french oak timber flooring

CSO Pty Ltd t/a Salvage Europe © 2018 SYDNEY, AUSTRALIA

HEADOFFICE - 30 Denison Street Bondi Junction NSW 2022

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INSTALLATION

Installing your Salvage Europe French Oak Flooring

There are several methods you could use to install a solid French Oak Floor. 

  • Top Nail down method

  • Glue down method

  • Secret Nail down method

1. TOP NAIL DOWN METHOD

The boards can be glued down onto existing floorboards, plywood or flooring grade chipboard or onto floor joists or batons. Suitable products:

Suitable products: All Solid floors up to & including 220mm wide

Fitting instructions:

Once the room has been measured and an allowance made to cover wastage, the moisture content of the sub-floor and walls checked and the sub-floors confirmed as clean, dry and flat:

  • We recommend that you should lay Sisalkraft, heavy duty bitumen backed builders’ paper under all nail down installations as a precaution against cupping due to damp ingress.

  • Plank floors usually work best when laid down the longest wall length.

  • Make sure that you inspect each board before you install it.

  • The groove of the floor is laid against the wall.

  • A gap must be left between the boards and the perimeter wall/skirting. This gap is called an expansion gap and must be a minimum of 10mm. Plastic spacers are available to create this gap on your starter row.

  • Now lay your first row against the wall.

  • Use a Primatech nailer with 38mm L nails for floorboards/board products and 50mm for joists. The Primatech nailer needs to be properly set up to fire the nail into the correct position and depth into the tongue.

  • It is also important that the floorboard is not too tightly fixed to the subfloor this is part of the Primatech nailer set up.

  • Nail every 250mm along the board for floorboards/board products or into every joist/baton.

  • Use the off cut from the last board to start the next row, making sure that the ends of the next row of boards are staggered at least 400mm from the previous row. A Parquet Clamp is useful for fitting these first few rows.

  • Any damaged boards can be cut in half and also used to start new rows.

  • Continue across the floor until you reach the last row.

  • Cut the last row of boards to leave a 10mm gap and then use a Parquet Clamp to edge the final row of boards into place.

  • You can install skirting as required.

 

2-GLUE DOWN METHOD

The boards can be glue down onto plywood or flooring grade chipboard –

Suitable products:

  • All 20mm Solid floors up to & including 220mm wide

  • Wood Blocks and Handmade panels

For installation over concrete please additionally follow the preparation instructions as detailed below:

  • For all installations a minimum of one coat of Prymerdfast500 should be used.

  • For sub-floors with a Moisture Content (MC) greater than 2%( and less than 5%) you will need to use two coats of Prymerfast 500.

  • For sub-floors with an Moisture Content (MC) greater than 5% please call for our specific recommendations.

  • If over concrete, flooring grade chipboard needs to be installed.

Fitting instructions

Once the room has been measured, an allowance made to cover wastage, the moisture content of the sub-floor and walls checked and the sub-floors confirmed as clean, dry and flat:

  • Plank floors usually work best when laid down the longest wall length.

  • For wood blocks/panels you will need to work out where the central axis of the room runs. Laying strings from corner to corner will assist this.

  • We advise that you glue several rows of planks at a time.

  • Pre-cut these rows, making sure that the board lengths are staggered to ensure that the ends of different boards do not match up.

  • Use the off cut from the last board to start the next row, making sure that the ends of the next row of boards are staggered at least 400mm from the previous row. A Parquet Clamp is useful for fitting these first few rows.

  • Any damaged boards can be cut in half and also used to start new rows.

  • A gap must be left between the boards and the perimeter wall/skirting. This gap is called an expansion gap and must be a minimum of 10mm. Plastic spacers are available to create this gap on your starter row. Make sure that this gap remains even at door ways.

  • Once the first few rows of boards are ready it is time to spread the Unisil adhesive. The Unisil adhesive needs to be spread using a fine notched trowel-3mm.

  • Work across the floor using this method of pre-cutting, gluing and then installing.

  • Once the floor is complete clean off any adhesive residues before fully hardened.

  • You can install skirting, scotia and L/T sections or Reducers as required.

 

3. SECRET NAIL DOWN METHOD

Secret nailing is a popular way of showcasing the beauty of timber flooring by creating a floor with no visible nailheads or fixtures. There are no nailhead cavities filled with wood putty, and finishing procedures such as sanding and coating will not be affected.

The secret nailing process typically involves fixing the planks at the edge with the nails driven at a 45-degree angle. The planks are also glued to the joists or substrate for added strength. (AS PER GLUE DOWN METHOD)

Installation of French Oak hardwood flooring involves a combination of trowel adhesive to attach the boards to a ‘solid’ sheet subfloor. Suitable subfloors to which wide boards can be secret nailed include 12 mm+ plywood and 19 mm+ particleboard flooring. Each must have a moisture content within 2 per cent of the acclimatised timber flooring being installed.

Installers need to be skilful with the nail gun. As with visible nailing, they need to be competent with cramping pressure and have to move quickly, so as to avoid cupping caused by excess pressure.

When secret nailing wide boards, you need to fully adhere the back of the boards to the substrate as well as nail. The wide boards can be secret nailed onto 12 mm (or thicker) plywood and 19 mm (or thicker) particleboard flooring.”

Definitely not recommended for DIY installs, apart from fixing each board individually, secret nailing is a fairly straightforward process. However, careful preparation is necessary. The substrate needs to be flat and dry prior to work commencing. It is also important to ensure the sub floor has a moisture content within 2 per cent of the timber flooring that is being installed.

Secret nailing suits any application where top nailing is specified, including commercial projects. Secret nailing is slower than top nailing when dry fitting over joists, as each board has to be fixed through its edge, whereas with top nailing, groups of boards can be cramped together and quickly fixed through the top of the boards. But a skilled installer can save time at the other end of the job because there are no nails to punch and fill.

Any width or thickness boards can be secret nailed, as the nails just hold the boards down until the glues cure. Any width or thickness can be fixed this way with the correct glues if they are used as specified by their various manufacturers it is particularly important for secret nailing: Installation is not a complex task if you follow instructions, but we strongly recommend that you use a skilled professional installer.