- Joined
- 29 Nov 2019
- Messages
- 206
- Reaction score
- 49
- Country
Alternatively, you could rip down a 125mm to exactly what you need.
Need 4x2 joists, can I use CLS Softwood Studding 100 x 50mm x 3m (4" x 2") NOM PEFC
- Thread starter JP_
- Start date
Sponsored Links
- Joined
- 29 Nov 2019
- Messages
- 206
- Reaction score
- 49
- Country
Alternatively, you could rip down a 125mm to exactly what you need.
- Joined
- 29 Nov 2019
- Messages
- 206
- Reaction score
- 49
- Country
Good point, I just presumed they were first floor joists so height was fixed. If ground floor then I'd notch something bigger.
Sponsored Links
- Joined
- 29 Nov 2019
- Messages
- 206
- Reaction score
- 49
- Country
No need for packers so arguably better?
For that span 4x2 or 95x47 or whatever will be fine. I'd just pack them up - you might have a timber wall plate on the ends or they'll just be sat on bricks but its highly unlikely to be perfectly level - some thin plywood rectangles with some thin bits of plastic for really fine adjustment. You'll probably need to fill the sides of the pockets with some mortar as well. And, you need to add 100mm for your bearings onto your span length- 2.9+0.1+0.1= 3.1m so you'll need 3.6m lengths (they don't do 3.2). If you need to replace them in halves because you can't get full ones in then it's 2x 1.65m lengths, or 2x 1.6m if you want them to butt up on the sleeper wall so they're straight across the room.
- Joined
- 17 May 2012
- Messages
- 10,782
- Reaction score
- 849
- Country
I don't follow that. I they were 3.1m they would be longer than the room. I am replacing existing ones that are 2.9m long, I just need the same again.
I guess 95mm with some 5mm ply cut in strips would work - probably cheaper than getting bits made to order.
I guess 95mm with some 5mm ply cut in strips would work - probably cheaper than getting bits made to order.
- Joined
- 29 Nov 2019
- Messages
- 206
- Reaction score
- 49
- Country
So just make sure you've got about 100mm of bearing either end whatever that measures to.
cbde is suggesting that they are going into 100mm pockets in the wall of the room.
Hence 2.9m (width of room) + 0.1m + 0.1m (two pockets in walls) = 3.1m length of wood needed.
SFK
Last edited:
- Joined
- 17 May 2012
- Messages
- 10,782
- Reaction score
- 849
- Country
Ah, I see. No pockets.
Plan B - my local timber merchant can't do 100mm finish, but can do 97mm as standard, and cust to lengths for me for easier transport (I think I can get 2.9m in my estate ...).
I could just get a bunch of these 3mm ply offcuts
https://www.ebay.co.uk/itm/3mm-Plyw...b376069fb:g:gosAAOSwr-ZdSWiV&var=553869447269
is there a cheaper shim option though?
Just found these https://www.orbitalfasteners.co.uk/products/3mm-white-flat-plastic-packer-24x100mm-pack-of-100
although these are not solid, so probably no good
would that be better? Seems a bit crazy to put wood on top of bits of plastic, but I guess this is the modern metric world!
Links in this post may contain affiliate links for which DIYnot may be compensated.
- Joined
- 29 Nov 2019
- Messages
- 206
- Reaction score
- 49
- Country
Anything non compressible will do really, wood, slate, tile etc. I've used plastic packers in the past, worked okay. Or notch a deeper timber.
Links in this post may contain affiliate links for which DIYnot may be compensated.
- Joined
- 17 May 2012
- Messages
- 10,782
- Reaction score
- 849
- Country
I think these might do the trick - steel, with a gap in the middle to screw through
https://uk.rs-online.com/web/p/pre-cut-shims/3827757/
But a bit pricey!
https://uk.rs-online.com/web/p/pre-cut-shims/3827757/
But a bit pricey!
- Joined
- 17 May 2012
- Messages
- 10,782
- Reaction score
- 849
- Country
Found somebody selling 3mm plyboard off cuts.
And these https://www.lawsons.co.uk/product/3-0m-x-47x100mm-treated-c24-carcassing-timber/t00001138
So will see how big thsee are when they. Can also order the floorboards and insulation from them, so might as well give these guys a go.
And these https://www.lawsons.co.uk/product/3-0m-x-47x100mm-treated-c24-carcassing-timber/t00001138
So will see how big thsee are when they. Can also order the floorboards and insulation from them, so might as well give these guys a go.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
Similar threads
