Product Data Sheet
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Sika MonoTop®-620 MY

Pore sealer / fairing coat

Sika MonoTop®-620 MY is a one-part cementitious polymer-modified mortar containing silica fume. It is used as a superior finishing and protective top coat for concrete and concrete repair patches.

  • One part system, requires only the addition of water
  • Easily applied and worked
  • Application by trowel or spray
  • Adjustable consistency to suit application
  • High mechanical strengths
  • Excellent bonding to substrate
  • Non toxic
  • Non corrosive
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Product Data Sheet
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Usage

  • As a pore sealer/finishing coat to concrete, mortar patches and screeds. It can be used in vertical, horizontal and overhead applications
  • Restores the appearance of honeycombed or surface impaired concrete
 
  • As a thin skin protective coating to concrete where the reinforcement is susceptible to corrosion
  • To repair small defects on edges and joint sides, to form and finish joints and covings

Advantages

  • One part system, requires only the addition of water
  • Easily applied and worked
  • Application by trowel or spray
  • Adjustable consistency to suit application
  • High mechanical strengths
  • Excellent bonding to substrate
  • Non toxic
  • Non corrosive

Packaging

25 kg bag

Colour

Light grey mortar

Product Details

Product Information

Shelf Life

6 months from the date of production

Storage Conditions

Store properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +10 °C and +25 °C. Keep away from direct sunlight, rain and water.

Density

~1.2 kg/l
System information

System Structure

Sika MonoTop® System comprises:

  • Sika MonoTop®-910N bonding bridge and reinforcement protection
  • Sika MonoTop®-615 SD or Sika MonoTop® R repair mortar
  • Sika MonoTop®-620 MY pore sealer / fairing coat
Technical Information

Compressive Strength

30–35 N/mm² (28 days / +25 °C)

(ASTM C109)

Application

Application Information

Mixing Ratio

4.5 L of clean water per 25 kg bag

Fresh Mortar Density

~2.0 kg/l

Layer Thickness

1.5–5.0 mm (per coat)

Ambient Air Temperature

+5 °C min. / +35 °C max.

Substrate Temperature

+5 °C min. / +35 °C max.

Pot Life

60 minutes
Consumption

Consumption

~1.65 kg of powder per m² per 1 mm thickness (depending on substrate condition)
Application steps

MIXING

Add the powder to the desired quantity of water. Mix with an electric drill and mixing paddle attachment at 500 rpm. Mixing at higher speeds may entrain air which will affect the finishing properties of the mortar.

APPLICATION

Sika MonoTop®-620 MY must be applied to a pre-dampened substrate. Apply by trowel or by air driven spray equipment.

 

Best results are obtained when the substrate and ambient temperatures are falling. After application, when the mortar has stiffened but not dried, various methods may be employed to obtain the required surface finish, for example plasterer's tools to obtain a flat smooth even surface, sponge finish, etc. The addition of water to the surface to obtain the desired finish is not recommended as this may cause colour variations and surface cracking.

CLEANING OF TOOLS

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

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