing equipment, contact Sika Technical Services

Application: Self-levelling screed

  • Mixed material carrier
  • Pin rack leveller
  • Trowels
  • Spiked roller
  • Squeegee

MIXING

Prior to mixing, shake Part A (white liquid) briefly until uniformly mixed. Then pour into Part B container and shake vigorously for at least 30 seconds. When dosing out of drums, uniformly mix Parts A and B separately before mixing together. Pour the mixed binder mixture (Parts A+B) into a suitable mixing container (capacity ~30 litres). Using an electric single or double paddle mixer or other similar equipment, gradually add Part C. Mix for a further 3.0 minutes until a uniform lump free mix has been achieved. To ensure thorough mixing, pour materials into another container and mix again for 30 second to achieve a smooth consistent mix. Mix full units only. Do not add water.

 

APPLICATION

Pour mixed Sikafloor®-542 EpoCem® onto the prepared primed substrate and spread evenly using a suitable trowel or pin leveller to the required thickness. Spike roller immediately in two directions at right angles to each other to remove trowel marks, aid air release, ensure an even thickness and obtain the required surface finish. A seamless finish can be achieved if a ‘wet’ edge is maintained during application.

CLEANING OF TOOLS

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

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