PREPARATION AND INSTALLATION GUIDELINES
Oak flooring is a natural product and colour variations are to be expected.
- An expansion gap over the entire width or length of the floor is always necessary for any length/width of installation greater than 9 meters.
- We recommend the formula to calculate the expansion gap across the width of the installed floor is (2mm) expansion for every (1 metre) of floor.
- When laying the timber floor through several adjoining rooms, expansion joints must also be provided at every doorway.
- It is essential that the moisture content of the sub floor complies with the relevant Standards. For RSA conditions we recommend 3% in all cases.
- Stack the timber boxes in the area to be installed and let it acclimatise. For solid timber floors, it is imperative to have the material acclimatise in the area to be installed for at least 2 to 4 weeks or as long as it is necessary to reach the appropriate EMC (Equilibrium Moisture Content). We advise removing timber from boxes and pin stacking timber.
- Subfloor Preparation: All subfloors must be level, structurally sound and clean from any grime, sand or anything that will affect the quality of the installation. Please consult appropriate available Standards or enquire with appropriate Authorities (e.g. NWFA and others)
- Subfloor must remain dry all year-round. Moisture content of wood sub floors must not exceed 11%, and must be level, dry and well secured. When using a wood subfloor – nail or screw every 15cm along joists to avoid squeaking.
- Concrete subfloors must be fully cured and at least 50 days old. They should be level, with minimal height variance. A moisture content test is imperative – various methods of testing include the Anhydrous Calcium Chloride test method, a non-invasive moisture meter, or pin/probe moisture meter.
- Uneven subfloors will rapidly reduce the longevity and quality of the flooring.
SUBFLOORS WITH UNDER FLOOR HEATING
- The moisture content of concrete sub floors should be less than 1% when underfloor heating is to be used.
- Ensure that the instructions of heating procedures are followed before laying the floor boards. The temperature on the surface of the subfloor can be maximum 26o C. If the sub floor heating system is newly installed, the system has to be switched on at least 3 weeks before laying the floor.Switch off the heating system 48 hours prior to installation. Turn the heating system on again 1 week after the floor installation is completed, with a gradual increase of temperature in accordance with the heating system regulations (approx. 1 – 2o C per 24 hour time period).
- Solid timber floors can never be installed over subfloor heating without the risk of serious deformation of the boards. We recommend choosing either engineered timber floors or accepting the potential risk of deformation of boards (gapping, peaking, twisting, etc.).
- UNDERLAY – we highly recommend a well-known and reputable foam underlay, complete with a waterproof plastic backing layer
- Permanent air conditioning and heating systems should be in place and operational prior to installation.
- Excessive exposure or submergence to water will greatly compromise the flooring and nullify the warranty.
- Please note that a “non-correct” installation will affect the warranty. Excessive fluctuations in temperature and humidity can cause expansion and contraction of the flooring planks. It is important therefore to control the environment to the best of your ability and try to protect your flooring from direct sunlight or extreme cold temperatures. Natural floors contain organic pigments and if exposed to excessive direct sunlight, it may cause fading.