David Willson
  • Male
  • Sebastopol, CA
  • United States
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David Willson's Page

Profile Information

Company
Advanced Home Performance
Professional Certification
California Contractors License: B725562, HERS II: CC 2005423, BPI: 5004966
Website URL
http://Advanced-HP.com
Facebook Page
http://www.facebook.com/pages/Advanced-Home-Performance/33482466021...
LinkedIn Profile
http://www.linkedin.com/in/davidwi

David Willson's Blog

Willowside Rd., Day 14

Posted on April 26, 2011 at 11:30pm 4 Comments

John and Jane Doe's report is basically written. I have a template that I use that has been slowly built and improved over the past projects. It's a fine start but still requires a fair amount of custom writing, since each house has enough unique issues that need to be addressed.  There's report software out there such as Recurve's, EAI, or BizEE, but none have that personal touch that comes from a written report.  So here's some items from the report:





Target Infiltration: 0.25… Continue

Willowside Rd., Day 10, part 2

Posted on April 25, 2011 at 11:30pm 0 Comments

OK, I'm back from getting the dimensions of Doe's house, enter all the information into EnergyPro, and do an initial calculation. It looks like the house as it is has a HERS of 147, which means that the model predicts that it will use about one and a half times as much energy as a 'reference home', which is this exact same home if it was built to today's energy code requirements and has by definition a HERS of 100. 147 is not too bad but way above what we want. Let's see if we can get it below… Continue

Willowside Rd., Day 10

Posted on April 24, 2011 at 11:30pm 0 Comments

Well, it's taking a bit longer to get to John Doe's report than I'd expected and I've one molar less than a few days ago and a big hole in my jaw.  But, here we are.



I use EnergyPro because I learned it some years ago and I'm familiar with it. Plus, it's the one that's accepted by EUC (Energy Upgrade California), which I plan on applying for this project. Looking over the audit form, everything looks good. We should be able to easily improve Doe's house enough to get a couple of… Continue

Willowside Rd., Day 7

Posted on April 23, 2011 at 11:30pm 0 Comments

Note: the following is not a comprehensive listing of all the details involved in a full audit.  It's meant to be a general description of the process so please don't think that you can read this and do one yourself.  Your and the homeowners' safety requires a full Building Performance training, at a minimum.

 



John and Jane are delightful. Pretty… Continue

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Brad Cook replied to David Butler's discussion How would you insulate this roof?
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Bill Spikowski replied to David Butler's discussion How would you insulate this roof?
"In an earlier response, I noted that we COULD haul drinking water and use the water we collect off…"
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Bill Spikowski replied to David Butler's discussion How would you insulate this roof?
"As to the elevations on the cupola – the existing windows up there might survive adding…"
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Bill Spikowski replied to David Butler's discussion How would you insulate this roof?
"The purlins are 1 3/4" thick. I believe the top chord of the trusses are 10" deep (but…"
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Bill Spikowski replied to David Butler's discussion How would you insulate this roof?
"The cupola windows are the only place there would be a problem if 4" of foam were added above…"
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Bill Spikowski replied to David Butler's discussion How would you insulate this roof?
"The purlins are 1 3/4" thick. I don’t know about the fire dangers of PIC or other foams.…"
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