Insulated 2x6 frame outbuilding: inside walls material

[Greensleeves420]

Hello,
I am insullating my shop and I'm not sure what type of walls I want to end up with in the inside.
I want the best insulation factor to be the top priority.
I see many room are designed with white "panda" plastic?
But I am leaning towards painted white OSB wood.

I'm in canada so extreme cold is a factor

 

[TurboBucket]

OSB with an FRP overlay. Frp is the white textured vinyl wall you see used in commercial kitchens, butcher shops, walk in coolers etc... Extremely durable, waterproof, and easy to clean.

 

[Nunyabiz]

How about a 2" thick polyiso foam board with the aluminum facing.
Excellent insulation, and its reflective.
2 birds one stone.

Why Rigid Polyiso Insulation Foam Board? — Rmax

Here we are listing all the reasons on why to use the polyiso insulation boards, definition what they are, what are the benefits, etc. Learn more.

www.rmax.com

 

[TurboBucket]

How about a 2" thick polyiso foam board with the aluminum facing.
Excellent insulation, and its reflective.
2 birds one stone.

Why Rigid Polyiso Insulation Foam Board? — Rmax

Here we are listing all the reasons on why to use the polyiso insulation boards, definition what they are, what are the benefits, etc. Learn more.

www.rmax.com

It's hard to mount anything to a wall with 2" foam on it. The foam board goes behind the OSB

 

[Remystemple]

Choosing The Best Internal Wall Insulation For Your Home

Up to 35 % of heat in your home gets lost because of poor insulation. This is not only a matter of comfort and quality of life, but it can also have a significant economic impact.

www.essentialhomeandgarden.com

if you're as far north as i am, -30 to -40c for 6-8 weeks every winter, then you'll probably want the pink stuff. it's in every home here and i can only imagine that's for a reason.

but the link i posted shows alternatives to the old school fiberglass stuff. If you're not too far north you might be able to get away with a spray foam filling.

there's so many good reflective materials to choose from for your inner wall.
i was using panda film before i got grow tents.

 

[Nunyabiz]

It's hard to mount anything to a wall with 2" foam on it. The foam board goes behind the OSB

True if you need to mount a bunch of shyt all over the walls then yeah.
If you only need to mount a couple things here and there then you can put a board between two studs and mount to that.