Smart Remodeling in MA – High Performance Homes

01/18/12 8:29 pm | Comments (0) | Posted By: SiteOwner

We covered the basics of HVAC in last week’s blog post. This week I want to talk about the building envelope, walls in particular. Ooooooo! Walls! How Exciting!!!

We could get technical and cover four barriers to prevent four wetting potentials and really delve into the science behind an effective building envelope system. What kind of a host would I be to do that to you though? Instead lets talk about some cool stuff that’s happening out there to improve insulating quality as well as air and water permeability. First lets take a close look at what Carter Scott is doing in Massachusetts with Transformations, Inc.

For one, he’s using extra thick walls by doubling up studs and creating 12 inch thick cavities. Within the outer-most stud wall, on the interior side of the exterior plywood sheathing, they’re applying spray-on foam insulation. Not only does this provide the first layer of insulation, it also minimizes air leakage by creating an air barrier, which just so happens to be very important to HVAC systems too! Within the inner-most stud wall, they are filling the remainder of the cavity with high density cellulose to ensure that the walls are “super insulated”. This product not only adds R-Value, it helps minimize air leakage and provides a sound deadening quality to the building envelope.

A super insulated building envelope with properly installed air and water barriers will inevitably lower heating and cooling costs of a home saving you lots of MOOLAHH! Check out some more about the “Zero Energy” homes being built in Massachusetts:

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