OSB
- Thread starter artie
- Start date
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SammyQ
Established Member
Artie, the old hardware yard behind Strandtown Police Station had O.S.B. walls on its shed for more years than I can remember. Wilbur and the gang did NOT paint or treat it in any way and it was still going strong when he sold up and they built those ghastly yuppie flats there.
Cabinetman
Established Member
This was a recent thread, lots of answers on there.
Phil Pascoe
Established Member
I thought I posted this but apparently I didn't -
https://www.ukworkshop.co.uk/threads/feasability.147296/post-1727944
https://www.ukworkshop.co.uk/threads/feasability.147296/post-1727944
I’d personally not use osb externally unless I had no choice for whatever reason. I can only imagine that the quality of osb years ago mentioned by @SammyQ was vastly different from today’s standards. Even the ply they use to fence off building sights and empty buildings does last long . If I did have to use it outside then outdoor varnish or bitumen or other oil based exterior paint to give it a fighting chance.. just my opinion .
artie
Sawdust manufacturer.
Thanks.
I made a small temporary chicken coop in a hurry one afternoon 2 or 3 years ago I can't remember.
Since it was only temporary I didn't treat or paint it at all.
It caught my eye the other day and I looked it over. It is in surprisingly good nick.
That started me wondering why it's not more widely used.
Hence this thread.
I'd trust OSB over modern ply (unless an expensive true marine grade) any day for durability - much higher glue content and the way it is made means it is more impregnated not just sitting between layers.
That does not stop it being rough as a badgers wotsit.
paulm
IG paulm_outdoors
Not all osb is the same ! Osb2 doesn't last long outdoors but osb3 contains much more glue and is more water resistant and will last a lot longer.
I was aware of different grades but didn’t know about the glue content, I’m not a osb fan but hear what you say . Agree about most plywood though..
I'm not a fan of it either, it's so rough. But got to give it some grudging credit where due for its better qualities. And now its back down to reasonable prices it's back to being a useful budget option for rough (or hidden) purposes!
Tbh i seam to recall a few years back an option of osb had a resin coat to it or a heavy duty acrylic paint of some type , not seen it since though but I remember saying to a friend- I wonder how long that would last outside ..
Interesting, OSB3, is this Stirling Board ?
Phil Pascoe
Established Member
Oriented Strand Board. Yes.
Built my "Man Cave" with OSB3, breathable membrane, roofing battens, then clad over the top. In much the same way as all the loft extensions around here have been constructed. That was 13 years ago. Still bone dry and rot free.
artie
Sawdust manufacturer.
What cladding did you use?
Hhmmm..I'm thinking backs of wall-hung cupboards etc instead of ply...(Saving SLW tokens et cetera. )
TomGW
Established Member
SLW?
Systematic Lumpsum Withdrawal??
I've found OSB to be unexpectedly robust, unpainted, outdoors and exposed to the elements. For example, a part sheet on top of a cement mixer to protect from the weather - 2 years on its still fully intact and doing the job perfectly.
I've extended to the rear of the house with a modern flat roof extension. The roof is GRP and the required spec for the deck was T&G OSB and specifically NOT ply, even marine ply. This is because the ply has a tendency to delaminate and OSB is considered to be more stable.
For a DIYable flat roof I consider this unbeatable.
Systematic Lumpsum Withdrawal??
I've found OSB to be unexpectedly robust, unpainted, outdoors and exposed to the elements. For example, a part sheet on top of a cement mixer to protect from the weather - 2 years on its still fully intact and doing the job perfectly.
I've extended to the rear of the house with a modern flat roof extension. The roof is GRP and the required spec for the deck was T&G OSB and specifically NOT ply, even marine ply. This is because the ply has a tendency to delaminate and OSB is considered to be more stable.
For a DIYable flat roof I consider this unbeatable.
SLW tokens - Scottish Laughing Water tokens
Also RLW tokens - Red Laughing Water tokens.
Thanks for your info, seems ideal for garden tool shed shelves et cetera.
Also RLW tokens - Red Laughing Water tokens.
Thanks for your info, seems ideal for garden tool shed shelves et cetera.
20 years ago I built a shed out of the bitumen coated osb that was then available from Wickes. Lasted well only took it don when we built an extension
