DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Insulation (http://www.diychatroom.com/f103/)
-   -   Insulating basement walls (http://www.diychatroom.com/f103/insulating-basement-walls-176339/)

bryanp22 04-01-2013 12:07 AM

Insulating basement walls
 
I'm debating just painting the cinder block walls or framing them. Any thoughts on if my basement will always just be cold unless I insulate? Anyone just paint the cinder block walls in the zone 6 climates and not have a really cold basement?

GBrackins 04-01-2013 07:29 AM

bryan,

would be best to start your own post as questions and comments tend to become confused between two different situations. also you may want to edit your profile to include your location as location determines the best approach to your question

Windows on Wash 04-01-2013 08:26 AM

You can just heat the daylights out of the basement and not insulate. At the end of the day, you will have a warm basement but you are going to pay for it.

The benefit to insulating the basement properly is that you are impacting the state and efficiency of the basement for the life of the structure.

If you are trying to make the basement livable and comfortable, I would suggest that you insulate as mentioned previously. It will be more expensive but it will be a one shot deal and you are done if you do it properly.

bryanp22 04-01-2013 08:41 AM

My house has cinder block walls. If I frame the walls do I need to space them out from the block? Is rigid pink foam best for basements? Any idea on thickness requirement for Wisconsin?

Windows on Wash 04-01-2013 10:40 AM

XPS is best for basement wall because it is moisture insensitive.

In Wisconsin, minimum 1", frame the walls out, and unfaced batt insulation.

Seal up the rim joists while you are in there.

bryanp22 04-01-2013 10:55 AM

Do you still have to put in a moisture barrier between the studs and the cinder block then?

brockmiera 04-01-2013 11:37 AM

Quote:

Originally Posted by bryanp22 (Post 1150185)
Do you still have to put in a moisture barrier between the studs and the cinder block then?

Your foam board serves as a thermal break meaning that is keeps condensation from forming because warm air wont ever get to the cold surface of your basement walls. No additional vapor barrier is needed.

bryanp22 04-01-2013 11:41 AM

So the foam goes between the cinder block wall and the studs and I end up with a continuous layer of foam before I put up the studs? For some reason I was thinking you'd have to use it like normal Fiberglas insulation and it would go in the channel between the studs after the wall is framed.

brockmiera 04-01-2013 11:46 AM

[QUOTE=bryanp22;1150217]So the foam goes between the cinder block wall and the studs and I end up with a continuous layer of foam before I put up the studs?

Thats correct. You will also want to tape the seams foam seal the top and bottom, fire block as necessary, unsulated and air seal the rim joist.

Trucon01 04-03-2013 01:44 PM

1 Attachment(s)
Here's a quick pic of what I'm in the process of if you need a visual.

Gary in WA 04-05-2013 12:09 AM

You would lose a lot of heat by not insulating; http://www.quadlock.com/technical_li...Insulation.pdf

With 1" foamboard (R-5 XPS) only and 70*F in room temp, 84% heat reduction and 81% Relative Humidity.

R-5 + R-13 cavity insulation = 95% heat reduction and safe up to (only) 26% RH in room.

R-10 + R-13 ins. = 97% heat reduction and safe to 36%RH.

Gary

HomeSealed 04-05-2013 09:03 AM

Good advice above. 1.5" Xps is used most often. Depending where you are in Wi, you might be eligible for rebates on that work through the Focus on Energy program ( through WE energies). They subsidize 33% of the work up to $1500 if you meet their guidelines :)

bryanp22 04-05-2013 09:39 AM

I'm in milwaukee area. So you do 1.5 rigid and then rolled in the walls? Do I need to worry about moisture at all with the rolled insulation if I do the 1.5" of rigid foam?

bryanp22 04-05-2013 09:54 AM

Also where can I read requirements of We energies program? I can't seem to find it.

HomeSealed 04-05-2013 05:06 PM

There is always SOME worry about moisture in a basement, but the best methods as described will mitigate those chances substantially. Here is the link to the program: http://www.focusonenergy.com/residential


All times are GMT -5. The time now is 01:46 PM.


Copyright 2003-2014 Escalate Media LP. All Rights Reserved