Blake Shurtz
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  • Richmond, CA
  • United States
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Ventilating Attics- Rafter Vents
5 Replies

There is a thorough literature on ventilating soffit vents correctly. In CA, many attic vents around the building perimeter are more vertical, like the image below:…Continue

Started this discussion. Last reply by David Eakin Aug 12.

Duct blaster with asbestos?
7 Replies

I'd like to know if BPI has banned the use of the duct blaster in the presence of asbestos ductwork. Is this the case? If there is any documentation from BPI, what/where is it?

Started this discussion. Last reply by Glen Gallo Aug 7.

Crawlspaces in Bay Area
5 Replies

Does anyone have any info/thoughts on the effectiveness of crawlspace vapor barriers over the soil in a vented crawlspace in the bay area, and how well it reduces indoor humidity?IMO, I think there's…Continue

Started this discussion. Last reply by tedkidd Jan 9, 2014.

 

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Blake Shurtz's discussion was featured

Ventilating Attics- Rafter Vents

There is a thorough literature on ventilating soffit vents correctly. In CA, many attic vents around the building perimeter are more vertical, like the image below:My question is, how do we baffle these vents while still insulating over the top plate of the wall? It seems like this is very difficult or just plain…See More
Aug 17
David Eakin replied to Blake Shurtz's discussion Ventilating Attics- Rafter Vents
"It goes back to the project management axiom: Do you want good, quick, or cheap? Pick one. If you just want to provide some venting with the existing situation, get the bendable foam air channels and live with the marginal insulation at the top…"
Aug 12
John Nicholas replied to Blake Shurtz's discussion Ventilating Attics- Rafter Vents
"You should go high and low on the roof as Glen suggested.  That would be simple.  You can do turtle type vents low and high.  You can do eyebrows low.  Or you can install a simple horizontal low vent.  From the inside of the…"
Aug 7
Glen Gallo replied to Blake Shurtz's discussion Duct blaster with asbestos?
"As HERS Raters in California we cannot run tests if it is present per CEC protocols. It is a slippery slope here in the litigious Republic of California. I would error toward caution and if you suspect there is asbestos to not test, have suspected…"
Aug 7
Glen Gallo replied to Blake Shurtz's discussion Ventilating Attics- Rafter Vents
"I think a better strategy would have been high and low vents in the roof itself  and gables to comply with code and fill the cavity with loose That being said with as tight as it appears on this photo and with what you have in front of you you…"
Aug 7
Bud Poll replied to Blake Shurtz's discussion Ventilating Attics- Rafter Vents
"I assume the picture is just an illustration.  If you are building new, then a raise heel truss will provide the required space.  In CA you should also have sufficient overhang for shading, assuming you are in one of the warmer areas. If…"
Aug 6
Sean Lintow Sr replied to Blake Shurtz's discussion Ventilating Attics- Rafter Vents
"Based on what I see on the pics you can't really - 2x4 wall with no soffit? The only code approved away is to seal those up & go with a hot roof system which still might not make code for the minimum required"
Aug 6
Blake Shurtz posted a discussion

Ventilating Attics- Rafter Vents

There is a thorough literature on ventilating soffit vents correctly. In CA, many attic vents around the building perimeter are more vertical, like the image below:My question is, how do we baffle these vents while still insulating over the top plate of the wall? It seems like this is very difficult or just plain…See More
Aug 6
Tom Barrett replied to Blake Shurtz's discussion Duct blaster with asbestos?
"Asbestos in ductwork is often on the outside of the ducts and is commonly asbestos duct tape and mastic (the mastic may also contain asbestos), but it is on the exterior of the ducts in the attic or crawlspace or basement and not in the living area.…"
Aug 6
Lee Laney replied to Blake Shurtz's discussion Duct blaster with asbestos?
"We find asbestos duct tape pretty commonly in our area of NW Washington State (and in some cases, fully wrapped duct runs). Our program has a policy of not conducting the blower door test when vermiculite or friable asbestos tape is…"
Aug 6
Colin Genge replied to Blake Shurtz's discussion Duct blaster with asbestos?
"Two states have concluded that blower door testing does not increase the liability wrt asbestos.  As some of you have suggested, life as usual disturbs it more than testing would. I doubt most blower door or duct testers have the time or skills…"
Aug 3
Blake Shurtz's discussion was featured

Duct blaster with asbestos?

I'd like to know if BPI has banned the use of the duct blaster in the presence of asbestos ductwork. Is this the case? If there is any documentation from BPI, what/where is it?
Jul 14
Blake Shurtz replied to Blake Shurtz's discussion Duct blaster with asbestos?
"I rarely test asbestos- I just perform a visual on-site. I do not think running the duct blaster would be worse than running the system itself. For this reason, in particularly bad cases, I have recommended not running the system at all until…"
Jul 7
Sean Lintow Sr replied to Blake Shurtz's discussion Duct blaster with asbestos?
"In all seriousness - just how many do you see (tested to make sure it was) & do you really think running the tester would be worse than them running the unit normally? With that - BPI states in EP / Heat & not sure which other ones: Where…"
Jun 27
Bud Poll replied to Blake Shurtz's discussion Duct blaster with asbestos?
"I don't know about BPI, but I discussed this issue (blower door and asbestos, same thing) years back with my insurance carrier and we agreed, any, that is any, asbestos and they want to see documentation from a licensed abatement company (who…"
Jun 25
Blake Shurtz posted a discussion

Duct blaster with asbestos?

I'd like to know if BPI has banned the use of the duct blaster in the presence of asbestos ductwork. Is this the case? If there is any documentation from BPI, what/where is it?
Jun 25

Profile Information

Company
Advanced Home Energy
Professional Certification
BPI Building Analyst
Professional Interests
Improving my knowledge of the vast home performance industry.
Website URL
http://www.advancedhomeenergy.com
Blog URL
http://advancedhomeenergy.com/blog
Twitter ID
blakeobeans
LinkedIn Profile
blakeobeans

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At 9:28pm on January 9, 2012, Diane Chojnowski said…

Hi Blake,

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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