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Decking board

 
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sgt.colon



Joined: 27 Jul 2009
Posts: 5776
Location: Just south of north.
PostPosted: Fri Jun 29, 12 10:57 am    Post subject: Decking board  Reply with quote    

I'm going to have a go at building some planters that are made out of decking. Please could someone tell me if the wood will need treating with anything?

Thanks.

Went



Joined: 19 Mar 2006
Posts: 6968

PostPosted: Fri Jun 29, 12 11:00 am    Post subject: Reply with quote    

Untreated wood will rot fairly quickly if in constant contact with damp/wet soil - treat with a preservative and line with punctured plastic (to allow drainage) - although sometimes plastic can trap water. A couple of coats of a preservative will do well and can be re-treated every couple of years.

sgt.colon



Joined: 27 Jul 2009
Posts: 5776
Location: Just south of north.
PostPosted: Fri Jun 29, 12 11:22 am    Post subject: Reply with quote    

Thanks Gawber.

T.G



Joined: 13 Sep 2009
Posts: 7280
Location: Somewhere you're not
PostPosted: Fri Jun 29, 12 11:48 am    Post subject: Reply with quote    

As a side note: If you can get hold of some polystyrene from old packaging and put it in the bottom of the planter it will help prevent the roots of any plant sitting in water especially over winter (if, of course, you are not planning on taking them indoors) and it keeps the roots warm helping to prevent frost/ice bothering them as much.

Also yacht varnish works well on the inside of wooden planters.

Hairyloon



Joined: 20 Nov 2008
Posts: 14581
Location: Today I are mostly being in Yorkshire.
PostPosted: Fri Jun 29, 12 11:57 am    Post subject: Reply with quote    

Decking board usually comes treated. You will need to treat any ends that you cut.
I would also suggest that you line it with polythene. Nothing rots wood faster than soil contact, and there have been concerns raised that the wood preservative can leach into the soil.
My opinion of the latter is that the rate of leaching is utterly insignificant, but I thought I would mention it.

sgt.colon



Joined: 27 Jul 2009
Posts: 5776
Location: Just south of north.
PostPosted: Fri Jun 29, 12 12:24 pm    Post subject: Reply with quote    

Thanks TG and Hairy.

I'll see if I can find some polystyrene. Typical innit, I took some to the tip last week.

Mistress Rose



Joined: 21 Jul 2011
Posts: 8482

PostPosted: Sun Jul 01, 12 8:45 am    Post subject: Reply with quote    

Do you need to use decking to get the 'look' or because you have some over from another job? If not, you might like to look on Woodlots, or Coppice(?) for some locally grown and milled western red cedar. It won't last for ever in contact with soil, but should be good for a few years and has a natural preservative in it. Because of the bark it is a bit of a pain in the big mills, but a lot of mobile sawmill operators go for small lots which have been grown as a nurse species for hardwood plantation.

For anyone interested, it makes good outdoor cladding for buildings too.

love154



Joined: 20 Sep 2016
Posts: 10
Location: Dartford
PostPosted: Sat Apr 01, 17 11:37 pm    Post subject: Reply with quote    

use
Railway
Sleepers
for flower beds much better

gz



Joined: 23 Jan 2009
Posts: 5802
Location: Ayrshire, Scotland
PostPosted: Sun Apr 02, 17 3:56 am    Post subject: Reply with quote    

I'd be wary of the preservative on railway sleepers

Mistress Rose



Joined: 21 Jul 2011
Posts: 8482

PostPosted: Sun Apr 02, 17 7:46 am    Post subject: Reply with quote    

If you can use untreated oak, chestnut, or western red cedar boards, all heartwood, they will last for a reasonably number of years without any treatment. They do rot eventually, but rotted boards can be replaced.

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