Decking replacement.

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Decking replacement.
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Nick

Joined: 02 Nov 2004
Posts: 34535
Location: Hereford

Posted: Wed May 27, 20 4:39 pm Post subject: Decking replacement.

I've an area of composite decking 9x5, that needs to be replaced with wood.

Essentially the subframe has shifted and settled over the last 8 years since it was put down, and boards have cracked. Replacing individual boards is not an option.

Do I pull it all up, and relay on the existing (adjusted) joists with wood, OR could I lay wood over the composite, using 2 inch joists, and adjusting their height to cope with the unevenness? The additional height is no problem. The advantage will be speed. Is there a downside to over laying? The subframe is NOW settled.

dpack

Joined: 02 Jul 2005
Posts: 46188
Location: yes

Posted: Wed May 27, 20 4:58 pm Post subject:
the sub frame/composite might rot before the new skin but at that point re use the skin if it is stable using it as a base to put a flat skin over should be ok do ensure the movement has ceased or take it all out and do it with footings that work in your earth a nail gun and plenty of plastic shims are rather handy for that sort of job.

dpack

Joined: 02 Jul 2005
Posts: 46188
Location: yes

Posted: Wed May 27, 20 5:06 pm Post subject:
ooooh nail gun be careful

Nick

Joined: 02 Nov 2004
Posts: 34535
Location: Hereford

Posted: Wed May 27, 20 5:10 pm Post subject:
Heheheheheh. I'd screw it. I have a nail gun, and it's loads of fun, but screws are better, I feel.

Nick

Joined: 02 Nov 2004
Posts: 34535
Location: Hereford

Posted: Wed May 27, 20 5:12 pm Post subject:
Shims. WHat a great call. Thanks.

dpack

Joined: 02 Jul 2005
Posts: 46188
Location: yes

Posted: Wed May 27, 20 5:23 pm Post subject:
if you use the rough shank ones they are pretty secure use screws to pull it into place and spikes to connect it permanently can work fairly well.

Jonnyboy

Joined: 29 Oct 2004
Posts: 23956
Location: under some rain.

Posted: Wed May 27, 20 7:15 pm Post subject:
if you lay over the composite boards don't you run the risk of them still cracking underneath and you losing more structural integrity, captain* *TMStar Trek

Nick

Joined: 02 Nov 2004
Posts: 34535
Location: Hereford

Posted: Wed May 27, 20 9:01 pm Post subject:
I donâ€™t think so. Iâ€™ll probably run the boards at 90 degrees to the others with plenty of new support. And these will be level, thus lacking the stress. The composite board were one of the first generation and have become brittle. Hoping redwood board will retain a bit of flex.

Mistress Rose

Joined: 21 Jul 2011
Posts: 15947

Posted: Thu May 28, 20 6:34 am Post subject:
It will certainly be faster, but it sounds and may look, a bit of a bodge job, especially if you are laying them at right angles to the existing boards. You will need to make sure that each of the supports is level and in good condition too.

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28231
Location: escaped from Swindon

Posted: Thu May 28, 20 7:07 am Post subject:
I diced decking board to act as shims when correcting levels on the sub frame the cowboys put in. But that was a lost cause really.

Nick

Joined: 02 Nov 2004
Posts: 34535
Location: Hereford

Posted: Thu May 28, 20 11:05 am Post subject:

Mistress Rose wrote:

It will certainly be faster, but it sounds and may look, a bit of a bodge job, especially if you are laying them at right angles to the existing boards.

Why? You'd not see the bottom layer.

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28231
Location: escaped from Swindon

Posted: Thu May 28, 20 2:09 pm Post subject:

Nick wrote:

Mistress Rose wrote:

It will certainly be faster, but it sounds and may look, a bit of a bodge job, especially if you are laying them at right angles to the existing boards.

Why? You'd not see the bottom layer.

I have to admit that this in an approach I have contemplated for our deck that's falling into the marsh. If the structure is stable then just build on top of it.
Was about to make joke about it being as stable as Cummings position, but even now that's probably untrue.

Nick

Joined: 02 Nov 2004
Posts: 34535
Location: Hereford

Posted: Thu May 28, 20 3:00 pm Post subject:

jema wrote:

Nick wrote:

Mistress Rose wrote:

It will certainly be faster, but it sounds and may look, a bit of a bodge job, especially if you are laying them at right angles to the existing boards.

Why? You'd not see the bottom layer.

I think if it lasts another week, it'll last until the job is done. Post no-deal Brexit? He's of no use.

Jewson have just quoted me a grand for everything I need, and week is forcing me into a holiday, so...

dpack

Joined: 02 Jul 2005
Posts: 46188
Location: yes

Posted: Thu May 28, 20 4:16 pm Post subject:

Nick wrote:

jema wrote:

Nick wrote:

Mistress Rose wrote:

It will certainly be faster, but it sounds and may look, a bit of a bodge job, especially if you are laying them at right angles to the existing boards.

Why? You'd not see the bottom layer.

if you ordered one bag of shims, get two, and get some pins for the nail gun to keep them in place during construction

escaped shims are a pita

Nick

Joined: 02 Nov 2004
Posts: 34535
Location: Hereford

Posted: Thu May 28, 20 7:21 pm Post subject:
They come in big bags. And the plan was at least two. Iâ€™ve 80m2 to do ish.

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