New Shop build Plywood wall finishing ideas needed.

[Renze]

I was thinking - all that $$$$ spent on a new barn. I would be looking for some type of fire retardant or fire resistant paint.

When the fire is hot enough, the hot wood gas will just ignite on the other side. A guy i know set his mancave on fire when the wet firewood he threw behind the stove, was heated to the point that a single spark sponaneously ignited the wood gas from the heated wood.

Intumescent (?) paint is what my neighbour, who worked at an industrial painter, used to paint structural steel with. It foams up when hot, creating an isolation layer to keep the steel structure under the temperature where the yield stress reduces so far that the columns buckle. It just buys the tenants of the appartment, or the workers of the plant, an extra hour to evacuate before the structure collapses.
After that, the building needs to be demolished anyway.

So intumescent paint in a shed is a waste of money if you ask me. The fire will foam up all that paint so you will have to replace the plywood anyways, and when it has been that hot inside, your tools and project car are gone anyway.

Great stuff to buy time before structural collapse to evacuate people, but its not going to save a wooden shed from requiring full replacement.

In my shed i primed all the OSB to keep molds or light from discolouring it.

 

[EddieWalker]

Just looking at my shop walls, I remembered another huge advantage to using screws and not covering them up.

About a year after my AC unit was replaced, we noticed water on the floor of my shop. The unit is on the other side of the wall. The AC guys didn't get a good seal on the drain line. Looking at it, I realized that it was an easy fix if I could remove the OSB on the shop wall. I think I had it all done in an hour, including putting the OSB back up.

Another time, I wanted a bigger electrical line to go from my panel to an exterior wall. I removed the OSB screws, ran the wire, and screwed the OSB back on the wall. You can't get any easier then that!!!

 

[not2old]

You can fill and tape the joints on plywood just like drywall. When done, you won't see the difference. I've used 5/8 plywood in several areas in my shop and after I get it wired, I expect to blend the two together.

 

[dieselscout80]

I used cabinet screws to hang my OSB (716” or 1/2”) and painted it white. I may caulk the seams later as it will seal it tighter.

 

[Renze]

I may caulk the seams later as it will seal it tighter.

Tongue and groove doesnt come standard in North America?

 

[EddieWalker]

Tongue and groove doesnt come standard in North America?

Yes, it's available in the stores, but rarely used for walls. The only time I use it, is for a subfloor.

 

[ArlyA]

Yes, it's available in the stores, but rarely used for walls. The only time I use it, is for a subfloor.

Its specially made and designed for floors here.

 

[thepumpguysc]

When I put up my plywood walls, I ordered BC plywood..??
The type that’s sanded on 1 side..
It makes for a nice finish and it’s “blonde” so it’s pretty light in there..