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

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 03-23-2012, 01:37 PM   #1
Member
 
Join Date: Mar 2012
Location: Chicagoland, IL
Posts: 30
Rewards Points: 25
Default

Blown in Wall Insulation


Does the forum have any feedback on blowing in insulation into walls? I’ve received feedback from “it’s great and really helps” to “it’s useless as your home should have existing insulation in the walls and there’s no way enough insulation can be blown in that will make a difference.”

My house is in Chicagoland, IL, was built in 1975 and has vinyl siding

I am exploring blowing in insulation for the master bedroom and the baby’s room. the walls are exterior facing and they will drill a row(s) of 2" holes that are spaced apart every 16 inches, blow in cellulose insulation under pressure to fill each cavity, plug holes and apply one coat of compound.

Does anyone have any positive or negative feedback on blowing it into the walls?

majch is offline   Reply With Quote
Old 03-23-2012, 01:50 PM   #2
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 6,706
Rewards Points: 2,686
Default

Blown in Wall Insulation


I don't know who said it is worthless but they are plumb wrong if they did.

Are you sure that you don't have any insulation in there?

Windows on Wash is offline   Reply With Quote
Old 03-23-2012, 01:59 PM   #3
Member
 
Join Date: Mar 2012
Location: Chicagoland, IL
Posts: 30
Rewards Points: 25
Default

Blown in Wall Insulation


I don't know how to tell if there's insulation in there? The walls are drywalled and we've only lived there 2 yrs.
majch is offline   Reply With Quote
Old 03-23-2012, 02:22 PM   #4
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 6,706
Rewards Points: 2,686
Default

Blown in Wall Insulation


You will need to identify that first.
Windows on Wash is offline   Reply With Quote
Old 03-23-2012, 03:20 PM   #5
Civil Engineer
 
Join Date: Mar 2009
Location: Boston
Posts: 4,254
Rewards Points: 2,086
Default

Blown in Wall Insulation


Windows is spot on, of course adding insulation to an uninsulated wall will help with heating costs immensely. I had insulation blown into my house about four years ago, it made a +6 degree difference in the internal temperature of the house (we heat with wood), going from about 60-62 degrees to 68 degrees. Hugely more comfortable, same amount of wood burned.

Now how to tell if you have insulation, you need to drill a few small holes through the drywall inside and look inside. You may have fiberglass, rock wool, cellulose, vermiculite, or nothing. I don't know of any way to divine what is in the wall without physically inspecting.
Daniel Holzman is offline   Reply With Quote
Old 03-23-2012, 10:56 PM   #6
Member
 
Join Date: Dec 2008
Location: Fairbanks, AK
Posts: 1,847
Rewards Points: 1,000
Default

Blown in Wall Insulation


Yes to the above, but a caution. The house has been "working", and if you pack in insulation where there was none AND IT IS LEAKY, you may introduce a problem. The problem may be that the exterior sheathing will now get cold and condense. Thus, you will need to ensure that air sealing is done. (PS: I did not come to this conclusion on my own. I read about it on greenbuildingadvisor.com. If you don't trust them, then don't listen.)

jklingel is offline   Reply With Quote
Reply


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
no wall insulation langless28 Insulation 10 01-07-2012 10:23 PM
new wall insulation question s002wjh Building & Construction 9 01-05-2012 01:57 PM
Wall construction for insulation support WillK Building & Construction 3 12-09-2010 01:55 PM
Raising Doorway Height (load bearing?) treefrog Building & Construction 6 02-25-2008 09:11 PM
Marrying a sloping stone wall to a cinder block wall. mrdol Landscaping & Lawn Care 1 11-09-2007 04:08 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.