Some Perspectives

http://www.walletpop.com/blog/2010/01/06/cash-for-caulkers-poised-to-return/

NorthStar in the News

Featured on KSNW - http://www.ksn.com/news/local/story/New-program-will-help-residents-become-energy/c6wVQTyE3Ums9yX5oTdHxA.cspx

Efficiency Kansas

If you own a home and would like to do some energy efficiency upgrades (but don't want to pay for it out of pocket now), you should check out Efficiency Kansas. (http://efficiencykansas.com/index.html) It's a program set up by the state of Kansas to loan people money through a bank to get their houses tighter, more comfortable & use less energy.

Or you could just call us directly, in that we do energy audits, insulation & air sealing work. Either way.

Recovery Through Retrofit

Some interesting reading for homeowners interested in saving some money on their utilities http://www.whitehouse.gov/blog/going-green-and-saving-you-money/

Wichita Area Parade of Homes

The Parade of Homes in our area starts this weekend (Oct. 10-11) and runs for three straight weekends. No matter where you are in the home buying process, from 'window shopping' to ready to move, now's your chance to go see the best of what's out there.
Check out www.wabahome.com for more info.

Caution Ahead: Brick Veneer & Spray Foam

There are a lot of different ways to build a wall. There's standard 2x4 walls, 2x6 walls, ICFs, SIPs, concrete block and steel stud, to name the major ones. Then, there's what to put on the outside the wall (siding, brick, stone, EIFS, etc.), inside the wall (fiberglass, cellulose, spray foam, etc.), then the interior of the wall (what kind of sheetrock, paint, etc.). All of this is your wall system. Yes, the construction industry considers the wall system - not a living, breathing one - but a system nonetheless.

That said, the specific point of this entry is that caution needs to be used when using spray foam insulation & brick veneer in climate zone 4, which is where Wichita and Kansas City, to name a couple of cities, are located. Why? Well, it comes down to a few things:

• Brick veneer can store huge amounts of water.
• Most housewrap, also called a Weather Resistive Barrier, is very vapor permeable (as in water vapor goes through it very easily)
• The sun will drive water vapor towards the inside of the house, through the housewrap and into the OSB.
• The foam, open or closed cell, has such a low permeability that the water effective stops inside the OSB, as it has nowhere to go until it can evaporate back to the outside.
  

Unsurprisingly, this can lead to structural weakening of the OSB.
So, what to do? The two main things to do involve tweaking common building practices slightly, so that we can make longer lastig structure. Notice I'm not saying don't do spray foam & brick veneer - I'm just saying that I would:

• Use a weather resistive barrier with lower permeability. Permeability is rated in Perms. Standard WRBs are 35 or so. 10 Perms or less will keep enough water vapor out to help minimize the intrusion.
• Change the way you build the veneer, to include more ventiliation. Current practices on residential construction use only weep holes at the bottom of the brick at regular intervals. The research I've seen suggests that creating a more breathable brick veneer will keep moisture in the air moving & not heading in, towards your house.

Thanks to Lucas Hamilton at CertainTeed for doing all the heavily lifting with this. All I did was ask the question & thought I should pass along the information. And, again, this is just for Climate Zone 4 - and there are 6 across the U.S., so ask your builder, insulator, architect, energy auditor, what's recommended for your area.

-Jeff

Video on YouTube

I will get this on our main site soon but here's a link to our latest video - http://www.youtube.com/watch?v=s4J83FB2x_M