Does anyone else just see a lawsuit when they watch this video?

http://www.trustedhomeservices.com/eshield/video.asp

Views: 4415

Reply to This

Replies to This Discussion

Unbelievable. With all their money you'd think they would buy a clue.

That is pretty incredible.If they have the kind of air leakage into the attic implied by their ice dam problems I expect condensation and associated issues.

It sounds like Costco isn't getting top grades for this service, even from friends: http://addictedtocostco.com/2008/10/07/have-you-used-costco-service...

Does anybody know how much this job may have cost-installed?

I want to know how they got inside Joe Lstiburek's attic.

LOL, the only thing joe would let these guys touching his house is the door knob to get out the front door!

They make a curious claim about "Almost all of the energy lost in your home is through emission (radiant heat transfer).".. as opposed to convection and conduction.  Seems a bit over the top. 

 

http://www.trustedhomeservices.com/eshield/energy-barrier.asp

 

 Maybe if you lived in a well sealed glass house....

 

Kevin

Even better is that he is claiming a 25% reduction in the home's energy bill - not heating bill, but the energy bill. The sad thing is people still buy these kind of claims.

Has any credible building science study been conducted on the efficacy of radiant barriers in heating climates. I'm sure they work great in Florida to reduce cooling loads but to claim they work during the heating season in New England, it's impossible. 

According to the U.S. Department of Energy’s Energy Efficiency and Renewable Energy Clearinghouse, “Two field tests, one in Minnesota and one in Canada, both found that a radiant barrier placed over R-19 attic floor insulation (which is less than half the DOE minimum recommendation for those climates), found that the radiant barrier contributed to less than a 1% reduction in energy consumption for heating and cooling.” (sorry, couldn't find the actual study link)

And that was with R19. Any savings at all disappears when you consider most attics in a cold climate will have a higher R-value than R-19 and if they don't it will be much more cost effective to install an additional R30 blown fiberglass or cellulose.

Even if you were chasing these meager savings, a radiant barrier on the cold side of the insulation acts as a vapor barrier in the wrong location. Even if your using the perforated stuff you can have condensation freeze in the perforations and then wreak havoc on your insulation and possibly cause a huge mold problem.

The Lawrence Berkeley study is actually on cool roofs which is applying a reflective coating to the top side of roofs to reflect solar load. Lining an attic with tin foil is completely different and making the claim that is works in heating mode I think is outlandish and I won't buy it w/o some sound building science to back it up.

Here is the DOE Radiant Barrier Article link:

http://www.energysavers.gov/your_home/insulation_airsealing/index.c...

This is for the Costco people...

If you want it done right, Call me.

Wayne

Radiant insulation systems.

www.radiantinsulsystems.com

Attachments:

RSS

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Steven Lewis replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"It looks better on paper than in real life applications.  Both Amana and Lennox came out with…"
15 hours ago
Dennis Heidner replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"Rinnai has application note on how to use their tankless hot water heater with a Rinnai water to…"
yesterday
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…"
yesterday
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…"
yesterday
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…"
yesterday
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…"
yesterday
Michael Dunseith posted photos
Saturday
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 …"
Saturday

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service