Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 01-28-2008, 04:25 AM   #1
Member
 
BleachCola's Avatar
 
Join Date: Dec 2007
Location: SE Michigan
Posts: 63
Rewards Points: 0
Share |
Default

insulating garage and its cieling, don't want to enclose attic


hi,
I am currently wiring up and insulating a 900sq ft garage with R9.5 on the walls and R15 on the cieling. I am hanging drywall on the walls but do not want to do a drywall or drop cieling, I want to leave the area open so that the heating system will be visible and storage will be easier. Is it okay to put the cieling insulatation all the way on the garage's cieling inside, without a attic space or enclosed area. I plan to hang dark plastic below the insulation. The garage is not attached to the house and I plan on running a forced air heating system and maybe AC in the summer. What are the negatives to this plan besides using more heat to warm the garage.

BleachCola is offline   Reply With Quote
Old 01-28-2008, 05:03 AM   #2
Union HVAC Tech.
 
Join Date: May 2007
Location: New Jersey
Posts: 607
Rewards Points: 0
Default

insulating garage and its cieling, don't want to enclose attic


If you seal the bay spaces your going to rot them out. If they don't have moving air the temp. differential between inside and outside will cause condensation between the insulation and roof deck, rotting it out in short order. You need to have some type of moving airspace between the roof deck and the insulation.

bigMikeB is offline   Reply With Quote
Old 01-28-2008, 05:41 AM   #3
Member
 
BleachCola's Avatar
 
Join Date: Dec 2007
Location: SE Michigan
Posts: 63
Rewards Points: 0
Default

insulating garage and its cieling, don't want to enclose attic


thanks for the fast answer, I did not think of that. so there is no way to keep the ceilng open while insulating it? how are cathedral ceilings insulated in homes?

thanks
BleachCola is offline   Reply With Quote
Old 01-28-2008, 05:52 AM   #4
Newbie
 
Join Date: Jan 2008
Location: Virginia
Posts: 1
Rewards Points: 0
Default

insulating garage and its cieling, don't want to enclose attic


You can insulate the way you have described but must still allow for ventalation. the Big box stores (Lowes, Home Depot , Etc) sell the material you need and it is easy. Here is an example of what you need.

http://www.adoproducts.com/duro.html

You just tack it up and then put the insulation up. Make sure your Vapor barrier is sealed all around to control moisture.

Hope this helps
Mongoh53e is offline   Reply With Quote
Old 01-28-2008, 05:55 AM   #5
Member
 
BleachCola's Avatar
 
Join Date: Dec 2007
Location: SE Michigan
Posts: 63
Rewards Points: 0
Default

insulating garage and its cieling, don't want to enclose attic


oh so that is what that's for, I have that in a 2nd unfinished bathroom. I see how that works, but this adds a considerable amount of work, maybe I will just create a regular drywall ceiling and lay bats of insulation on top of it.

thanks
BleachCola is offline   Reply With Quote
Old 01-28-2008, 05:57 AM   #6
Union HVAC Tech.
 
Join Date: May 2007
Location: New Jersey
Posts: 607
Rewards Points: 0
Default

insulating garage and its cieling, don't want to enclose attic


Quote:
Originally Posted by BleachCola View Post
thanks for the fast answer, I did not think of that. so there is no way to keep the ceilng open while insulating it? how are cathedral ceilings insulated in homes?

thanks
The way they do homes is with much larger rafters than used for a garage and not completely filling the bay space or with those styrofoam baffles but I haven't seen too many of those used. And they tend to leave a small amount of space at the upper most part of the structure where they use ridge venting.
bigMikeB is offline   Reply With Quote
Old 01-28-2008, 06:37 AM   #7
Member
 
BleachCola's Avatar
 
Join Date: Dec 2007
Location: SE Michigan
Posts: 63
Rewards Points: 0
Default

insulating garage and its cieling, don't want to enclose attic


thanks big Mike

BleachCola 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.