flooring acclimitised

moisture meter

clean concrete base

installed with ultrabond

applicator

adhesive

total bond

mapei

trowel

bonding

measuring

square

hand saw

mallet

underlay

foil

sealing

pva

glue tongue

wood glue

floated floor

wipe glue

skirting

osmo poly x

floor brush

osmo application

gaps

mat

filler

oak flooring

installation

Oak flooring Installation

It is important to read these guidelines before purchasing your oak flooring and laying products.

SITE CONDITIONS

Before any flooring can be delivered to site all building works such as concrete and plastering should be completely dry.

Windows and doors should be fitted and the relative atmospheric humidity should be stable.

SUBFLOOR CONDITION

The subfloor (also referred to as the substrate) should be dry and free from rot or fungal decay.

If the substrate is concrete it should be level, free of dust or crumbling parts or any other surface irregularities such as oil or varnish.

We are a stockist of Mapei flooring products and carry a comprehensive range of substrate repair products and adhesives.

Excessively rough or uneven concrete floors may be smoothed over with high strength smoothing and levelling compound such as Ultraplan and Ultraplan Eco.

ACCLIMITISATION

Oak flooring is a natural product and requires a period of acclimatisation in the room that it is to be layed. The flooring should be stacked a minimum of 100mm from outside walls in the room that it is to be layed, with the packaging opened for two weeks before laying.

Under no circumstances should it be stored outside or in a garage etc.

It is important that the prevailing humidity and temperature match as closely as possible the long term room conditions.

HEATING SYSTEMS

Wet and warm air heating systems should be running a minimum of two weeks before oak flooring can be layed. The room temperature and atmospheric relative humidity (R.H) must be stable before laying of your oak floor can take place.

MOISTURE TESTING

Whilst subfloors may appear dry on the surface or to the touch, this can be misleading especially with a newly laid floor screed or base. There may still drying occurring as part of the curing process which means a higher than acceptable R.H level.

We recommend the use of Protimeter MMS moisture meters and Hygrometers for checking moisture contents in cementious substrates.

LAYING DIRECTLY ONTO A CONCRETE BASE

The substrate must be well cured, dry, flat, strong, clean and free of dust, crumbly parts and traces of oil, varnish etc. Relevant moisture checks must have been made prior to installation.

Method: Mastic Gun Adhesive

he Adhesive we offer is called Mapei Ultrabond S997 1k. This come in 600cc foil tubes that are to be used in a Mastic Gun. Regarding the quantity required, you need approximately 1 tube per 2m² of floor area. Always allow a few extra tubes for waste. The adhesive is laid in strips directly onto the concrete 100mm apart, with the floor boards running in the opposite direction. Press each board down slightly to ensure they make good contact with the adhesive. Remember to allow your 15mm expansion gap around the outside of the room. The floor may be set to light foot traffic after approximately 12 hours. Do not lay in temperatures -10 Deg C.

Method: Total Bond Adhesive with a trowel

Mapei Ultrabond P990 is a ready to use total bond adhesive. It is applied directly to the concrete base using the specially designed parquet notched trowel. When laying the flooring press down firmly to make sure the back is well buttered. The special properties of the Ultrabond P990 makes adjustment of the parquet particularly easy after laying. Remember to allow your 15mm expansion gap around the outside of the room. The floor may be set to light foot traffic after approximately 12 hours. Do not lay in temperatures -10 Deg C.

Method: Floating Engineered Oak Flooring with a vapour barrier underlay

Our engineered Oak Flooring can be laid as a floating floor if under flooring heating is not present. It can go directly onto the concrete but it must be laid onto our 3mm thick vapourbarrier underlay, with vapour tape along the joins. Use PVA glue run along the top edge of the tongue to glue together the boards. It is useful to remove any excess glue from the bevelled edge as you go. Remember to allow your 15mm expansion gap around the outside of the room. The floor may be set to light foot traffic after approximately 12 hours.

LAYING ONTO AN EXISTING WOODEN SUBFLOOR

If you have an existing wooden subfloor you will need to lay 5.5mm WBP plywood base over this before installation. This gives you a smooth and level surface for you to install your wooden floor onto. To avoid creaking, check over the subfloor and securely fasten any loose boards. For added soundproofing a foam underlay can used. The plywood is to be screwed and glued down. Once you have this new plywood base the fixing methods for the oak flooring are either adhesive, nailing or floating.

