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Ventilation for Spray Foam retrofit

I have a flat roof home with 3 feet of clearance from attic floor to ceiling. It is 1920 square feet, existing home. The space is unvented,…

Started by Craig Bird in General Forum

3 Dec 15, 2011
Reply by tedkidd

D.I.Y. Services to Homeowners. Do they make sense?

Here is a scenario:   You are a home performance contractor. Sales are down (slightly or significantly). Homeowners in your area just don't…

Started by Patrick Michaelyan in General Forum

9 Dec 9, 2011
Reply by Patrick Michaelyan

Mold on exterior walls

I have been doing a good deal of research into the topic of mold that has grown on exterior walls (and appears to be spreading).   I have h…

Started by Patrick Michaelyan in General Forum

10 Dec 7, 2011
Reply by David Meiland

Energy Upgrade California

Does anyone have a good disclosure about NOT hitting your target on the test out ?

Started by Dave Loperena in General Forum

0 Dec 7, 2011

Measured Home Performance - Print-on-demand Best Practices Guide for Retrofits (California Report)

Everybody,If you work or live in California, Nevada, Arizona, New Mexico (or in parts of other States that have similar climates and constr…

Started by Lew Harriman in Best Practices

0 Dec 6, 2011

Energy Prices Will Only Climb, Says One Brazilian Oil Exec

Oil and gas prices are only due to climb, says Petrobas chief.  And that's OUR opportunity to make homes and commercial buildings more ener…

Started by Melissa Baldridge in General Forum

2 Dec 4, 2011
Reply by Patrick Michaelyan

Blown Cellulose VS Blown Fiberglass in the Attic

As a rater and insulation contractor I personally respect the overall insulation properties of blown cellulose a lot more than blown fiberg…

Started by Isaiah Borel in General Forum

4 Nov 30, 2011
Reply by Patrick Michaelyan

Radiant barrier over blown in insulation

I have seen mold growing under a radiant barrier installed over blown in insulation.  I am looking for any articles, etc.... about this pro…

Started by Rob Wright in General Forum

21 Nov 28, 2011
Reply by Ed Minch

Before and after leakage tests. What to expect.

Your before-test result is 4000 CFM50. After two days of work, you measure a 21% reduction to 3150 CFM 50. Your after-test is checked using…

Started by Silvie Votrubova in General Forum

2 Nov 28, 2011
Reply by Silvie Votrubova

Should home-performance ratings be required on property listings?

Recognizing that this group may be a bit biased, I invite your responses for a survey on whether home-performance ratings should be require…

Started by Leah Thayer in General Forum

10 Nov 26, 2011
Reply by Chris J Folse

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Hal Skinner replied to Hal Skinner's discussion How much heat energy is lost through the floor of a house?
"I found the buildingscience article interesting.  Interesting that they noted the wet bottom…"
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Bud Poll replied to Hal Skinner's discussion How much heat energy is lost through the floor of a house?
"With conduction that ends at the bottom of the joists and convection that is naturally suppressed…"
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Hal Skinner replied to Hal Skinner's discussion How much heat energy is lost through the floor of a house?
"Good morning Bud, Took a quick look at the site and a couple others listed on the Yahoo…"
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Bud Poll replied to Hal Skinner's discussion How much heat energy is lost through the floor of a house?
"Hi Hal, Search "Basecalc basement heat loss".  From memory Canada (nrcan) has/had a…"
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Hal Skinner replied to Hal Skinner's discussion How much heat energy is lost through the floor of a house?
"II just remembered seeing a report by a federal adency, many years ago, that basically said …"
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Alliant Energy's PowerHouse TV: Sealing Leaky Ductwork

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Hal Skinner posted a discussion

How much heat energy is lost through the floor of a house?

I am asking this as I do not recall anyone speaking of any study to this end.  Many comments about…See More
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