Welcome to the The Garage Journal Board forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   The Garage Journal Board > The Garage > Heating and A/C

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Search this Thread Display Modes
Old 01-28-2011, 06:39 PM   #1
SpeedCoach
Senior Member
 
SpeedCoach's Avatar
 
Join Date: Oct 2007
Location: Chicagoland
Posts: 573
Default Is there any benefit to insulating an unheated garage?

I'm getting ready to hatch my plan on "finishing" my garage. It's not really a finish, just a better/cleaner organization with some homebrewed storage cabinets, etc.

The garage is unheated beyond my little portable propane heater that just follows me around when working in the winter - and I frankly have no plans to ever install permanent heat...I'm hoping this is merely the first garage I'll have, and not the last. at best I'd consider a tank-top propane heater simply to warm the space a bit more when I'm out there....which in the coldest part of winter isnt much!!!

2 of my 3 walls (the 4th wall basically being the garage door) are skinned with 1/2 plywood....(read: very easy to remove if I want). The 3rd wall is unfinished drywall, loosely attached via nails around it's perimeters by the PO. So as of now, it's also relatively easy to remove and get behind.

My reorganization plan centers mostly on the as-of-now unfinished drywall portion of the garage...it is here where I will be building my cabinet storage system. Since I'm going to have this entire wall stripped of anything prior to starting this project, I'm debating taking the drywall off and putting insulation in.....it's never going to be easier to do than now. Of course if i did it on this wall, I'd continue around the perimeter - which would be pretty easy simply b/c it's plywood attached with screws. So my debate is to insulate my unheated space....

The garage isnt huge (20x21 ish), and the cost of insulating isn't back breaking and not really my concern....I could do the drywalled wall now, and hit the rest incrementally through the year before next winter. then again if there is no advantage I'll save the money, and the time, i would spend insulating, and just get cracking on the storage build.

I know I know I know.....what about the ceiling? as of now it is basically open joists. Part of my plan is to get some plywood onto the joists to improve "attic" storage, but I really have no plans to insulate up there. So any heat I generate will go right on up and out, short of what the new attic storage wood can hold in....but again, the heat will be temporary and not a permanent install.

So what are your thoughts? any benefit to adding wall insulation? skip it and get to work?
SpeedCoach is offline   Reply With Quote
Old 01-28-2011, 06:58 PM   #2
overdriv
Senior Member
 
Join Date: Jul 2010
Location: Central IL
Posts: 179
Default Re: Is there any benefit to insulating an unheated garage?

IMO if you aren't going to insulate the ceiling, no need to bother with the sidewalls.
overdriv is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 01-28-2011, 07:35 PM   #3
Fastback
Senior Member
 
Fastback's Avatar
 
Join Date: Oct 2010
Location: Indy
Posts: 516
Default Re: Is there any benefit to insulating an unheated garage?

If you want to be warm with a tiny heater you should build it like a thermos, and do the ceiling as thick as you can..
Fastback is offline   Reply With Quote
Old 01-28-2011, 08:10 PM   #4
Gary S
Senior Member
 
Join Date: Dec 2008
Location: Bismarck, ND
Posts: 2,973
Default Re: Is there any benefit to insulating an unheated garage?

Yes, insulation is always worth doing no matter if you heat the garage or not. My detatched garage is well insulated. In the summer, it stays 20 or more degrees below outside temperature just by keeping the doors closed. In the winter, the garage stays 30-40 degrees above outside temperature with no heat added. There is enough ground heat rising through the slab to heat it that much and the insulation holds the heat in the garage.
Gary S is offline   Reply With Quote
Old 01-28-2011, 10:18 PM   #5
thammel
Senior Member
 
Join Date: Oct 2005
Location: Maryland
Posts: 581
Default Re: Is there any benefit to insulating an unheated garage?

As the prior poster said, the insulation will greatly reduce temperature swings in both summer and winter.

Tom
thammel is offline   Reply With Quote
Old 01-29-2011, 10:29 AM   #6
SpeedCoach
Senior Member
 
SpeedCoach's Avatar
 
Join Date: Oct 2007
Location: Chicagoland
Posts: 573
Default Re: Is there any benefit to insulating an unheated garage?

Quote:
Originally Posted by Gary S View Post
Yes, insulation is always worth doing no matter if you heat the garage or not. My detatched garage is well insulated. In the summer, it stays 20 or more degrees below outside temperature just by keeping the doors closed. In the winter, the garage stays 30-40 degrees above outside temperature with no heat added. There is enough ground heat rising through the slab to heat it that much and the insulation holds the heat in the garage.
Quote:
Originally Posted by thammel View Post
As the prior poster said, the insulation will greatly reduce temperature swings in both summer and winter.

