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Sikafloor-359 N, Tough-elastic, non-yellowing polyurethane seal coat

Sikafloor-359 N, Tough-elastic, non-yellowing polyurethane seal coat

Flooring
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Chemical Base Polyurethane
Consumption 0.8 - 1.0 kg/m²
Resistance to impact N/A
Appearance Resin - coloured & liquid, Hardener - transparent, liquid
Ambient Air Temperature +10 °C min. / +30 °C max.
Color RAL 3003
Application Thickness N/A

Sikafloor®-359 N is a two part tough-elastic, coloured, non-yellowing, polyurethane seal coat.

  • Tough-elastic
  • Good mechanical and chemical resistance
  • Watertight
  • Good opacity
  • Non-yellowing
  • Matt finish
  • Easy application
  • Slip resistant surface possible
Usage
  • Abrasion resistant seal coat with high mechanical resistance for broadcast systems with crack-bridging properties in industrial flooring.
  • Particularly suitable for car park decks, ramps and warehouses, etc.
Advantages
  • Tough-elastic
  • Good mechanical and chemical resistance
  • Watertight
  • Good opacity
  • Non-yellowing
  • Matt finish
  • Easy application
  • Slip resistant surface possible
 
Packaging

Part A

25.35 kg containers

Part B

7.15 kg containers

Part A+B

32.5 kg ready to mix units
Colour

Resin - part A

coloured, liquid

Hardener - part B

transparent, liquid

Available in RAL 3003, RAL 5010, RAL 6010, RAL 7016, RAL 7031
Technical Information
Shore D Hardness

~52 (7 days / +23 °C)

(DIN 53 505)

Abrasion Resistance

160 mg (CS 10/1000/1000) (7 days / +23 °C)

(DIN 53 505)

Tensile adhesion strength

> 1.5 N/mm2 (failure in concrete)

(EN 13892-8)

Chemical Resistance

Resistant to many chemicals. Contact Sika technical service for specific information.
Application Information
Mixing Ratio

Part A : part B = 78 : 22  (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 floor must be at least 3 °C above dew point to reduce the risk of condensation or blooming on the floor finish.
Substrate Temperature

+10 °C min. / +30 °C max.
Substrate Moisture Content

< 4 % pbw moisture content.
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

~ 40 minutes

+20 °C

~ 25 minutes

+30 °C~ 15 minutes
Curing Time

Before applying Sikafloor®-359 N on Sikafloor®-375/ -350 N/ -161/ -264  broadcast allow:

Substrate temperature

Minimum

Maximum

+10 °C

24 hours

*

+20 °C

12 hours

*

+30 °C

6 hours

*

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

* Not applicable as the product will be applied on the structured surface provided by the quartz sand.
Applied Product Ready for Use

Temperature

Foot traffic

Light traffic

Full cure

+10 °C

~ 48 hours

~ 5 days

~ 10 days

+20 °C

~ 24 hours

~ 3 days

~ 7 days

+30 °C

~ 16 hours

~ 2 days

~ 3 days

Note: Times are approximate and will be affected by changing ambient conditions