Insulating Strategy For Exterior Wall In Old Home - Insulation - Page 2 - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Insulation

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

Like Tree4Likes
Reply
Thread Tools
Display Modes
Old 12-31-2019, 12:51 PM   #16
Member
 
Join Date: Dec 2019
Posts: 30
Rewards Points: 60
Default

Re: insulating strategy for exterior wall in old home


Quote:
Originally Posted by Porsche986S View Post
The first thing I would do is remove a few pieces of vinyl siding to determine what is currently in place . Is there sheet foam installed ? Is there house wrap installed ? As already stated it is soooo much easier to install insulation from the outside because you are not disturbing/ripping out interior sheet rock or plaster .
I pulled a piece of siding off and found white sheets of thin (approx 1/4") insulation sheets. They overlapped and I didn't get to the bottom of them. I probably should dig further down? The nails holding them on were 3" long, and based on how easily they pulled out, the were not in much lumber.

Was it common to insulate in this way when putting vinyl siding on a very old house?
Attached Thumbnails
insulating strategy for exterior wall in old home-20191231_121814.jpg   insulating strategy for exterior wall in old home-20191231_121827.jpg   insulating strategy for exterior wall in old home-20191231_121853.jpg  
brian85 is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-31-2019, 01:07 PM   #17
APA
Member
 
Join Date: Jul 2018
Posts: 147
Rewards Points: 294
Default

Re: insulating strategy for exterior wall in old home


Quote:
Originally Posted by brian85 View Post
I pulled a piece of siding off and found white sheets of thin (approx 1/4") insulation sheets. They overlapped and I didn't get to the bottom of them. I probably should dig further down? The nails holding them on were 3" long, and based on how easily they pulled out, the were not in much lumber.

Was it common to insulate in this way when putting vinyl siding on a very old house?

I would just go for the attic. There are too many unknowns in those walls. 110 years says a lot.
APA is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-31-2019, 01:09 PM   #18
APA
Member
 
Join Date: Jul 2018
Posts: 147
Rewards Points: 294
Default

Re: insulating strategy for exterior wall in old home


Insulate the attic and install a coal stove for winter. You can make it as hot or cold in that house as you want.
APA is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-31-2019, 01:15 PM   #19
APA
Member
 
Join Date: Jul 2018
Posts: 147
Rewards Points: 294
Default

Re: insulating strategy for exterior wall in old home


Quote:
Originally Posted by brian85 View Post
I pulled a piece of siding off and found white sheets of thin (approx 1/4") insulation sheets. They overlapped and I didn't get to the bottom of them. I probably should dig further down? The nails holding them on were 3" long, and based on how easily they pulled out, the were not in much lumber.

Was it common to insulate in this way when putting vinyl siding on a very old house?

I would just go for the attic. There are too many unknowns in those walls. 110 years says a lot.


I just don't think tearing into walls during a Minnesota winter is a good idea. Wait til spring.
APA is offline   Reply With Quote
Old 12-31-2019, 01:17 PM   #20
Member
 
Join Date: Dec 2019
Posts: 30
Rewards Points: 60
Default

Re: insulating strategy for exterior wall in old home


Quote:
Originally Posted by APA View Post
Insulate the attic and install a coal stove for winter. You can make it as hot or cold in that house as you want.
Thanks APA! Just curious: Do you generally believe that insulating the walls of an old house isn't worth it? Or are you saying that since there's some insulation on the exterior of the walls, then insulating the walls further isn't worth it?
brian85 is online now   Reply With Quote
Old 12-31-2019, 01:26 PM   #21
APA
Member
 
Join Date: Jul 2018
Posts: 147
Rewards Points: 294
Default

Re: insulating strategy for exterior wall in old home


Quote:
Originally Posted by brian85 View Post
Thanks APA! Just curious: Do you generally believe that insulating the walls of an old house isn't worth it? Or are you saying that since there's some insulation on the exterior of the walls, then insulating the walls further isn't worth it?

