Bruce Dichter
  • Santa Rosa, CA
  • United States
Share on Facebook Share on Facebook Share Twitter
  • Featured Blogs
  • Discussions (4)
  • Events
  • Groups
  • Photos
  • Photo Albums
  • Videos

Bruce Dichter's Discussions

Measuring moisture intrusion
6 Replies

Hi, All,My normal territory is in Northern California, where it's hot and dry.  Recently, however, I helped with an evaluation in the tropics, where the temperature was regularly in the mid-80s, as…Continue

Started this discussion. Last reply by William H Nickerson Jul 28, 2013.

 

Bruce Dichter's Page

Latest Activity

Bruce Dichter replied to Green Iowa AmeriCorps's discussion French door air sealing
"Another option to consider is adding an astragal.  This is a molding fastened to the outside edge of the passive door, lapping over the active door.  Run weather stripping on the inside face that contacts the active door.  This will…"
Nov 15, 2013
Bruce Dichter replied to Jack Baikoff's discussion Just how much does adding air barrier to a knee wall insulation increase it's performance?
"Is it possible that the perforations in the backing of the batt insulation are intended to allow for water vapor diffusion and not serve as an air barrier?  Generally moisture will move from hot to cool, and if it gets trapped in an assembly…"
Oct 18, 2013
William H Nickerson replied to Bruce Dichter's discussion Measuring moisture intrusion
"From his one email notice I just have spent the last 6 hrs. reading and downloading and printing out all that I can about moister removal. I live in central Virginia and the last 2 two weeks seen more condensation on exposed fiberglass bats than I…"
Jul 28, 2013
Bruce Dichter's discussion was featured

Measuring moisture intrusion

Hi, All,My normal territory is in Northern California, where it's hot and dry.  Recently, however, I helped with an evaluation in the tropics, where the temperature was regularly in the mid-80s, as was the relative humidity.  It was their winter.  One of the chief goals is to reduce electrical usage, which in turn means reducing the use of air conditioning.  Much of the load on the AC is to remove moisture, so it strikes me that one strategy is to limit moisture intrusion.  But how do you…See More
Jul 25, 2013
David Meiland replied to Bruce Dichter's discussion Measuring moisture intrusion
"I think you could do a passable job with a box fan, an anemometer, and a manometer."
Jul 20, 2013
Bud Poll replied to Bruce Dichter's discussion Measuring moisture intrusion
"I have an approach for estimating air leakage using just a manometer.  Only slightly better than a wild guess, but so much of what we do is based upon guessing, a little more can only help.  An option for a blower door might be Australia,…"
Jul 20, 2013
Bruce Dichter replied to Bruce Dichter's discussion Measuring moisture intrusion
"Hi, David and Bud, Thanks for your replies.  Full disclosure: I never performed a blower door test.  The island is in Fiji, and remote even by Fijian standards.  Also, the current is 220V.  So I wasn't able to arrange the…"
Jul 20, 2013
Bud Poll replied to Bruce Dichter's discussion Measuring moisture intrusion
"Hi Bruce ad David, The outside air, temp and humidity, sets a baseline for how low you can go without some form of powered mechanicals to remove moisture and or cool the space.  Even a tight house will need to exchange a lot of air to reduce…"
Jul 20, 2013
David Meiland replied to Bruce Dichter's discussion Measuring moisture intrusion
"Someone smarter than me could calculate the rate of vapor diffusion through the various materials you mention (such as the slab floor), given a few facts. I do think it would be worth exploring how much the slab might be contributing to interior…"
Jul 20, 2013
Bruce Dichter posted a discussion

Measuring moisture intrusion

Hi, All,My normal territory is in Northern California, where it's hot and dry.  Recently, however, I helped with an evaluation in the tropics, where the temperature was regularly in the mid-80s, as was the relative humidity.  It was their winter.  One of the chief goals is to reduce electrical usage, which in turn means reducing the use of air conditioning.  Much of the load on the AC is to remove moisture, so it strikes me that one strategy is to limit moisture intrusion.  But how do you…See More
Jul 19, 2013
Bruce Dichter is now a member of Home Energy Pros
Mar 18, 2011

Profile Information

Company
Living Homes Construction
Professional Certification
licensed general contractor; BPI Building Analyst

Comment Wall (1 comment)

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

At 6:27pm on March 19, 2011, Diane Chojnowski said…

Hi Bruce,

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 Map!


Thanks!
Diane, HEP Moderator

 
 
 

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Mst. Fatema Aktar is now a member of Home Energy Pros
6 hours ago
Robert Leone added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Blower Door Package for Sale

Hi,I am selling my blower door with extras as a package or individually. These items are used but…See More
13 hours ago
Profile IconRobert Leone and Richard Vito joined allen p tanner's group
Thumbnail

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…See More
13 hours ago
Richard Vito joined Sean Lintow Sr's group
Thumbnail

Best Practices (Residential)

Best Building, Retrofitting, or even Auditing Practices - what are they, what should change, what…See More
21 hours ago
Richard Vito joined James Sayers's group
Thumbnail

Marketing Energy Efficiency

Sharing ideas, tools and examples of promoting energy efficiency to consumersSee More
21 hours ago
Richard Vito joined Allison A. Bailes III's group
Thumbnail

HVAC

HVAC design, Manuals J, S, T, & D, Duct leakage, Air flow, ENERGY STAR new home requirements,…See More
21 hours ago
Richard Vito joined Kyle Brown's group
Thumbnail

Wrightsoft - Manual J / Manual D

If you use Wrightsoft to calculate loads or design ducts, you likely have questions.  Get answers…See More
21 hours ago
Jim Gunshinan commented on Jim Gunshinan's blog post Energy Upgrade California—Up Close and Personal
"I had a revelation while attending Bruce Manclark's session of duct leak testing at the Energy…"
yesterday
George J. Nesbitt commented on Jim Gunshinan's blog post Energy Upgrade California—Up Close and Personal
"Blower Door; the 2007 test was a depressurization test, and the 2014 a pressurization test, which…"
yesterday
George J. Nesbitt replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Plan, plan, plan, plan. The 1st step to is to understand the house, how it's built, the…"
yesterday
George J. Nesbitt posted an event

High Performance Windows - A Panel of Experts at Pyramid Alehouse`

April 26, 2014 from 3pm to 5pm
Join a lively panel discussion on high performance windows. We'll cover some basics, as well as…See More
yesterday
Kaushal Bharath Raju replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Hi David, Thanks for pointing out Martin Holiday's article. I do not wish to engage in the…"
yesterday

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service