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Best Practices (Resident…

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Armando Cobo's Discussions

Blower door testing on multi bi-folds
14 Replies

Have anyone performed a blower door test on a new home that has a multi bi-fold door installed on an exterior wall? (As in NanaWall, Lanai or Sierra Pacific bi-folds). Is there any performance…Continue

Started this discussion. Last reply by Armando Cobo Apr 17, 2012.

Manual J Report
29 Replies

I have designed a 4920 sf house in Dallas with a sealed crawl space. The crawl space walls are concrete and a have 2x10 floor joist system on top of it. The crawl space walls are insulated with 1”…Continue

Started this discussion. Last reply by tedkidd Jan 14, 2012.

Green Project Verifiers
10 Replies

The City of Dallas is going to implement a program where Certified Verifiers (BPI & HERS) will be allowed to do plan reviews on green projects. I’m curious to know if other cities or…Continue

Started this discussion. Last reply by Armando Cobo Aug 25, 2011.

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Armando Cobo replied to Greg La Vardera's discussion New Construction: Easing Builders into High Performance Construction

"Greg, These forums are for members to learn and exchange ideas, whether we agree or disagree. In my previous post I was just giving other readers information on where to read more about AF from highly qualified and unbiased resources by hundreds of…"

Jun 12, 2012

Armando Cobo replied to Greg La Vardera's discussion New Construction: Easing Builders into High Performance Construction

"Maybe other readers would be interested in reading over twenty years of great research and information about AF from hundreds of scientist at four national research labs, like PNLN, ORNL, NREL & LBNL, and from research teams like BSC, IBACOS,…"

Jun 12, 2012

Armando Cobo replied to Greg La Vardera's discussion New Construction: Easing Builders into High Performance Construction

"Greg, There is so much that I disagree with your AF blog, that it would take another thread to get into. I believe your view of AF is too simplistic, but it also takes good detailing and practice. I've designed a lot of homes with AF for…"

Jun 11, 2012

Armando Cobo replied to Greg La Vardera's discussion New Construction: Easing Builders into High Performance Construction

"Interesting framing method and I appreciate the effort to show the videos, however, I have differences of opinion with Mr. La Vardera on a few points: 1. Advanced Framing is not just a top plate and in-line framing only issues, but also designing…"

Jun 11, 2012

Armando Cobo commented on Macie Melendez's blog post The Google Earth of IR Images—Q&A With Storm Duncan

"Interesting technology development and it could be a great improvement for our business, but the skeptic in me asks if they have validated or compare their results of their program with “old fashion” independent energy audits. Just…"

Jun 7, 2012

Armando Cobo replied to Jennifer Rupnow's discussion Crawlspace Vapor Barrier: Install Correction and Future Guidance in the group Best Practices (Residential)

"John, Drying is the whole idea... with a closed cell it'll never get a chance to dry out and it'll rot; or maybe we need to agree to disagree on the building science of it."

May 17, 2012

Armando Cobo replied to Jennifer Rupnow's discussion Crawlspace Vapor Barrier: Install Correction and Future Guidance in the group Best Practices (Residential)

"On the contrary, if there is any wicking through the concrete or any moisture leaks on the rim joist, the open cell will allow any wood and the wall assembly to dry."

May 16, 2012

Armando Cobo replied to Jennifer Rupnow's discussion Crawlspace Vapor Barrier: Install Correction and Future Guidance in the group Best Practices (Residential)

"Sorry, I should have said: open cell foam on the rim of the floor joist."

May 16, 2012

Armando Cobo replied to Jennifer Rupnow's discussion Crawlspace Vapor Barrier: Install Correction and Future Guidance in the group Best Practices (Residential)

"My experience with sealed, conditioned crawl spaces, you need to have a 20 mil poly-reinforced liner, with 0 perm rating, sealed with approved tape or mastic on the joints and to the wall. Good liners have an antimicrobial additive that will not…"

May 16, 2012

Armando Cobo replied to Armando Cobo's discussion Blower door testing on multi bi-folds

"You are so right David. It would be nice if their testing is done under the same realistic conditions as their products are tested in real world... that maybe too much to ask. I'll keep waiting on a rater's test one of these days."

Apr 17, 2012

David Meiland replied to Armando Cobo's discussion Blower door testing on multi bi-folds

"I assume they're referring to an ASTM E283 test, although I could be completely wrong... and as far as I know, that test uses a number of different test pressures and conditions, it's not a simple -50pa blower door test. BUT... if that…"

Apr 17, 2012

Armando Cobo replied to Armando Cobo's discussion Blower door testing on multi bi-folds

"Here is the only reply I've had from any manufacturer: A Regional Manager for Sierra Pacific Windows said: “We do not have the report yet, but here is the data from the test lab, for our bi-fold doors. This was forwarded to me by one of…"

Apr 16, 2012

Bruce Navin replied to Armando Cobo's discussion Blower door testing on multi bi-folds

"Yes, I and unless the door came with an integral frame, I don't see how they would be able to give a reliable result simply due to installation variables. "

Apr 13, 2012

Armando Cobo replied to Armando Cobo's discussion Blower door testing on multi bi-folds

"One of the problems we get with all manufacturer's data is that it's usually performed in control environments,,, and it would be nice to know how these doors do in real world. I've taken tours of a half a dozen window companies, but…"

Apr 12, 2012

David Meiland replied to Armando Cobo's discussion Blower door testing on multi bi-folds

"It'd be nice if the manufacturers could give you some air-infiltration test data to use. There's a spot on the NFRC sticker for air leakage, but apparently very few manufacturers do the testing on their products. I've tested some…"

Apr 12, 2012

Armando Cobo replied to Armando Cobo's discussion Blower door testing on multi bi-folds

"Thanks Bruce for the suggestions. I've looked at their websites but no information on BDT and leackage. However, no details show your sugestions, I'll wait a little longer on the manufacturers and see what they have to say."

Apr 12, 2012

Profile Information

Company: Armando Cobo, Designer

Professional Interests: Building science, high performing and healthy home design, teaching.

Website URL: http://www.CoboDesigner.com

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At 11:34am on August 22, 2011, Diane Chojnowski said…: Hi Armando,

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!

Thanks!
Diane, HEP Moderator

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