I was being a little facetious there. When I was a kid, we would build coal stove fires so hot that the stovepipe would glow orange and the grates would melt. I am not a professional. I just have always read that the attic is where you will see the most benefit. I have also helped in enough old houses to know that digging into the walls is looking for trouble. I also know that the house has lasted this long that waiting several more months for better weather is the best course of action than ripping into a house in cold weather. Use these months to get your ducks in a row and start the work in spring...unless there is something dangerous going on that needs immediate attention.
APA is offline   Reply With Quote
Old 12-31-2019, 07:13 PM   #22
Member
 
Join Date: Jan 2018
Posts: 609
Rewards Points: 1,172
Default

Re: insulating strategy for exterior wall in old home


Quote:
Originally Posted by brian85 View Post
I pulled a piece of siding off and found white sheets of thin (approx 1/4") insulation sheets. They overlapped and I didn't get to the bottom of them. I probably should dig further down? The nails holding them on were 3" long, and based on how easily they pulled out, the were not in much lumber.

Was it common to insulate in this way when putting vinyl siding on a very old house?
Yes, pretty common to find some sort of foam insulation under vinyl siding. Hard to say for sure, but I wonder if that is insulated vinyl siding. They still sell that at Menards https://www.menards.com/main/buildin...943-c-5838.htm Nowadays they use "fanfold" which is a 1/4" foam underlayment. Pretty limited insulation value, but it does serve as a pad to make the vinyl go on easier. There could well be a layer of old wood siding under there too.


Kind of moot really, if your house is drafty and you know from looking from the inside that the stud cavities are empty, you ought to insulate them. Again, it is done all the time. I spent 10 years remodeling old houses in Duluth, and it was fairly rare to find one that WASN'T dense packed with cellulose at some time. Very common practice. Whether you do it piecemeal from the inside or just spend the money and get it over with from the outside is up to you.
Marson is offline   Reply With Quote
Old 12-31-2019, 09:19 PM   #23
APA
Member
 
Join Date: Jul 2018
Posts: 147
Rewards Points: 294
Default

Re: insulating strategy for exterior wall in old home


Quote:
Originally Posted by Marson View Post
Yes, pretty common to find some sort of foam insulation under vinyl siding. Hard to say for sure, but I wonder if that is insulated vinyl siding. They still sell that at Menards https://www.menards.com/main/buildin...943-c-5838.htm Nowadays they use "fanfold" which is a 1/4" foam underlayment. Pretty limited insulation value, but it does serve as a pad to make the vinyl go on easier. There could well be a layer of old wood siding under there too.


Kind of moot really, if your house is drafty and you know from looking from the inside that the stud cavities are empty, you ought to insulate them. Again, it is done all the time. I spent 10 years remodeling old houses in Duluth, and it was fairly rare to find one that WASN'T dense packed with cellulose at some time. Very common practice. Whether you do it piecemeal from the inside or just spend the money and get it over with from the outside is up to you.



I agree about just paying to have it done all at once. I piecemealed our attic project and the house has been torn up to one degree or another for 3 years and it still isn't finished. Pros will have it done and done right before you can even rent the machine. Just get a few quotes...
APA is offline   Reply With Quote
Old 03-25-2020, 09:28 PM   #24
Member
 
Join Date: Dec 2019
Posts: 30
Rewards Points: 60
Default

Re: insulating strategy for exterior wall in old home


There's one room in the house that didn't have any plaster or drywall up - just some old insulation. I'm planning to install R15 fiberglass insulation into its 2x4 wall. There a black paper lining the outside of each stud cavity. Reminds me of tar paper. Behind this black paper are horizontal boards that are 3-4 inches wide. I'm not sure if they used to be the exterior siding or if they were just the foundation for the siding. As I noted earlier, currently there's vinyl siding, and I'm not sure what's underneath it (or what the original siding was).
So here's my question: should I be installing anything on the exterior side of the fiberglass insulation? For example, I could put some Tyvek wrap in each 15" cavity.
Attached Thumbnails
insulating strategy for exterior wall in old home-2020-03-25-21_26_01-photo-google-photos.png  
brian85 is online now   Reply With Quote
Old 03-26-2020, 01:24 PM   #25
Member
 
