DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Framing and Foundation > Garage Conversion-Subfloor




Reply
 
Thread Tools Search this Thread Display Modes
Old 01-03-2010, 07:49 PM  
cibula11
Senior Member
 
Join Date: Dec 2006
Posts: 331
Default Garage Conversion-Subfloor

Our attached garage will become a bedroom/bathroom. The garage sits about 3 ft below the level of the house. On the side of the garage where the house and garage meet, the concrete block foundation of the house extends up.

I need to attach a ledger (basically building a deck) a few inches off the garage floor so that plumbing and insulation can be added. My question is, can I attach the ledger to concrete block? I assume the block is hollow.

If not, is there another solution? (Could I build a 2x4 wall and attach the ledger to that?)

Or run a PT plate along the floor of that wall and use 4x4 posts to act as beams?



__________________

Last edited by cibula11; 01-03-2010 at 08:12 PM.
cibula11 is offline  
 
Reply With Quote Quick reply to this message
Old 01-03-2010, 08:50 PM  
inspectorD
Housebroken
HRT_MODERATOR.png
 
inspectorD's Avatar
 
Join Date: Dec 2005
Location: Litchfield, CT
Posts: 4,093
Liked 125 Times on 105 Posts
Likes Given: 319

Default well

I would go with the continuos wall for support, that way if any changes need to be made like cuttouts for later, you will have support.



__________________

Just My
Made in the

inspectorD is offline  
 
Reply With Quote Quick reply to this message
Old 01-04-2010, 10:33 AM  
cibula11
Senior Member
 
Join Date: Dec 2006
Posts: 331
Default

Last night I rethought all of this. Tell me if you think this is reasonable.

I will lay 6mm poly, followed by p.t. 2x4 sleepers that will run the perimeter of the floor and also down the center. Then, in between each 2x4 section I will lay by foam board (polyiso...) taping and sealing all joints. Next I will run the joists perpendicular across the sleepers and attaching them to the perimeter walls. This would allow me to insulate the floor and not have to use a ledger (or load bearing ledger) along the concrete block.

__________________
cibula11 is offline  
 
Reply With Quote Quick reply to this message
Old 01-05-2010, 06:46 AM  
inspectorD
Housebroken
HRT_MODERATOR.png
 
inspectorD's Avatar
 
Join Date: Dec 2005
Location: Litchfield, CT
Posts: 4,093
Liked 125 Times on 105 Posts
Likes Given: 319

Default sure

I think you will be ok, the continuos foam is the best solution, but you go with what will work for you. You only need 1-1/2 of bearing for joists anyway. You could cut the 2x4s in half and reduce the footprint.
Make sure you run the foam up the side wall also, any exposed concrete or blocks have less than 1 r-value.
Just extend the plywood over the foam areas, your going to be fine.

__________________

Just My
Made in the

inspectorD is offline  
 
Reply With Quote Quick reply to this message
Old 01-09-2010, 08:27 PM  
GBR
Senior Member
 
Join Date: Mar 2009
Posts: 337
Liked 18 Times on 17 Posts
Likes Given: 9

Default

I suggest checking with your local B.D. on conditioned crawl spaces, if you foam the floor and walls. You may need an air exchange to meet code requirements, possibly fire covering on the foam. Or vent it and insulate the plumbing and floor: BSI-009: New Light In Crawlspaces —

Be safe, Gary



__________________
GBR is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

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


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Garage Conversion-Flooring cibula11 Framing and Foundation 4 11-27-2009 11:53 AM
Installing OSB subfloor in garage attic GatorJoe Flooring 4 11-22-2009 12:29 PM
Progess on my garage un-conversion the spindoctor General Home Improvement Discussion 4 05-19-2008 08:42 AM
Wall mount toilet conversion Brian1371 Plumbing Forum 1 08-20-2007 08:16 PM
Garage conversion shan2themax Framing and Foundation 1 06-27-2007 10:04 PM

Newest Threads

LATEST SPONSOR DEALS