Old House Insulation

Reply

  #1  
Old 06-03-19, 08:28 PM
Member
Thread Starter
Join Date: Jun 2019
Location: Canada
Posts: 1
Old House Insulation

I have a 100 year old house; no insulation; no soffit ventilation; the attic has blow in insulation and the roof as 4 vents; 3 in the warmer south side and 1 on the north side. The house is 1 1/4 storey; part of the wall in the 2nd floor is the ceiling. That part is about 5' with a 12/12 pitch until it meets the ceiling.

After having a bathroom renovated; the contractor used pink 2x4 insulation in the 2x4 walls and part ceiling/wall. I do not believe he used baffles for venting as he never deepened the 2x4 wall to allow for the baffle/insulation

I have recently demo'd and insulated a small hobby room with that approach for the ceiling (no baffle)

I have started to demo my bedroom and it was pointed out that I should install a baffle; I am in the process of doing that. In hobby room case I deepened the wall to 2x6 to allow for 2x6 insulation. In this case I'll have to deepen the ceiling to allow for the baffle and 2x4 insulation.

My question is; do I have to revisit my old project and install baffles in the hobby room? In an old house with little to no soffit ventilation. Are there any options I can look at before I tear again into my hobby room wall/ceiling to install baffles? If I don't do this am I kicking the crap out of my roof since the roxul is touching the roof?

Is there something about ventilation and old houses that I am not clear on?
 
Sponsored Links
  #2  
Old 06-04-19, 04:15 AM
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 20,374
Upvotes Received: 141
Baffles are only used in roofs. Baffles are only used when there is air movement between soffit vents and the attic vents. So, if you have a roof area that's not ventilated or if you don't have soffit vents then you don't need baffles.
 
joecaption voted this post as helpful.
  #3  
Old 06-04-19, 08:50 AM
Member
Join Date: Oct 2008
Location: New England
Posts: 10,353
Upvotes Received: 16
But you also don't want the fiberglass insulation in contact with a cold roof. Sorry, just jumping in.

Bud
 
Reply

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


Thread Tools
Search this Thread
Display Modes