new shop/garage help #1: how to insulate the walls. vapor barrier or not..

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Blog entry by rf58 posted 04-04-2013 02:21 AM 1827 reads 0 times favorited 5 comments Add to Favorites Watch
no previous part Part 1 of new shop/garage help series no next part

Back to my new garage/shop

we had a great discution about the under the floor chase.
Now what about VAPOR BARRIER ON THE INSIDE WALLS.? It will be a pole type building wrapped in tyvec, With batt insulation. Was going to use foam – a little to pricy .. With a vapor barrier. And metal on the walls …..
Cellulose on the ceiling with a vapor barrier on it. Metal ceiling.
WHAT DO YOU GUYS THINK. IS there a better way..?

-- rf58, Illinois

5 comments so far

View Gator's profile


383 posts in 4191 days

#1 posted 04-04-2013 02:39 AM

Vapor barrier keeps the moisture from entering your insulation. I would always us it.

-- Master designer of precision sawdust and one of a kind slivers.

View Tim Pursell's profile

Tim Pursell

499 posts in 4297 days

#2 posted 04-04-2013 09:39 AM

Vapor barrier on both sides could trap moisture inside the wall cavity. Any external leak or even condensation could build up, rotting wooden structures and rusting steel.


View slmndr's profile


7 posts in 2400 days

#3 posted 04-05-2013 07:33 PM

Vapor barrier always goes on the inside of the wall between the insulation and the drywall (or whatever you choose to skin the walls with).

-- Still looking for ideas and advice.

View Dan Lyke's profile

Dan Lyke

1520 posts in 4640 days

#4 posted 04-10-2013 03:30 PM

I’m with slmndr, in your climate I’d go with vapor barrier, and it’d be on the inside. It requires a bit more care in putting up the sheetrock, but I think it pays off.

I live in a far more forgiving climate than yours, so I just went with faced insulation rather than a full-on vapor barrier for my shop.

-- Dan Lyke, Petaluma California,

View pjones46's profile


1001 posts in 3157 days

#5 posted 04-12-2013 04:00 AM

Vapor barrier always inside and makes sure you tape seams of the plastic with barrier tape.

-- Respectfully, Paul

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