Go Back  DoItYourself.com Community Forums > Exterior Improvement Center > Exterior Paneling and All Exterior Sidings
Reload this Page >

Replacing Siding, is this a good time to add insulation to my walls?

Replacing Siding, is this a good time to add insulation to my walls?

Reply

  #1  
Old 01-29-14, 07:40 PM
B
Member
Thread Starter
Join Date: Jan 2014
Location: USA
Posts: 1
Received 0 Votes on 0 Posts
Smile Replacing Siding, is this a good time to add insulation to my walls?

I'm thinking of replacing the vinyl siding of my home or just taking it down to put in insulation in my interior walls so... I have a home thats ovwer 100 years old and needless to say it has no insulation on the outside walls between the plaster and lathe and original wood siding. My question is instead of punching holes in every gap and blowing insualtion in where I have to worry about it compacting at the bottom and having no sort of vapor barrier would it be better to just take the siding down, take off the original wood siding then install insulation then cover back up with OSB, then foam then housewrap(not necessary if not exposed to rain etc. in my opinion but im no contractor) and then my vinyl siding? And Yes I do know for sure that the vinyl (which was already put up when I bough the home) has no sort of insulation behind it.

P.S. Iprefer fiberglass insualtion over cellulose/blown in insulation

so if this is confusing anyone this is how I see my layers of outside walls from the inside when I've taken out section to remove old wiring etc.
Inside = plaster then lathe, then no insulation between studs, then original wood siding with gaps in areas where Ican see vinyl siding and light from outside

What should I do
 
Sponsored Links
  #2  
Old 01-29-14, 08:32 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 26,197
Received 714 Votes on 661 Posts
This sounds like a lot of work and will be a major undertaking, so hopefully your 100+ yr old house is worth the effort! You definitely would want to be careful doing the demo not to beat or pry too hard, lest you cause damage to the plaster inside. The same could be said for nailing up the sheathing and siding. Air staplers would drive fasteners in the sheathing without shaking the walls, and hopefully once the sheathing was installed, the walls would be stable enough that they wouldn't shake too bad when you install the roofing nails that will hold the vinyl siding.

If I understand you correctly, you have no exterior sheathing over the studs, just your wood siding. If that's the case, removing the siding would be easy enough and Roxul R-15 (better than fiberglass) would be a good dense insulation for your walls. Adding 7/16" OSB perpendicular to your wall framing would probably be the minimum thickness of sheathing that I'd recommend. In your climate, you really don't want a vapor barrier on the exterior, so I don't know that I'd recommend adding additional foam insulation, but some have added it with no problems. Perhaps Bud will be along soon and can give you some good recommendations in that regard.

As far as your windows and doors are concerned, adding the OSB and foam (potentially) can cause problems with your wall thickness. Windows and doors would have to be jamb extended so that the trim could lay on the new surface of the sheathing (+ foam?). If you add foam and can tape the seams with a compatible tape (like Dow Weathermate construction tape), it will be your WRB and housewrap is not needed. If you skip the foam, you MUST use a housewrap behind the vinyl siding.

Once you remove the old siding, you may also find that you could upgrade some of the electrical in those exterior walls. If you have outlets in those exterior walls, try to pay extra attention to insulate well behind the electrical boxes, where the insulation will be very thin. Some guys will stick a bit of foam behind their outlets since foam is thin and has greater a r-value per inch.
 
  #3  
Old 05-12-14, 09:25 PM
1
Member
Join Date: Oct 2011
Location: usa
Posts: 173
Received 0 Votes on 0 Posts
XSleeper, why no insulation barrier in WV? Just curious, no knowledge.

You did have a good point about getting electrical done. Also, any cabling for computers, phone, and tv, while your walls are open.
 
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
 
Ask a Question
Question Title:
Description:
Your question will be posted in: