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How to fix a split decking board?
New decking boards have been laid and we’ve noticed that there is a split in one of the boards near the entry door. The split is about 2m long and is approximately 2cm at its widest to almost nothing at the end (a long triangular shape). Any suggestions on best way to repair? Thanks
Total length
Widest section
Mid section
Next to narrowest section
Narrowest section
Solved! See most helpful response
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Re: how to fix split decking board
That's a bit unfortunate @Burnside7.
There's no way I can think of that would fix this issue. I think it would either be a case of leaving it be and seeing if it causes issues ( I do see there is already a chipped section) or pulling up the board and replacing it. If it's really bothering you, I'd suggest pulling up the board and replacing it. Do you have any of the deck stain left so you can ensure the replacement board matches?
Can I just confirm that it's actually a crack? In some areas, it looks to be, but in others, it clearly looks like some heavy object has been dragged across the surface as below. If it is a drag mark, it appears as if when the object was dropped off the side of the board, it caused the chip. I guess that's irrelevant, though, as if it's bothering you it needs to be replaced.
Please let me know if you have any questions.
Mitchell
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Re: how to fix split decking board
Thanks Mitchell
It’s definitely a crack as it moves when touched/walked on. I can live with the chip.
Regards.
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Re: how to fix split decking board
Hi @Burnside7
To my eye there are other mirco cracks on other adjacent boards.
Timber drying out to far?
Once the cracks open the timber will perish faster.
So try sealing the timber and boards and see if you can increase their life span,
Try this oil based product might rejuvinate timber a little may help seal cracks big and small.
Sikkens 4L Natural Cetol Deck Timber Finish
I/N: 0412284
$174
- Quick drying
- Ideal for decks and all exterior timber
- Long lasting weather and UV protection
- Beautiful transparent low satin finish
- Lower environmental impact and odour. Compared to a typical solvent-based equivalent
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Re: how to fix split decking board
Thanks for your comments. I noticed these cracks and some splits near the ends of the boards. I can say I'm not happy with the tradie who installed them, only a month or so ago. There are several coats of decking oil on the boards, but I'm happy to keep on oiling to build up weather resistance.
Thanks again.
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Re: how to fix split decking board
Hi @Burnside7
Sorry your tradie has supplied some splittering wood slats .
The product I recommened is oil like with the added benefits of superior protection and can be future reapplied with out sanding as a bonus.
Iwas thinking about those bigger cracks how do you feel about getting some pva clear wood glue into them and use little timber wedges against slat closest crack to close and glue them before sealing. Pva is also water proof wipe excess with rag.
For wedges sacrific a few clothing pegs they might be wedge shape.
I truly hope this helps
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Re: how to fix split decking board
Thanks again @Jewelleryrescue
I did decide a few days ago to try gluing, even if it ended up being temporary. So far so good. Currently wedged in with plastic plugs until I can get good sized wooden wedges. I was a bit perplexed at first about the clothing pegs until I realized you would be referring to wooden pegs. (I only have steel pegs but I get the idea.)

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