Garage interior finish

[ryans69chevy]

Just wondering what thickness of plywood I should finish off my walls and ceiling with in my detached garage. It's 24'x32' with 8' walls with a 20'x15' and 10' walls on the back. It looks stupid I'm not sure why someone did it like that. I'm fixing everything up so it's nicer in there. Rotting wood on the bottom plate and such. Also I'm making the ceiling 2' on center. Going to insulate the ceiling with R-19 and then the walls with R-13 or possibly R-11. I'm going to plywood cuz it's my garage and I want more durability. And also I'm not gonna heat it fully all winter just when I wanna go out there and work. Or else have it at a certain temp just to keep the bite away. But since I'm doing that I don't want rock since over time the mud will start cracking... So I'm gonna do BC plywood. I'm thinking 3/8" on walls and ceiling. I'm not sure if that's too much or not enough. What are your guys take on the thickness??

Thanks,
Ryan

[Old Money]

3/8 ply on ceiling 24 inch on center will sag with the weight of insulation on it. use 1/2 inch ply. all around and you will be much happier. old money.

[ryans69chevy]

What's the reason for 1/2 on the walls? You think 3/8 is too skimpy? Thanks for the input by the way.

[71swb4x4]

Plywood is expensive. Have you looked into the first 4' of the walls being plywood and the rest of the walls and ceiling being Sheetrock? That would slow a fire down as well.

[ryans69chevy]

I know that would be a lot cheaper. I just don't want to have the Sheetrock mud and tape start to crack over a couple years of that much temp change. It happened in my parents garage. It took 5 years or so I think but it looks kinda crappy now. And that's because they don't have it heated thought the winter. I don't have the money to keep it heated all winter. I suppose it should be at a constant 40 or so.

[In The Ten Ring]

I am glad you asked this ryans69chevy. I hope to insulate my garage ceiling this summer too but I don't think I am going to finish it with anything...just leave the insulation visible. I do want to floor the attic though. I plan to use 5/8th inch for the attic flooring.

How about you hitting this thread with some pics of what you have now?

[motornut]

We just closed a deal on a house with a unfinished garage.
I got till fall to finish the inside up.
I was planning at least 1/2 inch ply too,need to nail stuff on it

[grumpyolddog]

Hey Ryan how abound precolored steel for the walls, it stands up great to grinding sparks and is easy to install.

[Old Money]

3/8 bc ply is actually 5/16 thick and the center ply has knot holes in it. it will not take a hit of a runaway tool box or a car door. i used 7/16 osb walls and ceiling, cheaper and stronger,painted white ceiling and light gray walls with exterior paint to withstand heat and cool cycles. old money.

[Willowrun]

If you want to hang things on the wall, 1/2 inch thick is the only way to go. I still find the studs when hanging heavier stuff though.

[ryans69chevy]

Any websites I can check that colored steel on or pics of what it looks like in garages? I thought ply would be stronger than osb. I guess I'd rather have BC than osb though since it would take a lot of work to get the osb finished the way if like it. So 1/2 BC is prob what I'm gonna have to do on the walls? Ceiling could still be 3/8 couldn't it? Or?? I'll try and get some pics tom night after work! I should have been taking some of what it looked like before I did some of this stuff. Or some of the crazy stuff I've found when tearing everything apart. There was open electrical boxes buried in the wall, open air splices, and just shotty work. It makes me laugh a little bit how stupid people are... Thanks for all the input of this stuff!

[earl84]

Hmmm, Casselton, ND, huh? That's where I grew up. Small world. Still have family there and will be there for my 30 year HS reunion in July.

[71swb4x4]

IMO 3/8" on the ceiling will sag over time, especially if you insulate it.

[motornut]

Originally Posted by 71swb4x4

IMO 3/8" on the ceiling will sag over time, especially if you insulate it.

humidity will prob help this too

[motornut]

A friend and his father did the walls in particale board back in the 80s
It's all still good,he said they can remove and alter under it easly.

[motornut]

this is the new garage
we were told a new roof.....
nobody said new wood under it,means old tiles removed
then i noticed new outer walls,walked out to see new sideing too.
also not mentioned lol
and it has power,needs more tho
outlined my workbench area

[ryans69chevy]

Trying to upload more than one pic for one post but can't... Or else I'm incompetent lol! This is outside of garage. This window and the one directly on other side need replacing. They were spray painted on the inside I guess? Pretty strange... You can see where I was taking about 8' walls then jumping to 10' walls. Not sure why...

[magicoolbus]

How about FRP on the walls?

[donthekawguy]

My dad used T1-11 on the bottom four feet and sheetrock up from there. He painted the 1-11 blue and the sheetrock white. He had a four inch board screwed in horizontaly where the two met and it was painted red. Looked really cool and he never had a problem with the drywall. He also put up dry erase board everywhere with pens stuck on so in case he thought of something or needed to write down a measurment he could.

[Truckseats]

I used 7/16" OSB. I'm very happy with the finished product.

[donthekawguy]

Originally Posted by Truckseats

I used 7/16" OSB. I'm very happy with the finished product.

Paint 3x3 black and white checker board on the floor and thats what my dads shop looked like.

[ripper70]

I used 1/2 sheetrock on ceilings and 3/8 plywood on walls then caulked seems on the walls and taped and textured ceilings.

[BossHogg69]

Originally Posted by Truckseats

I used 7/16" OSB. I'm very happy with the finished product.

How did you get the OSB to turn out that smooth? That looks very nice.

[ryans69chevy]

Thank you guys. It looks a bit different in there now that I have many projects to keep myself busy!

[Coach529]

I did 7/16" OSB with a 3' tin wainscot and tin on the ceiling.