Sikafloor® P 920

High Performance, Odorless Self-smoothing Primer based on Xolutec technology

Sikafloor® P 920 is a three-component, high-performance polyurethane scratch coat primer based on Xolutec technology that is environmentally friendly, odourless and easy to apply. It is not to be used as a topcoat, but as a special primer for the Sikafloor® XTC system, which must be covered with the topcoat Sikafloor® BC 920.

  • Odourless - environmentally friendly and harmless to the body.
  • Moisture Tolerant - Fast application, can be applied to fresh concrete up to 10 days old.
  • Fast curing at low temperatures - can be recoated after 6 hours at room temperature.
  • Good sealing effect - effectively seals the substrate.
Product Data Sheet Show all documents

Overview

Usage

Sikafloor® P 920 may only be used by experienced professionals. Sikafloor® P 920 is recommended as a primer for the Sikafloor® XTC system, in combination with the topcoat Sikafloor® BC 920.  

Advantages

  • Odourless - environmentally friendly and harmless to the body.
  • Moisture Tolerant - Fast application, can be applied to fresh concrete up to 10 days old.
  • Fast curing at low temperatures - can be recoated after 6 hours at room temperature.
  • Good sealing effect - effectively seals the substrate.

Packaging

Part A

4.0 kg/pail

Part B

5.25 kg/pail

Part C

7.5 kg/bag

Part A+B+C16.75 kg

Colour

Ash gray

Product Details

CERTIFICATES AND TEST REPORTS

GB/T 22374-2018

Composition

Polyurethane

Shelf life

Part A

12months

Part B

12months

Part C

24months

Storage conditions

Should be stored away from direct sunlight on a pallet away from the ground and protected from rain.

Density

Mixture: 1.70~1.75 kg/L (20°C)

Volatile organic compound (VOC) content

≤ 60 g/L

Tensile adhesion strength

≥ 2.0 MPa (failure in concrete)

Resistance to alkalinity

Saturated Ca(OH)2 for 48h

Application

Mixing ratio

Part A : Part B: Part C = 4.0 : 5.25 : 7.5 (by weight)

Material temperature

+10°C min. / +25°C max.

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

≤ 8% pbw moisture content.
Test method: Sika®-Tramex meter or CM - measurement.
No rising moisture according to ASTM (Polyethylene-sheet).

Pot Life

TemperaturesTime
+20°C~ 15 minutes

Waiting time to overcoating

Before applying Sikafloor® BC 920 on Sikafloor® P 920 allow:

Substrate temperatureMinimumMaximum
+20°C

~6 hours

~48 hours

Consumption

Standard comsumption: 1.2~1.5 kg/m2

For the substrate with hig porosity, it is recommended to apply two scratch layer of Sikafloor® P 920  to ensure good sealing effect of the substrate and to avoid defects and imperfections of the topcoat. Two scratch layer as follow:

Layer

Comsumption

First scratch layer

0.8~1.0 kg/m2

Second scratch layer

0.4~0.5 kg/m2

Note:These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level and
wastage etc.

EQUIPMENT

Sikafloor® P 920 must be thoroughly mixed using a low speed electric stirrer (400 -600rpm) or other suitable equipment.

MIXING

Before mixing we should confirm the Temperature Requirements again:
▪ Substrate temperatures: 10°C – 30°C
▪ Material temperatures: 10°C – 25°C
Very low or very hot temperatures will make application more difficult and careful consideration should be given to storage of materials. In the cold weather conditions, precondition materials by keeping it in a heated room. In hot weather conditions, some form of airconditioned storage is required. Preconditioned materials at 18-25°C will reduce the possibilities of flash/slow setting and other defects

 

Mixing:

Sikafloor® P 920 is supplied in three parts; Part A, B, C. The typical mixing steps are as follows:

1. Mix part A with a high speed drill with a suitable paddle until homogeneous, making sure that the drill reaches the bottom and sides of the tank.

2. Pour part B into a clean bucket and add the pre-mixed part A to it while mixing at high speed.

3. Continue mixing for 1 minute to form a completely mixed homogeneous material. It should be noted that the same mixing time should always be maintained to ensure a consistent colour and to avoid the introduction of excess air.

4. Gradually add part C while continuing to mix and mix until the filler is evenly dispersed, usually 1-2 minutes.

APPLICATION

  • Sikafloor® P 920 shall be applied to a cured scratch coat of Sikafloor® P 920 of 0.8mm nominal thickness at a consumption rate of 1.2 – 1.5 kg/m2 .
  • The scratch coat is applied to the prepared substrate using a steel trowel, pin rake trowel or squeegee. The scratch coat shall be allowed to dry completely to achieve a tack free surface before overcoating with topcoat.
  • Before progressing further, ensure that substrate is fully sealed with scratch coat primer and if required apply another coat of scratch primer to ensure complete sealing of substrate.
  • Sealed substrate is very important to ensure the performance of Sikalfoor XTC as a system Please take note of the overcoating times for scratch coat before applying the Bodycoat.

CLEANING OF EQUIPMENT

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

 

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