Which is Better OSB or Plywood #shorts

Iam not a tradie but have used marine ply twenty odd years ago in uk it did what it said on the tin and held up well on a garage roof. I did a little diy project in Philippines recently,the shit they are calling marine ply is a joke top layer peeling while fixing it. Utter rubbish from china, they supply 99% of building materials over there most of it pure shite.

I have two for breakfast with sugar and milk.

You should talk to the Ship Happens people they are using marine ply but Im really not convinced it’s the most suitable.

He resembles tony cascarino

OSB used to be cheap as chips,

Great until any of the OSB getting wet, like when the house is getting built.

What’s that got to do with heat pumps haha you are getting good with them heat pumps cost you a packet talks.

OSB takes the resin a lot better too

And thats why I fully floored my brother’s loft with OSB. Boom. 😅

OSB is cheap cos its crap! 🤡🌍

😎👍🏻

OSB is a pain in the ass for when you have to screw close to the edge or corners, the chunks are usually in such a way as to divert the screw into its weakest point usually cracking the edge, only solution I can think of is using extra batons to stay away from the edge, I could pilot hole the edges but that’s extra time. I suppose OBS is superior still though

Roger.. Your advice in your field is unsurpassed (along with Robin Clevitt). You should both be the Governments' Building Tsar's.. 💯%

Id call that chip board

I built a shed from OSB it was just a quick build for storage but it lasted 20 years before the bottom parts started to rot. This was in the UK so it's done very well

I represent a Brazilian plywood Manufacturer you need to Specify EN636-2 structural. UKCA 2+ you are talking about non structural mainly Chinese with A type 2 non exterior glueline

We sell 18mm 7 ply from Lavrasul

Make sure you have health insurance when you see the current price of marine ply 😂

UK: WBP - Weather and Boil Proof - Refers to the glue used and isn't always indicative of quality plies. I designed and built a 6-bed timber-frame house, on site, as the American method, and used OSB3 for all the sheathing.

I built a garden shed and was advided to use 18mm OBS3 for the flloring. Treated both sides with wood prreserve. The floor lasted about 1 year when one day my foot went through it, rubbish for this job. I re-planked it using tanalised 150 x 18mm Fencing Boards. Great job.

Built yachts for years using composite materials such as GRP! You should always use osb3.

Flat roof manufacturers would tell you not to use flat roofs, if it wasn’t so bad for their business

Don’t use initials. Some of us have no clue what you’re on about !

So that's why they used that.

I use SP101 Indonesian ply for laying over my overlay underfloor heating. It's a bit expensive but it doesn't de laminate.
£60 plus vat per sheet off 9mm !!

What is your take on MDF as i cannot stand the stuff. I do like Marine ply and if i can get it on the cheep then i will get it as wood is so dear to buy it . Just hate MDF big time .

The ply wood i just bought from a big store is absolutely rubbish. I sat it on a table next to the shed after around two hours the sheet of plywood was warped badly, and there is no way i can use it for the door i was going to use it for. Absolute rubbish.

I boarded a long dormer roof with wbp plywood, the roof dipped and failed because of the voids and poor manufacturing and glue. The only thing I use it for now is van shelving, osb all the way!

HE was much better as the emperor in star wars that home improvement TV.

Osb is great if u love getting splinters !😂

I had an extension done 5 years ago when a gulley was put in place to adjoin two roofs. OSB board was used and fibreglass on top. It was discovered a few days ago to be taking in water and the edge of the board has blown and when you press down a small amount of water comes out. What is required to fix this problem please. Is it repairable or does it need complete replacement? Please advise?

Plus you get the added bonus of longer rain protection in the OSB if you get caught out in the lovely British weather

When I was a specialist membrane system installer I always used OSB unless the customer specified plywood, if that was the case I would use marine ply for the very reason of delamination, that was almost 20yrs ago now, I dread to think how much those sheets cost nowadays😮

I used marine plywood for a drain cover. It lasted about a year before it started to delaminate. I thought I was being clever!

Normally this guy gives hoax advice, but on this occassion he is wrong. OSB is very bad.

That stuff is crap. It doesn't hold up to the elements like plywood.

OSB

My dad bought some sheets of supposed marine grade ply a few years ago to use on his wee boat. Was properly installed, but due to illness, the boat hasn't been near the water. He wasn't very happy to see it all delaminating within 18 months.

Good plywood beats the shit out of OSB all day, everyday.

1986 we built a two storey shop inside an empty railway arch in Essex……. It leaked and we dealt with the water with polythene…..

We built the whole thing from OSB which I recall was termed Sterling board back then(?)

We got sneered at, but it worked brilliantly with sawn 4x2 framing to support it 🙂🇬🇧

maybe don’t build a house out of cheap shit americans

Is it better to use small sheets or large sheets of OSB for a GRP roof? My supplier said small sheets area better because they allow more expansion???

I always thought it was a heat issue causing delamination with ply. As ive only seen it happen on epdm

What are you on about , people use marine ply building boats . They DO NOT USE OSB . Yeah kinda explain that then ! That’s personal and commercial construction of boats using the same GRP enclosed method ( fibre glass over wood )

Oh really, no voids? The rain goes through it like a sieve when I was building a roof.
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I disagree, plywood is better product ,but osb is cheaper

I live on, it's stronger ,it's cheaper and it too can be water proofed. Ironically,your walls and floors are made out of osb but not traditionally roofs., both plywood and OSB can delaminate if wet so it doesn't matter. Use good wrap and you'll be fine.

Zip system is nice OSB but it’s going to cost ya

OSB aslong as you keep it dry

OSB hates water. But actually it loves it as it absorbs it and then warps and turns to weetabix. Total sealing is required, but is not always possible to achieve 100%.