Join Date: Dec 2019
Posts: 30
Rewards Points: 60
Default

Re: insulating strategy for exterior wall in old home


ah, just found this related thread

https://www.diychatroom.com/f103/ins...-walls-168397/
brian85 is online now   Reply With Quote
Old Yesterday, 09:44 PM   #26
Member
 
Missouri Bound's Avatar
 
Join Date: Apr 2011
Location: Almost Arkansas
Posts: 3,128
Rewards Points: 2,728
Default

Re: insulating strategy for exterior wall in old home


If you intend to rip off the plaster and expose the studs there is always foam.
It seals everything up and eliminates the need for a vapor barrier.
Although many think the attic is where all the heat goes it amounts to only 30 to 40% of heat loss. Most heat is lost through walls and poorly insulated windows.
The attic zone is a buffered zone with an tempered air space when ceilings are not insulated.
Exterior walls get the brunt of the wind and thermal exposure. If you intend to remove wall covering there is always foam. But the "rock wool" type of insulation is also very good since you can easily cut it to fit exactly. Paper or foil backed insulation is now as easily to work with if you have irregular stud spacing.
__________________
Do you want it your way or the right way?
Missouri Bound is online now   Reply With Quote
Unread Today, 05:57 PM   #27
Member
 
Join Date: Jan 2019
Posts: 682
Rewards Points: 1,364
Default

Re: insulating strategy for exterior wall in old home


You need to have insulation blown into the walls. The choice becomes making the hole on the outside or the inside of the house. With vinyl siding I would make the holes on the inside of the house. Be sure that the quote includes plugging the holes properly by the contractor and check out at least one other job that his people have done to see the level of workmanship.

Adding insulated siding adds negligible R-value and is a waste of money with a payback of more than a century.
__________________
“In a world of climate change, the rich will find the world to be more polluted, more uncomfortable, colorless, and a bleaker world. The poor will die”. Kirk R. Smith
Calson is online now   Reply With Quote
Unread Today, 06:24 PM   #28
Member
 
Join Date: Dec 2019
Posts: 30
Rewards Points: 60
Default

Re: insulating strategy for exterior wall in old home


Quote:
Originally Posted by Calson View Post
You need to have insulation blown into the walls. The choice becomes making the hole on the outside or the inside of the house. With vinyl siding I would make the holes on the inside of the house. Be sure that the quote includes plugging the holes properly by the contractor and check out at least one other job that his people have done to see the level of workmanship.

Adding insulated siding adds negligible R-value and is a waste of money with a payback of more than a century.
Thanks Carlson. I'm pretty set on putting fiberglass into this room since I have interior access to the studs. Would you advise to put some sort of barrier like Tyvek on the exterior side of the stud cavity? Or just throw the fiberglass up against the old wooden siding?
brian85 is online now   Reply With Quote
Unread Today, 06:37 PM   #29
Member
 
Join Date: Jan 2019
Posts: 682
Rewards Points: 1,364
Default

Re: insulating strategy for exterior wall in old home


This is not a simple question as there can be problems with mold if moisture is trapped inside the walls. If the drywall is removed from the studs then adding two-part closed cell foam is a good way to go as it seals air leaks and has double the effective R-value of any kind of standard insulation. An inch of foam has about the same insulating effectiveness as 3 inches of fiberglass insulation in actual practice.

Important to understand that the times specified for re-entering a space where the foam has been applied assume a certain number of complete air changes in the space (with the outside air brought in and the inside contaminated air exhausted outside of the house along with the very harmful fumes. A manufacturer may state that a space is safe to occupy 4 hours after spraying but in reality when you run the numbers it is going to me more than 24 hours at a bare minimum.

With blown in insulation at least two holes per stud bay need to be made in the walls so you can see that a lot of holes need to be made and then patched.

The EPA produces an excellent guide to sealing and insulating a house and it is not biased toward any particular approach. Don't overlook the benefits from sealing any air gaps in the attic around light fixtures and ceiling fans and air vents and other ceiling penetrations.
__________________
“In a world of climate change, the rich will find the world to be more polluted, more uncomfortable, colorless, and a bleaker world. The poor will die”. Kirk R. Smith

Last edited by Calson; Today at 06:43 PM.
Calson is online now   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Thread Tools
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