"Yes Isaac, I am using Wrightsoft.
Thanks"
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Robert DV
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Robert DV's Groups
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Best Practices (Resident…
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Air Conditioning Contrac…
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Trainers and Mentors
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Wrightsoft - Manual J / …
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Building Performance Ins…
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Robert DV's Page
Latest Activity
Robert DV replied to Robert DV's discussion Manual J & Attic calculations in the group Air Conditioning Contractors of America
Isaac Savage replied to Robert DV's discussion Manual J & Attic calculations in the group Air Conditioning Contractors of America"Yes. It does. Which software are you using to model your projects? If you're using RightSuite (aka Wrightsoft) I can give you some guidance."
Robert DV joined Sean Lintow Sr's group
Best Practices (Residential)
Best Building, Retrofitting, or even Auditing Practices - what are they, what should change, what needs to find it's way to the dust bin of history?See More
Robert DV replied to Robert DV's discussion Attic insulation vs. Insulated roof deck in the group Wrightsoft - Manual J / Manual D"Thanks for the information, I'll start running a few models and see what happens.
"
Brady Mills replied to Robert DV's discussion Attic insulation vs. Insulated roof deck in the group Wrightsoft - Manual J / Manual D"In addition to Isaac's response below, if you're insulating the roof deck and encapsulating the attic, be sure to model the ductwork as being within building envelope. This will reduce energy losses through the ducts. "
Isaac Savage replied to Robert DV's discussion Attic insulation vs. Insulated roof deck in the group Wrightsoft - Manual J / Manual D"The best way to determine what RSU does with scenarios like this is to do it both ways, then compare the reports to each other. The "component constructions" report (found in the Load section) will show you the gains losses attributed to…"
Emily Rogers replied to Robert DV's discussion Manual J & Attic calculations in the group Air Conditioning Contractors of America"Hi Robert,
I checked with our technical department here and they believe Table 4A would be the one used for an insulated roof.
Hope this helps."
Robert DV added a discussion to the group Wrightsoft - Manual J / Manual D
Attic insulation vs. Insulated roof deck
Can anyone tell me how Wrtightsoft treat a a insulated roof deck compared to a insulated flat attic.See More
Robert DV added a discussion to the group Air Conditioning Contractors of America
Manual J & Attic calculations
Can anyone tell me how / if Manual J differentiates between attic floor insulation and insulated roof decks?See More
Robert DV joined Emily Rogers's groupAir Conditioning Contractors of America
ACCA is a non-profit association serving more than 60,000 professionals and 4,000 businesses in the HVACR community, working together to promote professional contracting, energy efficiency, and healthy, comfortable indoor environments.See More
Robert DV replied to Caleb Simon's discussion Spray Foam and 2009 IRC codes? Your interpretation?"Caleb,
The E-84 only test has was removed from the IRC between the 2003 & 2006 code cycle. The exceptions you are speaking of are for THERMAL barriers not ignition! You need an ignition barrier unless the specific foam you are using…"
Robert DV replied to Caleb Simon's discussion Spray Foam and 2009 IRC codes? Your interpretation?"Cory is right, watch out for thermal barrier requirements as well. In it's simplest form if you can walk up to it on any given day it will require a thermal barrier. if it is harder to get to you will need an ignition barrier. …"
Robert DV joined Tom White's group
Trainers and Mentors
Share your experience with different training and mentoring methods. Learn about new training tools, certifications and training programs.See More
Robert DV commented on Chris Kaiser's blog post Why the incandescent deserves its death"Thanks fmrubinstein. Hard for me to imagine that though considering the energy it takes to make ceramics and most retrofit lamps have a ceramic base. Not to mention the copper for the circuitry and the additional glass. Still not…"
Robert DV commented on Chris Kaiser's blog post Why the incandescent deserves its death"Has anyone seen a LCA comparing an incandescent lamp to a CFL? What is the embodied energy of a CFL?"
Profile Information
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Comment Wall (1 comment)
- At 8:28pm on March 2, 2011,
Diane Chojnowski said… Hi Robert,
Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!
Don't forget to upload your profile photo. And add your location on our Member Map!
Thanks!
Diane, HEP Moderator
Home Energy Pros
Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy, under the American Recovery and Reinvestment Act) and brought to you in partnership with Home Energy magazine.
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