OSB protection

[willsie01]

I’m using OSB (because I already have it) in an area where it might get water splashed on it so want to protect it. Would lining it in a waterproof sheet be practical? I’d take the lining over and under the edges.

 

[Woody2Shoes]

Is this indoors or outdoors? Will the protective sheet degrade in the UV of sunlight? Paint might be sufficient, depending on the situation.

 

[willsie01]

It's indoors and not in the line of sight of a window.

 

[Cabinetman]

OSB is pretty waterproof to start with, it depends on the situation but I have seen OSB used outside with nothing on it at all and lasts for years, it does go gray after a few years of course. Ian

 

[MARK.B.]

I never stood outside for years with nothing onbut I still went grey
The odd splash of water should be no problem as long as it doesn't pool for long periods,what will it be used for ?

 

[willsie01]

I'm making a platform for a shower tray.

 

[Woody2Shoes]

I'm making a platform for a shower tray.

Oh - yes, it will get wet. OSB3 is pretty good. I'd give it a couple of coats of polyeurethane varnish and use 'defensive detailing' to keep water out, and to let the timber dry efficiently when that doesn't work.