Installing Hardwood Flooring Over Concrete and Wood Sub Floors

Enlargement & Contraction of Wood Flooring

“The flooring shop said to leave 10mm for solid wood floor expansion at the wall space… now the boards are lifting off the floor. ” Ill informed advice similar to this often causes floor problems. Many flooring sales people not familiar with solid real wood flooring assume expansion is the same as layered flooring. Actually that 10mm is too little for sturdy wood flooring. Athena Contracts

Precisely what is An Expansion Location? Why do some of us Need It?

Development areas are spaces remaining around the perimeter of rooms, against fixed items such as columns, thresholds, hearths, skirting boards, and other stationary items built or secured in to the framework structure of the home. Despite the fact that Hardwood flooring used has ceased to be living and breathing it still reacts to wetness modifications in our environment. The cells in the solid wood will take on or absorb wetness when the relative moisture is high, or when confronted with water. Expansion will take place, and the hard wood grows, for lack of a clearer term, across the grain (width) of the plank (see below, not all will respond this way). Conversely when air moisture levels cut down, moisture content evaporates, downsizing of the solid real wood will occur. 

When we say spaces, they are really identified as installing the hard wood flooring up to and away from the set objects. One example is; “we recommend at least 15mm small to medium area-18mm growth on larger areas at the skirting board or wall if new skirting to be fitted. very well

Hardwood flooring can behave to the occurrence of moisture. In the dry out winter heating months, dampness can leave the solid wood flooring triggering the floor to contract slightly in size, which can leave slight gaps between each floor board. Throughout summer a few months when the humidity is higher, the hardwood floor will expand and the gaps will disappear. When there is too much moisture in the subfloor it will cause the wood cedar planks to cup, or belt buckle. Virtually all problems related to hardwood flooring are credited to improper installation and sub-floor preparation. This is why it is important setting up hardwood floor that you follow the correct recommended installation methods by the manufacturer.

Immediate Glue Installations

A immediate glue installation requires the use of a floors adhesive applied directly on to the subfloor (never straight apply to the boards). This approach can be used on concrete and solid wood subfloors. When done appropriately this is the most stable method for fitted wood flooring as the elastic flooring adhesive allows the ground to broaden and contract with no problems.

If you are laying over a tangible subfloor you will first need checked the cement moisture, if the floor has a moisture content of over 4% then either wait until the sub floor dries to meet this level or how to use appropriate moisture barrier, we recommend Sika Mb Primer to ensure no damp goes up up into your new floor.

Also note that new concrete slabs require a the least 62 days drying time before covering them with a wood floor.

All Solid sub-floors must be dried, smooth, level and free of structural defects. In the event the concrete sub floor is uneven we recommend using sika latex self ranking up compound to level the subfloor. The concrete must also be free of contaminants i. e. coloring, oil, wax grease, mud and curing compounds (the reason for this is the fact you need the self leveling mixture to bond to the sub floor). These may be removed chemically or mechanically as your local hardware store and they will sell the appropriate floor cleaner, but do not use solvent-based stripshow under any circumstances. The use of residual solvents can create complications with the bonding of flooring glues. It is important to ensure a proper attachment between the adhesives and concrete and wood energy.

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