Coating: Interior timber floors

Floorboards get treated harshly with everyday wear and tear so it’s important to prepare, coat and maintain the surface properly, protecting the look and life of the timber long term. This guide will step through each part of the process to ensure you get the best possible result.


Preparing the surface

Depending on the condition of the timber floor, preparation steps will differ.

Steps for preparing new bare timber

  1. Sand timber to an even, smooth surface.
  2. Clean oily timbers such as Brushbox, Spotted Gum, Cypress and Tallowwood with methylated spirits and allow to dry. Prepare cork in accordance with cork manufacturer’s specifications.

Steps for preparing previously finished surfaces

  1. Remove any polishes with an appropriate floor stripper.
  2. Wash the surface using Cabot’s® Floor Clean and allow to dry.
  3. Sand to a uniform dull finish. Vacuum and remove dust.
  4. Conduct a test patch. Check for adhesion by applying UltraFloor to a small test area. Allow to dry for 24 hours then firmly press a strip of sticky tape over the coating and rip off quickly.
  • If the coating is removed, sand the entire surface back to bare timber.
  • If the coating stays intact, the coatings are compatible and it’s safe to coat, sand the test area back to the dull finish.

Note: If sections of the previous coating have worn back to expose bare timber, the entire floor must be sanded back to bare. Nail holes and surface defects should be filled with Intergrain® Woodblend™ Wood Filler after the first coat of Intergrain UltraFloor. Do not use Linseed Oil putty.

Application of Intergrain® UltraFloor®

Intergrain UltraFloor is a commercial strength, clear, water-based finish for timber flooring with superior wear resistance that preserves timber’s natural colour.

Ensure the surface is dry and free from dust, dirt, wax, polish and oil before coating.

  1. Stir thoroughly before and during use with a flat blade stirrer. Do not thin.
  2. Cut in around edges with a narrow brush or applicator.
  3. Apply an even, generous coat with a lambswool applicator, short nap roller or quality long bristle brush. Work along the complete length of three to four boards at a time, keeping a wet edge to prevent lapping or join marks. Lay off lightly in the direction of the grain.
  4. Do not overwork the coating as this will result in a patchy, uneven finish.
  5. Allow a minimum of four hours to dry.
  6. Sand lightly with a fine grit paper to remove any raised grain. Vacuum to remove sanding dust.
  7. Apply two more coats by repeating steps 3-7 above.

Note: For stairs and ramps, use Intergrain UltraFloor SlipResistant see slip rating advice here. UltraFloor SlipResistant provides a satin finish



Regularly clean floors with Cabot’s Floor Clean.

Maintenance coats should be completed before UltraFloor has worn away to expose bare timber.


  1. Clean to remove any waxes or polishes.
  2. When dry, sand to a uniform dull surface and remove dust.
  3. Apply one to two coats following application instructions.


If sections of coating have been worn back to bare timber, the coating must be fully removed by sanding and the surface prepared as per previous instructions.