Working Advice

Kronofloor has an ex-works moisture content of approximately 6%. It will expand or contract as it reacts to the atmospheric moisture of its surroundings. As a general guide a 1% change in moisture content will correspond to a 0.3mm per metre dimensional change in the length and width.

More rapid expansion must be expected in the winter period, but in environments with higher than average temperatures, such as nursing homes, shrinkage can occur.

These changes can be minimised by careful storage and conditioning.

Ideally all floors should be installed when the moisture content is the same as the level to which they will be exposed when in service, and only when the recommended conditioning is complete.

Always ensure that the building is weathertight before installing the floor, i.e. the roof is on, and windows and doors are fitted, this is an NHBC requirement.                     

The Building Regulations Part E have recently changed, with the following effects on the T&G market:

1. For internal joisted floors, within a single house, the minimum mass required is 15kg/m2. 22mm P5 has a mass of 15.3kg/m2.

Kronospan recommend 22mm P5 only for this application.

2.  For internal joisted floors, between apartments, the minimum mass required is 25kg/m2.  This application requires a thickness of 36mm to achieve the requirement.

For clarification of grade/thickness selection and joist spacings always refer to the British Standard Code of Practice for the Selection and Application of Particleboards, Oriented Strand Board (OSB), cement bonded particleboard and wood fibreboards for Specific Purposes.

For further information on storing, laying, fixing and finishing Kronofloor, please refer to the T&G brochure using the link below.

RESOURCES                              

 Please click here to download our T&G Chipboard brochure