Ed Minch
  • Chestertown, MD
  • United States
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Cold climate wall
2 Replies

I have heard Joe Lstriburek twice say that a wall in this climate (Albany NY, almost 6,000 DD) should have 1/3 of the R-value on the outside of the structure and 2/3 in the cavities to prevent…Continue

Started this discussion. Last reply by Don Hynek Jul 11, 2014.

Duct testing in a conditioned crawlspace
13 Replies

Concerning duct testing in crawlspaces (this is for new houses for Energy Star, but will be the same for existing houses):I have a house on a conditioned crawl with ducts in that crawl.  There is an…Continue

Tags: testing, duct, crawl, conditioned

Started this discussion. Last reply by Ed Minch Nov 25, 2011.

 

Ed Minch's Page

Latest Activity

Ed Minch replied to Bud Poll's discussion Cellulose As An Air Seal
"Russell -  "Precision Air Sealing seems hopeless in a previously insulated attic, short of peeling most of it back so you're sure you find all the wall tops, lights, abandoned ceiling light JB's, pipe and wiring…"
Dec 6, 2014
Ed Minch replied to Bud Poll's discussion Cellulose As An Air Seal
"Pat, we have been paid to remove old insulation in perhaps 4-5 attics out of the 10,000+ retrofits that we have completed,and this was always because we couldn't talk the HO out of it.  We have never had an odor complaint.  I would…"
Dec 6, 2014
Ed Minch replied to Bud Poll's discussion Cellulose As An Air Seal
"Terry Degree of difficulty makes all the difference, and all of our auditors started out in attics so they understand this stuff to prpperly estimate time. A 1000-1200 ft2 attic with no surprises and a soffit or two, 2 men, 2 hours = 4 man hours and…"
Dec 5, 2014
Ed Minch replied to Bud Poll's discussion Cellulose As An Air Seal
"Bud Not sure I agree with you on this.  The proper way to do this in my book is to brush aside the old insulation or move batts - regardless of what material it is - in the appropriate locations, seal the cracks, then move the insulation back…"
Dec 5, 2014
Ed Minch replied to Bud Poll's discussion Cellulose As An Air Seal
"A long time ago in a galaxy far far away we did a bunch of field tests on this, maybe 1983 or 4.  This is what we did: In perhaps 8-10 houses that had blown fiberglass, we did a blower door test, then brushed aside the insulation and sealed the…"
Dec 4, 2014
Ed Minch replied to Matthew P's discussion Expert Eye Needed in the group INFRARED THERMOGRAPHY USERS
"Chad As I said: "The blower door would have caused the cold air to come down the wall/ceiling joint into the wall - but this is not the case, and thermal bridging would have made all the studs show as much as the top plates." There is no…"
Nov 15, 2014
Ed Minch replied to Richard Beyer's discussion Media Reports Spray Polyurethane Foam Insulation spontaneously combusted a $5M Connecticut Home
"Richard  I have to re-learn how to read - that was in an earlier for in 2011.  Thanks Ed"
Nov 13, 2014
Ed Minch replied to Richard Beyer's discussion Media Reports Spray Polyurethane Foam Insulation spontaneously combusted a $5M Connecticut Home
"Interesting to read that there may never be a cause determined for this blaze.  For those of you that install foam - do you spray into a garbage bag as the equipment is firing up to check your mix?  If so, could it have been the thickness…"
Nov 13, 2014
Ed Minch replied to Kurt Shafer's discussion Where can I find the best radiant barrier to install under my roof?
"The important thing here is the surface temperature of the ceiling against the attic as compared to the interior temperature of the house as this is where the money goes.  The OP does not state what the air temp is when he has a 90° ceiling…"
Oct 30, 2014
Ed Minch replied to Bob Reuther's discussion ridge vent orientation
"Another observation: I was called to look at 13 houses in a development that had mold on the underside of the roof sheathing.   There were perhaps 150+ houses in this development but these 13 were neighbors, 6 on one side of the street and 7 on…"
Oct 11, 2014
Ed Minch replied to Bob Reuther's discussion ridge vent orientation
"A different rant, I agree.  The issue is:  "what is the ceiling temperature of my top floor on a hot sunny day?"  I have yet to see comparisons of different attic vents, insulation levels, and wind conditions that compare…"
Oct 11, 2014
Ed Minch replied to Bob Reuther's discussion ridge vent orientation
"Wait minute - I've been told that air sealing and insulating your attic protects your house from those hot attic temperatures.  You mean it's not true?  "
Oct 11, 2014
Ed Minch replied to Bob Reuther's discussion ridge vent orientation
"My friend and colleague Dick Tracy (who was an early adaptor in building science with a blower door and scanner in 1979) told me something interesting a few years back. I commented on several times seeing snow sitting on top of the attic insulation…"
Oct 9, 2014
Ed Minch's discussion was featured

Cold climate wall

I have heard Joe Lstriburek twice say that a wall in this climate (Albany NY, almost 6,000 DD) should have 1/3 of the R-value on the outside of the structure and 2/3 in the cavities to prevent condensation inside the wall. So 3 questions:1) Is there agreement that this generalization covers most bases?2) I have a couple of ideas in mind, but has anyone come up with a wall they have had success with?3) Would wet-spray cellulose in the cavity reduce the potential for condensation inside the…See More
Jul 14, 2014
Don Hynek replied to Ed Minch's discussion Cold climate wall
"My quick and dirty guess is that you have the proportions backward. For 30 years, cold-climate builders used a little bit of exterior insulation, to reduce thermal bridging. But if you went overboard, the wall couldn't dry to outdoors, and rot…"
Jul 11, 2014
Sean Lintow Sr replied to Ed Minch's discussion Cold climate wall
"A few quick thoughts: For #1 - that is the minimum, he would say the optimal is all insulation on the outside (see his perfect wall) --- oh I am sure many will disagree especially when you get to NAHB, but yes that is a good rule of thumb. #3 - as…"
Jul 10, 2014

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At 7:12am on December 24, 2010, Diane Chojnowski said…

Hi Ed,

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!

Don't forget to upload your profile photo. And, add your location on our Member
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Diane, HEP Moderator

 
 
 

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