Monday, June 25, 2012

Method Statement for Epoxy Textured Coating

Epoxy Textured Coating is applied to be slip resistant coating for concrete and cement screeds. This flooring system can be subjected to normal up to medium heavy mechanical and chemical loading. It is designed for production areas, storage shed and assembly areas or exhibition areas etc.

Advantages of textured coating are slip resistant, good abrasion resistant, good chemical resistance, easy to clean etc.

This method statement is specified for the epoxy flooring system using Sikafloor 264 and other supporting products.

System build-up  for Sikafloor 264  textured coating

1. Primer (2 solutions, depend of the substrate porosity)

a. Less absorbent/dense substrate Primer 1 / 2 x Sikafloor 2420 + 25 % Thinner C  0.1 – 0.2 kg/m²

b. Normal substrate / Porous substrate Primer*   1 x Sikafloor 161  0.3 – 0.5 kg/m²

2.If needed, moisture barrier (if > 4% pbw moisture content into the substrate)

Epocem Primer ( Primer coat)  1 x Epocem Primer  Approximately 0.15 Kg/m²

Moisture barrier (Body coat)  1 x Sikafloor 81 Epocem (2 mm minimum):  2.1 kg/m²/mm

3.Roller and textured coat

1st coat  Roller coating 1 X Sikafloor 264:  0.25 – 0.3 kg/m²

2nd coat  Textured coating 1 X Sikafloor264 + Extender T (2%): 0.4 – 0.5 kg/m²  + 0.008-0.010 kg/m²

(Approx. system thickness from 0.45 to 0.5 mm, without moisture barrier)

Note: In cases of limited exposure and normal absorbent concrete substrates priming is not necessary.

Substrate preparation

The concrete substrate must be sound and of sufficient compressive strength (minimum 25 N/mm2) with a minimum pull off strength of 1.5 N/mm2

Prior to application, confirm substrate moisture content, relative humidity and dew point. Moisture content must  be  not  greater than 4%.

Test method:  Sika Tramex meter  or  Standard  Test method for indication of moisture in concrete by plastic sheet method according to ASTM D4263

Concrete  substrates  must  be  prepared  mechanically  using  abrasive  blast  cleaning  or  scarifying equipment to remove cement laitance and achieve an open textured surface.  Weak concrete must be  removed and  surface defects  such as blowholes and voids must be  fully exposed. All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush and/or vacuum. If in doubt, apply a test area first.

Application of Epoxy Textured Coating  using Sikafloor 264 system:

Primer coat: Make sure that a continuous, pore free coat covers the substrate. If necessary, apply two priming coats.

Seal coat: Sikafloor 264 as coating can be applied by short-piled roller for the 1st layer. The 2ndlayer is applied back-rolled (crosswise) with a textured roller.


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