How to cut floorboards sitting on a joist joist?

H-M

Hi Team 

I have removed and internal wall in my 1967 home only to find the Ash floor boards don't flow all the way through. I am looking to cut them back on the joist and add in a reclaimed ash board to tie it all together (I've included a photo of it). The boards are 18mm thick. 

I am seeking advice in relation to cutting the boards back. Is a circular saw the best tool for me to use? 

I look forward to you advice.

MitchellMc

Welcome to the Bunnings Workshop community @H-M. It's wonderful to have you join us, and many thanks for your question about cutting floorboards.

A circular saw would be the most effective tool for a tradesperson. Whether it is for you really comes down to your ability. You only get one shot with a circular saw, and if you cannot follow the line, you might cause significantly more work. The other option would be to use a multi-tool, which would take far longer but would be more forgiving.

You need to examine how the boards are nailed to the joist. If nails run in the line of your cut, you'll need to remove them first. Remember your PPE, including safety goggles and a dust mask.

Please let me know if you have any questions.

Mitchell