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How to seal timber floors

A lambswool applicator being used to apply sealer to a hardwood floor

Overview

Sealing a timber floor helps preserve and highlight the beauty of the timber. It also makes it a lot easier to clean. We'll show you how to seal the floor with a lambswool applicator. You'll also see how using a paint brush makes it easier to seal around the edges. 

Steps

1Seal the edges and corners of the timber floor

Start by stirring your sealant thoroughly.

Then carefully paint in the corners and edges of the floor with a paint brush. This is called 'cutting in'. A good idea is to cut in about 100mm from the edge. This allows you to do the rest of the floor quickly without getting sealant on the walls or skirting boards.


A person using a paintbrush to apply sealer around the edge of a hardwood floor

2Seal the rest of the timber floor

Now use the lambswool applicator to apply sealant to the rest of the floor. Start in a far corner and work your way towards a doorway. Once you're done, let it dry before doing a second coat. Drying times are normally on the side of your tin. Sometimes, a light hand sand between coats can help to keep the timber feeling smooth.
A lambswool applicator being used to apply sealer to a hardwood floor
Health & Safety

Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page.

When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.