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Replacing decking boards with treated pine

Discussion in 'Repairs & Maintenance' started by gach2, 20th Nov, 2015.

  1. gach2

    gach2 Well-Known Member

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    Have decided to replace all the timber decking with treated pine.

    The decks 4.6x3.7 (3.7 is the joist so the timber pieces would be 4.6 wide)

    Would it be recommended to use 1 piece all the way along? Bunnings does sell 4.8m long planks

    Also at bunnings i found the 2.4m planks to be great but the 4.8 had holes in them (is it just a bad batch or is this usual and what should i do?

    Thanks
     
  2. Westminster

    Westminster Tigress at Tiger Developments Business Member

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    What length is currently on there?
    I would expect that 4.6m long boards would have more issues with bowing etc if there wasn't a support beam at 2.3m underneath.
    Why go to treated pine?
     
  3. Scott No Mates

    Scott No Mates Well-Known Member

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    Use the appropriate grade of decking material - it is a natural product so may contain some knots.

    If you can get the right length of timber, use it. You will have a joint right down the middle which will open up if yoy select the 2.4m lengths.
     
  4. Brian84

    Brian84 Well-Known Member

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    I personally would use the 4.8, lengths as it requires less cutting and looks better with no joins. The holes in the timber are called knots and it is normal in treated pine timber.
     
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  5. Brian84

    Brian84 Well-Known Member

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    also if you use the 2.m lengths you have to stagger the joints otherwise they will open up as scott has said.
     
  6. gach2

    gach2 Well-Known Member

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    im definitely more keen on 4.8 and cutting the leftovers off once its done

    So what do you recommend to do with the knots? leave them there?

    Also anyone know where i can get better grade treated pine (ive only been bunnings)

    Reason i chose treated pine was due to the price and softness (i will be drilling and hammering the nails in, no other tools than a drill and a hammer) and its my first time installing ( did replace 2-3 boards on another deck and am confident in doing the whole deck)
     
  7. Westminster

    Westminster Tigress at Tiger Developments Business Member

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    I'd go to a few other Bunnings or a timber yard.
     
  8. Brian84

    Brian84 Well-Known Member

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    you can try abbey timber in Milperra or my mate paul is the sales rep at midcoast timbers 0434644030. they are at northmead I think.

    beware that treated pine expands and contracts a lot more than hardwood. when I lay hardwood decking I usually leave a min gap, sometimes no gap if its out in the weather and it still ends up with big gaps, that's how much they can shrink.

    I would recommend screwing the boards rather than nailing.
     
  9. gach2

    gach2 Well-Known Member

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    Cheers might try a few other bunnings and timber yards

    Brian unfortunately cant to do your mate as its for a IP in brissy

    was planning on leaving a 5mm gap
     
  10. gach2

    gach2 Well-Known Member

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    any reason behind the screwing over nailing

    Im considering it too but only because I was hoping i could use the drill to drive the screws in (less man power) and im pretty new to nailing
     
  11. Brian84

    Brian84 Well-Known Member

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    All good no problem. I usually use a 3mm gap as we use a nail for the spacing
     
  12. Brian84

    Brian84 Well-Known Member

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    Nails tend to come loose pretty easy on a deck that gets a fair bit of use. Even if you use a nail you need to ore drill anyway to prevent the boards from splitting.
     
  13. Brian84

    Brian84 Well-Known Member

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  14. gach2

    gach2 Well-Known Member

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    sweet will look into it

    yea might give screwing a chance too (end up going whichevers easier)
     
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  15. bob shovel

    bob shovel Well-Known Member

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    I'm with @Brian84, screw it! And 4.8m, I used 6m lengths to avoid joins get it delivered a local supplier might be free or around 20 bucks

    Go to other timber yards or hardwares. The decking timber at bunnings,the El cheapo $10/m stuff is rubbish!! I found another hardware had much superior timber for similar price and significantly less knots! I did use some of the El cheapo stuff for a small job and it went to **** very quick.
     
    Last edited: 20th Nov, 2015
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  16. gach2

    gach2 Well-Known Member

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    cheers for the replies

    funny story bunnings is pretty bad in 4.8m lenght but the local timber yard was rubbish and there price was double bunnings
    but i guess i gotta keep searching

    Wont be starting till mid next week so time to go shopping/hunting
     
  17. Stu

    Stu Well-Known Member

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    Stainless Steel screws - chalk or string a line to get your screws nice and straight and it will look great :) Pine has got a tendency to try and twist in longer lengths- can make short work of nails!
     
  18. gach2

    gach2 Well-Known Member

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    cheers

    went to masters today

    they had some other pine (iti clear pine losp) which is around 50% pricier than bunnings but the pine was good grade

    also had merbau decking which is double the price of pine but now considering that as well
     
  19. bob shovel

    bob shovel Well-Known Member

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    Clear! That's the one you want! The stuff I used had about 20% the amount of knots vs bunnings
     
  20. Scott No Mates

    Scott No Mates Well-Known Member

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    You will need to stipulate 4.8m lengths otherwise you'll end up with mixed lengths and off cuts.

    For the small amount of timber you might be better off using merbau but hunt around on price from a few timber millers.