Installing Hardwood Flooring Over Concrete and Wood Sub Floors

Development & Contraction of Wood Flooring

“The flooring shop said to leave 10mm for solid wood floor expansion at the surfaces… now the boards are lifting off the floor. ” Ill informed advice such as this often brings about floor problems. Many flooring sales people not really acquainted with solid real wood flooring assume expansion is the same as layered flooring. In fact that 10mm is too few for stable wood flooring. seamless epoxy flooring

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

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

When we say spaces, they can be identified as installing the wood flooring up to and away from the predetermined objects. Such as; “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. inch

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

Immediate Glue Installations

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

If you are laying over a solid 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 soars 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 out, smooth, level and free of structural defects. In the event the concrete sub floor is uneven we recommend using sika latex self progressing 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 substance to bond to the sub floor). These may be removed chemically or mechanically as your local hardware store and they will sell the accurate floor cleaner, but do not use solvent-based stripdance under any circumstances. The use of residual solvents can create complications with the bonding of flooring glues. It is important to ensure a proper connection between the adhesives and concrete and wood energy.

If you have a wooden subfloor you will need to lay a plywood base within the existing floor boards (we recommend using 4mm -6mm outside grade plywood and twist down every 15cm along the edges and at 20cm intervals throughout the rest of the plank using the 1 in . deck screws) before set up, this will then give you a smooth and level surface that you can mount you hardwood flooring on.

You will need to leave a 15mm enlargement gap surrounding the perimeter of the room for large areas over 6 metres in length we recommend 18mm expansion gap. To keep up this gap during set up spacers are provided in the kits. After you have installed the hard wood floor you can cover this expansion gap with scotia or new skirting boards The 15mm development gap also needs to be left in entrance doors the place that the hardwood floor uses through from one room to another we sell on this excellent website a complete range of door profiles open to match your floor.

Pinned Down Installations

Nailed down installation is the traditional way to install wood floors and is done either directly onto wood subfloor or on the tangible subfloor with the use of battens. When mending battens onto concrete you will desire a power-actuated nailer to drive through the battens and fix immediately into the concrete, first of all lay out polyethylene dampness sheet then plywood over the battens to create a new sub floor. We recommend 12mm outdoor grade plywood and 2inch x 4inch battens. Lay down battens around perimeter at 1/2 inch from the wall, leave 1/4 inches gap at each end. Position the first batten so its centre is 16 inches from the outside edge of the perimeter batten. Lay away the rest of the battens across the area 16 inch periods. Always check you battens are level by using a level gauge you may need to use cedar shims to level out scoops in the concrete, go the shims under the battens until level. (If in doubt we recommend consulting a professional trimmer for this method).

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