Jack Baikoff
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  • Portland, OR
  • United States
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Jack Baikoff's Discussions

Real data on the magic of Low E coatings for cold climates?

Started this discussion. Last reply by Kurt Albershardt Oct 25, 2013. 2 Replies

I bet most of you are familiar with the claims of the window industry marketing a Low-E coating as a Cure-All for any house, any climate and any window, no matter what direction it faces. You have…Continue

Just how much does adding air barrier to a knee wall insulation increase it's performance?

Started this discussion. Last reply by Jack Baikoff Oct 25, 2013. 29 Replies

I know we have a lot of scientifically minded people here and I bet someone has access to a reliable test data showing the answer to the question that's been on my mind for years:When we add…Continue

Vermiculite in the fireplace

Started this discussion. Last reply by Brian Robinson Feb 29. 13 Replies

As an energy auditor I occasionally see vermiculite in the gas fireplaces. Does anyone know if any of the vermiculite they use(d) for fireplaces has asbestos fibers and if it's safe to run blower…Continue

Tags: Fireplace, Vermiculite

Measuring fresh air intake ducted to a return and no way of measuring from outside.

Started this discussion. Last reply by Dale Sherman Feb 7, 2013. 22 Replies

I am sure this is a challenge that some of you have faced before:You have an air handling system with fresh air intake that is ducted into the return and is terminated on the outside in a way that…Continue

 

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Latest Activity

Brian Robinson replied to Jack Baikoff's discussion Vermiculite in the fireplace
"All that really matters is to assume it's an ACM until "proven" otherwise or professionally remediated & tested clear by an industial hygenist. Testing is free from the ZAI Trust for vermiculite anywhere in a home & they pay…"
Feb 29
Joseph Burley replied to Jack Baikoff's discussion Vermiculite in the fireplace
"In my testing experience I am not finding that much variability between samples for attic insulation. Stratification is a bigger issue in terms of variability between locations in that the asbestos is found in the smaller settled fraction at the…"
Feb 29
Don Hynek replied to Jack Baikoff's discussion Vermiculite in the fireplace
"Our weatherization protocol (based on Wisconsin DHS rules) says there is no reliable sampling protocol for asbestos  in vermiculite. The reason (I am told)  is that the asbestos fibers laid in veins in the original ore, and not dispersed…"
Feb 29
Rich Manning replied to Jack Baikoff's discussion Vermiculite in the fireplace
"If its vermiculite treat it as having asbestos, unless you want to pay someone to test it, and I would not do a blower door until it has been proven."
Feb 29
Joseph Burley replied to Jack Baikoff's discussion Vermiculite in the fireplace
"I am an asbestos inspector. The last two times I have tested fireplace vermiculite it has tested negative so its not automatically asbestos. Since its loose and not affixed to or installed in the building its not a regulated asbestos building…"
Feb 26
Talena Marie Ross commented on Jack Baikoff's photo
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Spaces we have to work in.

"Looks quite cramped, and like  Michael said it is a great thing that it isn't in July!"
Apr 10, 2014
Jack Baikoff commented on Michael Dunseith's photo
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HEP Certs 4

"Impressive. BPI must love you!"
Oct 25, 2013
Jack Baikoff replied to Jack Baikoff's discussion Just how much does adding air barrier to a knee wall insulation increase it's performance?
"Wow, guys! I am quite surprised to see how much this topic has stirred.  That's good, I hope this is the case where out of a group conversation and a common search some clarity comes up. So far it hasn't cleared that much, I agree…"
Oct 25, 2013
Kurt Albershardt replied to Jack Baikoff's discussion Real data on the magic of Low E coatings for cold climates?
"So much of this depends on the size and orientation of the window.  North-facing picture windows are more common than one would suspect, and with our high altitude dark nights, you can really feel the "suck" from the night sky. New…"
Oct 25, 2013
Tony Ramirez replied to Jack Baikoff's discussion Real data on the magic of Low E coatings for cold climates?
"Low E helps in summer when the sun is at a different angle.  The UV rays reflect differently then the winter, when the sun is lower.  Heat is better reflected in summer versus winter due to the angle of the sun during the seasons.…"
Oct 21, 2013
Ed Minch replied to Jack Baikoff's discussion Just how much does adding air barrier to a knee wall insulation increase it's performance?
"Brad, my belief is that "it depends" is so much a factor here that a study would be meaningless.  The extremes would be if the batt has fallen at one end, and would be insulation properly contacting the interior drywall and no wind…"
Oct 19, 2013
Brad Cook replied to Jack Baikoff's discussion Just how much does adding air barrier to a knee wall insulation increase it's performance?
""When we add Vapor-permeable Air Barrier to those knee walls just how much exactly that increases the performance of that insulation?" The original post by Jack is an excellent question, asking if anyone knows of actual testing…"
Oct 19, 2013
Ed Minch replied to Jack Baikoff's discussion Just how much does adding air barrier to a knee wall insulation increase it's performance?
"Covering the kneewall back serves 3 purposes.  1) it prevents the batts from falling off later on 2) it forces the batt to contact the drywall 3) it prevents wind washing. This is why it is very hard to measure the effect of covering the…"
Oct 18, 2013
Ed Minch replied to Jack Baikoff's discussion Just how much does adding air barrier to a knee wall insulation increase it's performance?
"Anthony I am not getting that you need to cover the kneewalls according to this provision. You can have an airtight kneewall with no back on it.  I think what they are talking about is "below" the kneewall, between the joists. By the…"
Oct 18, 2013
Anthony Hyde replied to Jack Baikoff's discussion Just how much does adding air barrier to a knee wall insulation increase it's performance?
"In the past contractors installed a non perforated material similar to this as a radiant barrier in attics, often spread flat over the insulation in the attic floor. Moisture condensed into liquid water on the bottom side and created problems. …"
Oct 18, 2013
Nate Adams replied to Jack Baikoff's discussion Just how much does adding air barrier to a knee wall insulation increase it's performance?
"Honest Building Science question on this topic: If the drywall of the knee wall is well sealed (meaning outlets, top and bottom plates, etc) as well as the floor joist below, if there are fiberglass batts in the knee wall, is is really that…"
Oct 18, 2013

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Company
Pyramid Heating and Cooling
Professional Certification
BPI BA,Envelope, Heating, HERS, PTCS, Thermographer Lv1
Professional Interests
Solar thermal, Passive homes
Website URL
http://baikoffphotography.com

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