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General Technical Data

Australian Standards

There are currently no Australian Standards that cover the manufacture or installation of floating timber floors. It is therefore important both to select a reputable product and to specify that installation should be carried out in strict accordance with manufacturers instructions.

Thermal Resistance - ("R" Rating)

The “R” Rating is a measure of thermal resistance. In the instance of flooring, it is the measure of the floor system’s ability to resist temperature load from one side of the panei and/or underlay, to the other.

This information is of benefit when assessing the performance if in-floor heating systems. The measure is commonly required when evaluating a building’s all round energy efficiency.

The “R” Ratings for Readyflor with both Standard Combi-Lay and Quiet Step Combi-Lay Underlays are:

  • Readyflor 14mm on Premium Combi-Lay R = 0.17
  • Readyflor 14mm on Quiet Step Combi-Lay R = 0.19

Indentation Resistance

Indentation resistance of Premium Floors Timber range varies between the different hardwood top layers, some hardwoods being more indentation resistant than others. In Australia, we use the Janka Hardness Rating. To conduct a Janka Hardness Test, a steel ball, 10mm. in diameter is pressed into a sample of hardwood until it has penetrated the sample 5mm. The force applied to the ball to create the indentation is then reported in kiloNewtons (kN). Obviously, the higher the result, the greater the indentation resistance and the better that timber will withstand indentations caused by stilletto heels etc. It is important to note however that we are usually only comparing degrees of resistance in that almost all timbers will show an indentation after being subjected to a falling heavy object. Some timbers will simply show deeper indentations than others, the difference in some cases being incredibly small.

Below is a list of indentation resistance results for the timbers in the Premium Floors. As the Janka Ratings have only been conducted on some overseas species, some results have been listed as approximate results. These approximate results have been ascertained using a combination of years of comparative experience, foreign standards and technical data collected on individual species.


  • American/European Oak ave. 6.0
  • Kempas ave. 7.0
  • Tasmanian Oak ave. 5.6
  • Merbau ave. 8.6
  • Blackbutt ave. 9.1
  • Walnut ave. 4.5
  • Jarrah ave. 8.5
  • Spotted Gum ave. 11
  • Sydney Blue Gum ave. 7.5


The moral of the story is that, like all testing mentioned in this section, indentation resistance is only one aspect of evaluating which timber to select.


Remember that dark, pink or reddish timbers will oxidise, or turn darker in the presence of UV light. This means that Merbau, Kempas, and Jarrah will all turn darker and become generally more uniform in colour over the first six or so months, after which this natural process stops.

Additional Technical Data

Height Tolerances

Quick-Step Timber is manufactured in accordance with all relevant European and German Standards. In relation to height variation between boards, 0.5mm (total height variation) is acceptable.

Glue Materials

Synteco 1352, made by Casco Nobel in Sweden, is the heat cure adhesive used to bond the three layers of Readyflor together. In relation to formaldehyde emission, chamber tests have shown that emission value is 0.02mg./m3 formaldehyde. The European Standard requires no more than 0.125m3.

Timber Treatment Solutions

We use Timbor preservative, a boran compound that is highly effective against insects, which is applied by vacuum pressure. Timbor is in the non-harmful category according to the EC directive and the classification meets the HUD “American Standard” no special precautions are normally required.

Should you require any further technical information, please feel free to contact your local Premium Floors Office.