Will these ideas work in Zone 5a?
Hopefully this questions won't be to all encompassing and broad so that it won't make any sense.
I'm trying to build a home in Southern Connecticut to be as energy-efficient and cost-effective as possible. My Dad is a Carpenter / Contractor so we will be doing it ourselves. He has never done anything "green" or energy efficient before, so I have been researching as much as possible to find the most cost-effective and energy-saving way possible.
What I want to do so far:
Home will be Colonial, Gambrel style roof, 36 X 30, no garage.
Basement will be concrete forms, floor poured over 4" XPS foam. Will seal basement walls with Spray insulation, 2 - 4".
Framing walls will be double 2 X 4 stud, spray insulation inside wall, minimum 2 inches to form vapor barrier, rest will be filled with cellulose. Wall thickness will be 12 inches, should result in a R value of near 40.
Roof thickness will follow the same values as walls, utilizing gambrel roof style to save on Lumber and materials.
Exterior siding will be vinyl, due to cost. Housewrap will not be vapor barrier due to it existing inside the home sheathing.
Hoping to accomplish heating and cooling with a mini split system with upstairs and downstairs units. I think I will also need a HRV due to the house envelope being very tight.
Now for the questions, is anything im doing totally wrong? Is there a cheaper, more effective way to do this? I think ive addressed most everything I can think of in ways that I can handle, and from browsing other projects that have been done on the site.
Thanks in advance
Posted Jul 26, 2011 12:43 PM ET
Edited Jul 26, 2011 1:43 PM ET
Other Questions in Plans Review
Is it advisable to use nail base insulation panels over a roof insulated with closed cell spray foam?