LAYING ONTO BATTENS / JOISTS

If you are fitting new battens onto a concrete floor it is advised to lay a Foil backed barrier membrane underneath the battens, this acts as a vapour barrier to prevent possible moisture entering the boards, Browns flooring are stockists of Timbertech underlay. The recommended distance between battens is 400mm.

Method: Secret Nailing

Depending on the depth of your battens we would recommend using either 40mm or 50mm lost head nails to fix you floor.

The boards are nailed through the tongue at an angle and punched home with a nail punch. The recommended distance between battens is 300mm. The maximum face width of flooring you should secret nail is 160mm. Porta Nailers can also be used to drive the nail in to the floor at a 30 degree handle through the tongue into the subfloor.

Method: Surface nailing

Again 40mm or 50mm lost head nails can be used and again punched under the surface with a nail punch. Nail holes can be filled or left open, depending on the look you are wishing to achieve. We recommend 2 nails per board on each batten. The recommended distance between battens is 400mm. Alternatively traditional cut nails can be used which sit above the surface.

Like with the glue down methods you will need to leave a 15mm expansion gap around the perimeter of the room. These gaps can be covered with skirting or cover strips.

LAYING ONTO UNDER FLOOR HEATING

Firstly, if you are laying over an underfloor heating system you can only use real wood solid engineered flooring, as this product is the only one stable enough to withstand the temperature fluctuations associated with underfloor heating. Our flooring has been used in conjunction with underfloor heating on many projects and with leading underfloor heating companies. We would recommend that only professional fitters are used to carry out these installations.

Method: Total Bond Adhesive

Mapei Ultrabond Eco S955 is a ready to use total bond adhesive specially designed to fix wooden flooring to underfloor heating.

The level of humidity in the screed must be measured using a hygrometer. The relative humidity (RH) must be less than 70%. To solve problems of residual humidity levels higher than those prescribed for laying, wait until the screed is dry, or apply a suitable waterproofing primer, contact Browns flooring for the appropriate product.

Wet and warm air heating systems should be running a minimum of two weeks before oak flooring can be layed. The room temperature and atmospheric relative humidity (R.H) must be stable before laying of your oak floor can take place.

Ultrabond Eco S955 is applied directly to the screed using the specially designed parquet notched trowel. When laying the flooring press down firmly to make sure the back is well buttered. The special properties of the adhesive makes adjustment of the parquet particularly easy after laying. Remember to allow your 15mm expansion gap around the outside of the room. The floor may be set to light foot traffic after approximately 12 hours.

The heating system must not be running during installation.

The underfloor heating system should be introduced very gradually as any sharp rise in temperature may distort the flooring.

Method: Nailing & Gluing to Battens over Underfloor heating

If you are fixing to battens either set in a screed or joists to a first floor application we recommend the use of our adhesive Mapei Ultrabond S997 1k together with secret or surface nailing.

The heating system must not be running during installation.

The underfloor heating system should be introduced very gradually as any sharp rise in temperature may distort the flooring.

TREATMENT AND CARE FOR YOUR WOOD

All of Browns Oak flooring comes pre-sanded. If once the floor has been laid there are any marks or dirt they can be removed with a light sanding, either by hand or using an orbital/belt sander.

wo coats of Osmo Polyx Oil will be required as a top coat to your floor, applied evenly with a brush and left to dry fully before applying the next coat. For a superior finish lightly sand the floor between coats.

Most residential floors very rarely require re-sanding and finishing. If the finish begins to wear after a few years then you can either lightly sand the floor or completely remove the old treatment and re apply as before.

INSTALLATION SERVICE

Browns have been working together with APJ Carpentry Services for many years laying oak flooring locally and nationwide. Father and son team Adam and Clive are highly skilled tradesmen specialising in all aspects of floor fitting along with other areas of carpentry such as fitting door linings, skirtings, architraves, staircases and hanging doors. Many of these items are usually required alongside floor fitting. This service enables us to carry out the complete installation package for you.

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