My Shed and I - Partition Wall - Materials

[HappyHunter]

Hi,

Firstly, sorry, it's ended up a rather long post !

I am hoping you can help me with the right terminology when I go to Jewson's to get some wood !!!

My Partition ...

2780mm long, height 2260mm rising to 3000 mm at the back wall.

Have been googling (and looked at the diy wiki), and have sold myself on the idea of 3"x2" studs.

I want 12mm ply one one side, and don't really care about the other, so would go for 6mm ply (would probably want some shelves on the other side and could put noggins into my parition at suitables places if I want).

Remember my outbuilding could be damp. So I guess I want treated wood for the studs ?

OK, all set then, right ? Errr I then look at the Jewsons website .. errrr, what a vast array of choices, I am lost ...

So first, 3"x2" in new money, that's 47 mm by 75 mm ?

I did pop into Jewsons this morning, guy there put up with my lack of knowledge, he did mention that 47x75 was the new size, but that nowadays when it's planed down, it's actually 40 by 70 (or something like that ...) From what I'd read, isn't that something that I avoid, CLS or something ? He did mention if I wanted to go the CLS route ... what the heck is that .... I was after a price list actually, but he said they didn't have one, best to go in with a list of what I need, and they'll give a quote.

By the way, Jewsons is my ONLY choice, they are the ONLY people that deliver here.

So, Jewsons website, product catalogue, timber .. Even the subtitles are confusing for me ! Carcassing, hardwoods, machined softwoods, sawn joinery, scaffold boards, treated sawn carcassing ...

So, I'd guess at Treated Sawn Carcassing 47mm, which bring up 2 choices,

47 x 50mm and 47 x 75 mm.

So I reckon this ...

does that look right ?

I am looking for a cost effective solution here, and am not sure if picking the above would be a more expensive option, when I possibly don't need it.

Next .... PLY !!!!!!!

So, there's a whole heap of stuff under sheet materials, and under Ply, we have 3 types, hardwood, marine, softwood. I know what marine is, from this group. Hardwood versus softwood ? Under softwood, we've got "non structural" and something else. Under hardwood, we have brazilian, far eastern, bla bla I guess there are various price differences between the different types !

I don't know what i need ! The outbuilding, will be an occasional use stable.

I guess hardwood is more expensive, when would you use hardwood versus softwood.

ALSO !!!!!

Round the other walls, I need to put a kickboard in. 4 ft high round all brick walls, 12mm ply again. It's purpose: if a pony was to kick, you don't want it to kick a brick wall, much better to kick a bit of wood that has some natural give to it, less likely to cause serious injury to the pony. For attaching this to the brick wall, I was thinking some 2x1 as the framing, it's only job will be to hold the 12mm plywood in place. Thoughts ? So that's 25mm x 50mm. I don't see any in the treated section at Jewson, there's 25x50 under Carcassing, 25mm called "sawn batten"???

Back to studs .... Just noticed under carcassing, dry graded 47mm, there's "Sawn Softwood Kiln Dried 47.0 x 75mm " would that be an alternative to the treated wood for the stud partition ?

Jeez it's confusing !

Any help appreciated. I'd like to go into Jewsons with at least some idea of what I want(?)/need.

Ohhhhh my other worry/though. I think the guy said today that the studs tend to come in 4.8m lengths. I take it, when working out what I need, it's better to plan for your studs (and head/sole plates), being in one piece ?

Thanks.

[dom]

The cheapest deals come from using what every other builder uses.

As your partition rises to 3m, I'd suggest using 47x95mm studs - a typical cost would be =A31.20 to =A31.50 a metre - obviously cheaper the more you buy.

Standard spec would be "regularised and treated" - this means its been "hit and miss" planed so no dimension exceeds the spec, that the corners are rounded off (makes for nicer handling), and it's been rot treated.

Get 4.8m lengths delivered, and chop them to whatever you need. You'll easily use up the offcuts for noggins etc.

Typical low-cost sheet materials are structural ply, or OSB3 - both around =A325/sheet for 18mm thick in smallish quantities.

Again, I'd uses the thicker, heavier stuff right the way through - the cost is marginal, and you'll get the durability against hard knocks.

The only thing I would check - is whether the timber treatment is any kind of health hazard to animals.

[NT]

semi-necessary. You can screw offcuts together, but its quite a bit better to use continuous lengths.

if its inside, on a raised floor, and doesnt get wetted often then KD whitewood's fine, and the cheapest. No need for planing / treating / CLS / ALS. If you want to go even cheaper and dont worry about looks you could use warped timber from an auction. If youre really brassic you can use scrap offcuts screwed together.

Timber size? Its like asking how long's string. Anything from 2x4 even down to 2x2 if you must. Don't forget that with 2x2 your skin timber will add a little to the strength.

Skin? Ply, OSB or green chipboard. Ply type? If its to resist wetting, shuttering ply. If it never gets wet, the cheapest will do. Chip's much cheaper than ply.

Stud spacing? If money's tight you can go for 2' spacing instead of

16". 2x1's fine for lining. Treated as it'll get wet. No need to be planed.

NT

[John Rumm]

Right, will try ans translate as we go then...

Fair enough...

Either than, or spray the lot with some wood preserver...

Yup.

CLS (Candian Lumber Standard IIRC) is regularised - basically planed a little, and the sharp corners knocked off. Its often quite cheap compared to ordinary sawn timber, and designed for studwork. The only downside for you application is it is not usually treated.

Sounds par for the course - the price varies! (don't take the first offer)

Carcassing and "sawn" usually imply rough wood sawn to dimension, but not otherwise finished or planed. Typically pine / spruce style softwood.

Hardwood - will mean what it suggests - but without further context does not tell you much.

Machined softwoods - that will be second fix timber like architraves, skirtings etc that has been planed and then further machined to add mouldings etc.

Scaffold boards - big planks for use on scaffolds!

Treated... basically pressure injected with various chemicals / metals etc to add rot resistance.

Yup that should be fine.

It will be a bit more pricey than CLS. Depends on how damp the environment inside your wall as to how worthwhile you think it.

ok, forget marine - way ott.

You need a WBP ply. The hardwood varieties will look nicest and have smooth consistent surface. The cheaper shuttering plys will contain more softwood, and are often made from spiral cut laminations - so you get blemishes like knots etc.

Durability, appearance, and finish. The hardwood will wear better - but it depends on how much abuse you expect it to get. If its lots you may be better off with something cheaper and sacrificial.

A pack of "tile batten" it probably a reasonable choice - its cheap, regular sized, and treated.

Yup. Check the price compared to CLS though - its often more expensive even though its had less done to it!

Studs certainly - since your wall is changing height, you will have to work out the best lengths to by to efficient use. Remember the offcuts can go towards noggings.

[NT]

undersized scrap can too, if you need to be tight with what you buy

NT

[JimK]

Don;t let that stop you from getting comparable quotes from their competitors to haggle a bit with.

Even if they already know they are your only option....let them know you know how much they are shaftin you - practise the whistling intake of breath so beloved of the profeshunals....enjoy :>)

Cheers JimK

[newshound]

Remember you don't want horses nibbling tile batten or other aggressively treated stuff (but fine to use as long as they can't get at it)

[NT]

I missed that bit. There's a seller on ebay that does or did =A3200 of green oak much cheaper than jewsons softwood. His choice of sizes.

NT