Tom
hmmm thanks guys. In writing my OP I basically started talking myself out of it...and pretty much expected a lot of folks to suggest skipping it. You've given me more to think about. Thanks!
SpeedCoach is offline   Reply With Quote
Old 01-29-2011, 10:57 AM   #7
mobetta
Senior Member
 
Join Date: Feb 2010
Location: twin cities, mn
Posts: 251
Default Re: Is there any benefit to insulating an unheated garage?

whats it gonna cost- about $150 and a few hours of work, id do it.
mobetta is offline   Reply With Quote
Old 01-29-2011, 12:30 PM   #8
dlenkewich
Senior Member
 
Join Date: Jan 2011
Location: Saskatoon, Sk, Canada
Posts: 1,409
Default Re: Is there any benefit to insulating an unheated garage?

If you were going to insulate anything, you should start at the top and work your way down. Heat rises.

By closing in your walls with no insulation and adding a warm/cold differential in the winter, your adding a space for moisture to grow which could turn into mold growth.
dlenkewich is offline   Reply With Quote
Old 01-29-2011, 01:23 PM   #9
lilredex
Senior Member
 
lilredex's Avatar
 
Join Date: Apr 2006
Location: Toronto
Posts: 2,599
Default Re: Is there any benefit to insulating an unheated garage?

As others have stated heat rises, but you will see a noticeable difference both in the winter and summer if you just do the walls. My ceiling was left open as I did not want to sacrifice the storage area up there.

I added fillers to the walls to bring them out to 2 X 6 dimensions, then insulated with F'glas and covered everything with 1 X 10" pine rough boards(freebies).

Would I do it again? Definitely..........makes a huge difference (and also contains much of the noise too)

lilredex is offline   Reply With Quote
Old 01-30-2011, 08:59 AM   #10
woody2136
Member
 
woody2136's Avatar
 
Join Date: Oct 2010
Location: Walton, NY
Posts: 96
Default Re: Is there any benefit to insulating an unheated garage?

When I bought my house there was R11 in the walls and nothing in the open rafters. It was hot as hell in there during the summer. I added R30 to the ceiling before winter and it definitely stays warmer inside now. I don't know that it's worth it to do the walls and not the ceiling.
woody2136 is offline   Reply With Quote
Old 01-30-2011, 09:22 AM   #11
trythis
Senior Member
 
Join Date: Dec 2009
Location: st louis
Posts: 321
Default Re: Is there any benefit to insulating an unheated garage?

When building our house inside an old garage structure, we did not have ceiling insulation for the first year. In the hottest part of summer, it was 30 degrees hotter inside than out. When adding the ceiling, you could walk under that portion of the space and feel the temp drop 20 degrees before insulation. After insulating it was tolerable with the widows open. My shop is in the same building and hasn't been insulated yet and its pretty awful. As soon as I can, I am going to add a ceiling and insulate it.
trythis is offline   Reply With Quote
Old 01-31-2011, 09:44 PM   #12
GrandmaSideways
Senior Member
 
Join Date: Jan 2011
Posts: 220
Default Re: Is there any benefit to insulating an unheated garage?

Trust me, do it.

My parent's garage is the one I'm turning into my working space. They've owned the house since 1988, and I was the first one to go into the garage attic a few months ago. Zero insulation in the ceiling. Ugh. Basically, in the summer it gets hot as hell in there. I know two of the walls are insulated as they face the house, but the door wall isn't (and the garage doors are solid wood) and the exterior wall, well I basically doubt it... I haven't experienced mold growth (and I'd assume after 31 years if it were happening it'd be on the outside garage wall side by now and musty) but basically it's extremely hot. A good bit warmer than outside. In winter, it's cold, however I've never made an effort to heat it.
i think I'll be insulating the 241 square feet of ceiling soon.
GrandmaSideways is offline   Reply With Quote
Old 02-01-2011, 10:18 AM   #13
z28toz06
Senior Member
 
z28toz06's Avatar
 
Join Date: Nov 2005
Location: Connecticut
Posts: 1,006
Default Re: Is there any benefit to insulating an unheated garage?

Quote:
Originally Posted by lilredex View Post
As others have stated heat rises, but you will see a noticeable difference both in the winter and summer if you just do the walls. My ceiling was left open as I did not want to sacrifice the storage area up there.

I added fillers to the walls to bring them out to 2 X 6 dimensions, then insulated with F'glas and covered everything with 1 X 10" pine rough boards(freebies).

Would I do it again? Definitely..........makes a huge difference (and also contains much of the noise too)

Heat doesn't rise, warm air does. Heat radiates evenly from the warmer surface on all exposed sides.
__________________
Law of Mechanical Repair - After your hands become coated with grease, your nose will begin to itch and you'll have to pee.
z28toz06 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 04:43 PM.