Rob Wright
  • Mechanicsburg, PA
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Radiant barrier over blown in insulation
21 Replies

I have seen mold growing under a radiant barrier installed over blown in insulation.  I am looking for any articles, etc.... about this problem to forward to a customer.  Can anyone help?Continue

Started this discussion. Last reply by Ed Minch Nov 28, 2011.

Blown insulation help
7 Replies

 I did an audit last week of a home built in 1992.  The attic insulation looks like a coarse, dark, insulation cellulose.  I haven't run across this type yet and am not sure of the exact name or…Continue

Started this discussion. Last reply by Pat Dundon Sep 2, 2011.

 

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Rob Wright added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Jan 30, 2013
Rob Wright added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
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Cool Machine insulation blower for sale

I'm selling a Cool Machines 1500.  This Machine was purchased last fall.  I used it about 10 times and it's in great shape.  I have accessories included. It is a great machine I used to complete energy improvements after an audit.  Email robjwright66@gmail.com for price and details…See More
Dec 27, 2012
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Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment you have to sell, trade or wish to purchase.Please post the equipment age, serial numbers, condition, warranties and asking price.See More
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Dec 28, 2011
Ed Minch replied to Rob Wright's discussion Radiant barrier over blown in insulation
"Chris This would be easy to test.  Install 1/2 of an RB in an attic, then measure the drywall temperature on each side.  The cooler drywall wins.  Come to think of it, install more insulation in 1/2 and an RB in the other 1/2. Ed Minch"
Nov 28, 2011
Chris Gerstner replied to Rob Wright's discussion Radiant barrier over blown in insulation
"That's the simplest explanation. I like the term of cheapest way to a cool ceiling.  Keep in mind, studies have also shown that a large portion of infrared heat radiates through most types of insulation since they are usually very porous…"
Nov 28, 2011
Ed Minch replied to Rob Wright's discussion Radiant barrier over blown in insulation
"Chris: I think we are in basic agreement.  If you want to cut your bill, you have to cool off your interior drywall ceiling (in summer) so you don't spend so much money air conditioning it.  If you put up a radiant barrier, it will…"
Nov 28, 2011
Chris Gerstner replied to Rob Wright's discussion Radiant barrier over blown in insulation
"Hello Ed, R-19 is pretty low. I have about 70 research papers on Radiant Barriers, most of which from credible sources and research organizations. Most of the papers conclude with many different opinions. The general consensus is that RB's are…"
Nov 28, 2011
Ed Minch replied to Rob Wright's discussion Radiant barrier over blown in insulation
"Chris: Your Fact Sheet states:   "These estimates generally assume R-19 ceiling insulation. Savings would be less for homes with greater levels of insulation." R-19 is an inadequate amount of insulation in most climates -…"
Nov 28, 2011
Chris Gerstner replied to Rob Wright's discussion Radiant barrier over blown in insulation
"Rob,   Here are a few studies I have on our company servers. It has been very difficault for me to find studies pertaining both to an RB on top of insulation and mold development as a result. I would suspect that you could find studies or…"
Nov 28, 2011
Rob Wright replied to Rob Wright's discussion Radiant barrier over blown in insulation
"Robert, I am looking for a study or article or whatever done by an independent source on applying the foil type radiant barrier applied over blown in attic insulation.  One attic i've seen this done in caused moisture to build up on…"
Nov 27, 2011
Hal Skinner replied to Rob Wright's discussion Radiant barrier over blown in insulation
"Hi Tom.  I understand the concern.  Unfortunately, there have been many products out there that have given our industry a black eye over the years.   Here is an example3 of how we perform in cold climates.  This is in Texas where…"
Nov 27, 2011
Thomas Price replied to Rob Wright's discussion Radiant barrier over blown in insulation
"Sorry, Hal, but what I am looking for is some source that backs up what you are saying. I've always read and practiced that the radiant barrier needs at least an inch of air space to be effective.  You claim that it needs to be an integral…"
Nov 27, 2011
Hal Skinner replied to Rob Wright's discussion Radiant barrier over blown in insulation
"The miltary and some of our competitors heard this about our coating.  They applied some to a roof as well as several other coatings.  They took their IR thermometer guns and got readings from all of them, except ours.   Then they…"
Nov 26, 2011
Sean Lintow Sr replied to Rob Wright's discussion Radiant barrier over blown in insulation
"LOL & Amen - that is because most of them are nothing but smoke & mirrors Now Thomas - as for the IR doesn't show anything, the words that come to mind is no $hit Sherlock. When you look in a mirror, do you see the wall…"
Nov 26, 2011
Thomas Price replied to Rob Wright's discussion Radiant barrier over blown in insulation
"Sounds like a lot of words to me.  I still don't see the science behind it."
Nov 26, 2011

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BPI Energy Auditor and Envelope Pro; RESNET Hers rater and energy smart contractor
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Robert Wright

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At 1:12pm on August 18, 2011, Diane Chojnowski said…

Hi Rob,

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!

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