Product Data Sheet
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Sikagard® FlexCoat

Two-component, polymer-modified, waterproof, cement-based coating system

Sikagard® FlexCoat is a polymerized cementitious protective coating. It consists of a unique rubber-like polymer liquid (Part A) mixed at the time of application with a cement aggregate blend (Part B).

  • It can be applied over almost any clean, sound surface e.g. concrete, block, masonry, etc. for a number of different floor, wall and roof uses.
  • Extraordinary adhesion coupled with its ability to withstand prolonged pedestrian and light vehicular traffic. In these respects, the material is far superior to conventional cementitious coatings.
  • Provides a waterproof coating which substantially reduces or prevents water penetration, freeze-thaw scaling and concrete carbonation.
  • “Breathable” coating which releases normal entrapped vapor without loosening or blistering.
  • Available in natural cement color.
  • Sikalastic® Traffic Systems can be top coated with Sikagard® FlexCoat cement based systems. Please refer to the spec component of the Sikalastic®/Sikagard® Flexcoat Hybrid System.
Product Data Sheet
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Usage

  • Balcony deck surfacing
  • Concrete exterior restoration
  • Sidewalk resurfacing
  • Wall refinishing and installation coating
  • Stadium renovation
  • Swimming pool walkways
 

Advantages

  • It can be applied over almost any clean, sound surface e.g. concrete, block, masonry, etc. for a number of different floor, wall and roof uses.
  • Extraordinary adhesion coupled with its ability to withstand prolonged pedestrian and light vehicular traffic. In these respects, the material is far superior to conventional cementitious coatings.
  • Provides a waterproof coating which substantially reduces or prevents water penetration, freeze-thaw scaling and concrete carbonation.
  • “Breathable” coating which releases normal entrapped vapor without loosening or blistering.
  • Available in natural cement color.
  • Sikalastic® Traffic Systems can be top coated with Sikagard® FlexCoat cement based systems. Please refer to the spec component of the Sikalastic®/Sikagard® Flexcoat Hybrid System.

Packaging

3.5 gal (13.2 L) unit55 lb (25 kg) bag
2.5 gal (9.5 L) liquid

Product Details

Product Information

Shelf Life

12 months from date of production if stored properly in original, unopened and undamaged sealed packaging.

Storage Conditions

Store dry at 40–95 °F (4–35 °C).

Protect from freezing. If frozen, discard material.

 
System information

System Structure

Elongation

12%

Shore Hardness

Durometer “A” - 82
Technical Information

Impact Strength

2 lb (0.9 kg) steel ball dropped from 8 ft (2.4 m) height on to coated steel plate

No cracking or detachment

Compressive Strength

2,440 psi (16.8 MPa)

(ASTM C-109)

75 °F (24 °C)

50 % R.H.

Tensile Strength

430 psi (3.0 MPa)

(ASTM C-190)

75 °F (24 °C)

50 % R.H.

Tensile Adhesion Strength

28 days515 psi (3.6 MPa)

* 73 °F (23 °C) and 50 % R.H.

Reaction to Fire

Complies as Class A

(UL790)

Flame Spread - 4
Smoke Density - 0

(ASTM E-84

Steiner Tunnel Test)

Behavior after Artificial Weathering

60 cycles

No visible degradation

*(Method 1 at 75 °F (24 °C) and 50 % R.H.)

Permeability to Water Vapor

1.96 perms/in.

(ASTM E-96)

Diffusion Resistance to Water Vapor

Resistance to Wind-Driven Rain

5” water pressure and

60 gal./hr. water flow

No water or dampness noted on back of test panels

Water Absorption

21 days water immersion

75 °F (24 °C) and 50 % R.H.

< 2 %

Weight gain by 4" (101.6 mm) coated concrete cube

Carbonation Resistance

Hydrocarbon Substances Resistance

21 days repeated reapplication of gasolineNo softening or attack motor oil SAE-10, jet fuel

Service Temperature

Condition material to 65–75 °F (18–24 °C) before using.

Application

Application Information

Layer Thickness

Coat thicknessNumber of coat
60 mils2

Ambient Air Temperature

> 50 ºF (10 ºC)

Substrate Temperature

> 50 ºF (10 ºC)
Consumption

Coverage

250 ft2/coat/unit

(Coverage figures do not include allowance for surface profile and porosity or material waste)
Application steps

MIXING

  • Place the liquid component in appropriate mixing container.
  • It is always recommended to start mixing with approximately 80 % of the liquid.
  • Add the powder while continuing to mix with a low-speed drill (400–600 rpm) and paddle.
  • Mix to a uniform consistency, maximum 3 minutes.

APPLICATION

  • Pre-wet surface to SSD (Saturate Surface Dry).
  • Insure good intimate contact with the substrate is achieved.
  • Sikagard® FlexCoat can be applied in multiple coats by brush, roller, trowel or spray to a typical thickness of 60 mils (1.5 mm).
  • Apply first coat of Sikagard® FlexCoat.
  • Apply following coats (one or two depending on service conditions/ requirements) by brush, trowel roller or spray.
  • Finish to specified texture.
  • Protect newly applied Sikagard® FlexCoat from direct sunlight, wind, rain and freezing.
  • Color Finish (optional) – apply Sikagard ® FlexCoat ATC acrylic top coat for color finish, when specified, in two coats by roller, brush or spray.

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