DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Insulation and Radiant Barriers > Insulating/moisture above living room




Help Support House Repair Talk by donating using the link above.
Reply
 
Thread Tools Search this Thread
Old 12-30-2016, 10:25 AM  
Agduod22
Established Member
Join Date: Dec 2016
Posts: 5
Default Insulating/moisture above living room

Hey all, new home buyer, so I am new to this forum. Sorry if I missed a similar article, but I am stumped. Half of my living room is under other living space like the master bedroom, the other half is not (exposed to outside air). A steel beam supports the floor above one side below living space, one side not. I will be insulating above the exposed ceiling with fiberglass, and adding a Durovent rafter vent between sheathing and insulation. My question is, what is the best way to insulate so the other side doesn't get cold air in the ceiling, and how to keep the air flowing as to not allow moisture to build, and mold to set in. I am thinking about putting foam board as a block from side to side with some holes in the board as to allow a bit of air to flow, but not to much.

Sorry, it's confusing, but any help would be great. Thanks


Agduod22 is offline  
 
Reply With Quote
Old 12-30-2016, 12:48 PM  
Gary
Senior Member
Join Date: Oct 2005
Posts: 238
Liked 160 Times on 98 Posts
Likes Given: 11

Default

I would think blocking the gap with unfaced fiberglass would work if I'm understanding the situation right, but I'm not sure I am. Do you have photos of the area you're talking about?


Gary is offline  
 
Reply With Quote
Old 12-30-2016, 12:55 PM  
nealtw
Contractor retired
 
nealtw's Avatar
Join Date: Nov 2010
Location: Upper Fraser Valley, British Columbia
Posts: 23,428
Liked 2943 Times on 2579 Posts
Likes Given: 4844

Default

If I have it right, you have a transition from floor to attic, it should have solid blocking with out any air movement.
nealtw is offline  
 
Reply With Quote
Old 12-31-2016, 06:54 AM  
Agduod22
Established Member
Join Date: Dec 2016
Posts: 5
Default

Thanks for the quick reply.

I have done a little more research and you're right, I will definitely seal it off between sides. The ceiling joists above the side without living space above is only 5.5" (2x6's). It is unvented, and that same side is only about 180 square feet..maybe I'm worrying to much about it?

The picture shows the living room. The right side of the beam is below the master bedroom..left side is below walk out balcony that is off the bedroom (still has ceiling up in picture)
Click image for larger version

Name:	image.jpg
Views:	77
Size:	48.9 KB
ID:	13169  
Agduod22 is offline  
 
Reply With Quote
Old 01-01-2017, 11:01 PM  
nealtw
Contractor retired
 
nealtw's Avatar
Join Date: Nov 2010
Location: Upper Fraser Valley, British Columbia
Posts: 23,428
Liked 2943 Times on 2579 Posts
Likes Given: 4844

Default

So above the beam all the space between floor joists should be filled with 2x6 sealed and insulated.
The deck today would be built a little different. It would have been built with the floor joists and then 2x4s on the flat going the other way for venting and some playing with the trim around the deck to look good but also allow air movement above the insulation. We also build them so they have a six inch step down from the door upstairs. Or in a house like yours we would raise the door and have a 6" step over.
nealtw is offline  
 
Reply With Quote
Old 01-03-2017, 06:50 AM  
Agduod22
Established Member
Join Date: Dec 2016
Posts: 5
Default

Thanks for the input. Sounds like the best way to do it is to NOT leave space between the insulation and the sheathing..I'm just worried about condensation, moisture, mold, etc. if I had room above the sheathing, I'd lay down some foam board but unfortunately I don't.
Agduod22 is offline  
 
Reply With Quote
Old 01-03-2017, 12:40 PM  
nealtw
Contractor retired
 
nealtw's Avatar
Join Date: Nov 2010
Location: Upper Fraser Valley, British Columbia
Posts: 23,428
Liked 2943 Times on 2579 Posts
Likes Given: 4844

Default

The real fix would be to lower the ceiling under the deck to allow for everything you need. But if it has been that way for a long time with out a problem, may be you should leave well enough alone.
nealtw is offline  
 
Reply With Quote
Old 01-04-2017, 08:08 AM  
Agduod22
Established Member
Join Date: Dec 2016
Posts: 5
Default

I thought about lowering the ceiling, but I'd have to lower it quite a bit, and with it being a living room, I'd rather not. There isn't any mold or wood rot on the sheathing or the joists, which lead me to think it will be ok. The previous owners had blown in insulation with paneling for the ceiling, no moisture barrier..
Agduod22 is offline  
 
Reply With Quote
Old 01-04-2017, 08:14 AM  
nealtw
Contractor retired
 
nealtw's Avatar
Join Date: Nov 2010
Location: Upper Fraser Valley, British Columbia
Posts: 23,428
Liked 2943 Times on 2579 Posts
Likes Given: 4844

Default

What is the waterproofing on the deck above?
nealtw is offline  
 
Reply With Quote
Old 01-05-2017, 09:44 AM  
Agduod22
Established Member
Join Date: Dec 2016
Posts: 5
Default

It is tar right now but come spring it is getting replaced, not sure what the contractor will use, I'm waiting to here back from him.


Agduod22 is offline  
 
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Living room furniture cb104 General Chit-Chat 2 06-04-2014 07:25 PM
My living is room is a disaster prodigymytch Decorating and Design 14 11-12-2009 10:27 PM
Living room pics NogaroS4 Decorating and Design 18 07-03-2009 06:10 PM
Remodeling my living room SlipperyTiles45 Decorating and Design 5 04-02-2008 11:41 AM
Wall in living room PAULYBOY Flooring 3 02-25-2006 08:51 AM