How to replace a damaged timber floorboard
Got a board that needs replacing? Here’s a step-by-step walkthrough of the correct technique for removing and replacing a damaged timber floorboard over joists or battens, without wrecking what’s around it.
ATFA How-To Series: Timber Flooring
Replacing a damaged timber floorboard.
Watch the full technique, then scroll down for a step-by-step breakdown.
What's covered in this video
Here’s the process at a glance, useful to share with apprentices or reference on the job.
Step 1: Locate the nails Use a magnet to find where the nails are fixing the floorboard into the battens or joists. The magnet locates the nail through the board and stops, so you can mark just to the side of each nail. That way you can cut without hitting the nails. You’re still on the batten, but the board stays attached at the nail, which makes the damaged section easier to remove while leaving enough room on the battens to support the replacement board.
Step 2: Cut out the damaged board Make sure you’re wearing the correct PPE and have the vacuum on to remove dust before you begin. Cut down into the board using a multi-tool or track saw to cut the damaged board out of the floor, then use a chisel to get out any remainder of the leftover board. Be careful not to damage the other boards.
Step 3: Measure and prep your replacement board Measure the new replacement board and cut it to length. You’ll need to cut the bottom of the groove off the replacement board to enable it to fit into the existing floor’s tongue and groove.
Step 4: Add support under the tongue side Glue some pieces of timber under the tongue side of the board on the floor to give additional support under the floor, then use some screws to hold them in place.
Step 5: Glue and drop in the new board Add adhesive to the joists using a sausage gun. Drop the new board in place over the adhesive and softly knock it in with a mallet. A block of wood can also be used when tapping down to protect the surface of the board.
Step 6: Weight it down and let the glue cure As the floor is secret fixed, there are no face fixings. This repair relies upon a good adhesive bond between the subfloor and the floorboard, and a good amount of weight or pressure being applied until the glue cures.
Backed by Australia's timber flooring industry
ATFA (the Australasian Timber Flooring Association) is the peak industry body for timber flooring professionals across Australia and New Zealand. Our how-to video series is built for tradies, practical and no-fluff guidance developed with input from experienced flooring installers and industry suppliers.
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