Brad Cook
  • Male
  • Warren, VT
  • United States
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Brad Cook's Discussions

Venting a clothes dryer through an unheated garage
10 Replies

We recently vented a gas clothes dryer through an attached and unheated garage, to an outside wall of the garage. We are located in Central Vermont. We used 30 ga. 4" galvanized duct and taped all…Continue

Started this discussion. Last reply by Eric Kjelshus Jan 25, 2013.

Slow cure foam injected behind fiberglass in walls?
23 Replies

Has anyone heard of injecting slow rise closed-cell polyurethane foam (such as Foamo's HandiFLOW) into wall cavities behind existing fiberglass batts?  or injecting it into empty rafter bays? I have…Continue

Started this discussion. Last reply by Bob Sullivan Sep 2, 2011.


Brad Cook's Page

Latest Activity

Brad Cook replied to Pat Dundon's discussion Take the truckload of chocolate away from the 5 year olds.
"But the good news is that lower fuel prices: will free up more $$ for the lower and middle class to spend on important things and help the economy will create a disincentive for the Keystone Pipeline and Hydrofracting it might free up enough money…"
Jan 9
Brad Cook replied to John Shillito's discussion Fixing a water heater?
"A common cause that I have seen is undersized gas supply piping, especially when a combustion appliance is added to the line. Undersized gas supply pipe = lower gas pressure => high CO"
Jun 12, 2014
Brad Cook replied to Patrick Michaelyan's discussion Closed-Cell Foam & Brick Walls
"Here in central Vermont, we see houses from the 1800s with brick walls as part of the foundation, but the brick is not structural. Large slabs of granite are holding up the typical 8x8 sill beam. If we were to spray SPF (Spray Polyurethane Foam) on…"
Mar 14, 2014
Brad Cook replied to Mike Rogers's discussion Where do you fall in the "staged" versus "gotta be all at once" discussion?
"I would argue that ALL projects are "staged", unless it is a NetZero project. There will always be room for improvement. Let's look at projects as degrees of comprehensiveness. On a scale of 1-10, with 1 representing a little air…"
Mar 8, 2014
Brad Cook commented on Phil Luther's blog post The Great Water Heater Temperature Setting Debate
"And what, exactly, is the risk of Legionella in your water supply?  How does the Legionella get into your water heater (water supply)? If 140 deg. is a burn hazard and a mixing valve is required (which often fail in HOT position), aren't…"
Feb 28, 2014
Brad Cook replied to Dennis McCarthy's discussion The growing need for lighting auditors
"Dennis, you make some very good suggestions. My philosophy is that we should be looking at everything related to energy when we do an audit and that includes lighting. Getting training followed by certification may be daunting, but auditors should…"
Feb 7, 2014
Brad Cook replied to Kim Tanner's discussion Long term average
"When the wind is breezy, I use long term averaging. The more the pressure jumps around due to breezes, the longer the term that I use. Even then, I mentally average the readings. This is after I have taken steps to shield the end of the outside hose…"
Jan 13, 2014
Brad Cook replied to James Murray's discussion Water Water Everywhere
"Walk away. To be blunt, in my opinion, if you are asking these questions on this project, you should be starting with less complicated jobs. Manufactured homes are not the same as stick built, although there are similarities. The bathroom vent fans…"
Dec 13, 2013
Brad Cook replied to Green Iowa AmeriCorps's discussion French door air sealing
"Learn to take better pictures. Use the flash more often and focus! Without being there and with a couple of out of focus and poorly lit photos, everyone would be taking a guess at a solution. I need to "read" the entire door before making…"
Nov 16, 2013
Brad Cook replied to Bud Poll's discussion Calculating attic ventilation
"Everything that I have read on the subject agrees with what John Nicholas presented. What appears to be a big misconception by many people is that we ventilate a roof to make it "cold" to minimize ice dams. The real reason is that the…"
Oct 25, 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
Brad Cook replied to Jack Baikoff's discussion Vermiculite in the fireplace
"It wasn't until about 1994 that it was discovered that there asbestos was found in the vermiculite in the Libby-Owen Mine in Montana, which was the source for 70% of the vermiculite sold in the US. Vermiculite is now considered a hazardous…"
Sep 22, 2013
Brad Cook replied to Bachi Brunato's discussion Extraordinarily High CO Reading on a Furnace Vent: 3950 PPM
"You really need a gas certified technician who really knows what they are doing, There are many possible causes of high CO in the flue:  low gas pressure (failed pressure regulator; sticking gas valve not opening all the way; kinked soft copper…"
Aug 22, 2013
Brad Cook replied to Ryan Moore's discussion Instant read thermometers in the group Tools of the Trade
"That depends on what you are measuring. When I am measuring the temperature of the air in a house or outside, I also measure the relative humidity (RH), which will take several minutes to stabilize with a digital Temp/RH meter. If I am measuring the…"
Apr 27, 2013
Brad Cook joined Diane Chojnowski's group

Tools of the Trade

A hammer and a saw used to be the key tools for home contractors. Today, the best-in-breed also use high-tech equipment while performing a professional energy audit or verifying that construction has been done correctly.
Apr 27, 2013
Brad Cook replied to Pat Dundon's discussion Q: Hey Boss, we got 2 waterheaters and one chimney what do we do? A; Vent them together. in the group Hall of Shame
"No drip leg on the gas line, which could impede (stick open) the gas valve"
Mar 21, 2013

Profile Information

Building Performance Services LLC
Professional Certification
BPI Basic, Shell, Heating; Level I IR (Snell)
Professional Interests
Home Performance contracting
LinkedIn Profile

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At 6:09am on June 10, 2011, Diane Chojnowski said…

Hi Brad,

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!

Diane, HEP Moderator


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Bob Mariani replied to Alan Gindt's discussion Minneapolis Blower Door System for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Is this still available?"
2 hours ago
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Eric Kjelshus replied to John Gillis's discussion Energy Savings of Whole House Fans vs. Air Conditioners in SoCal Featured on New 'Ask This Old House' Season in the group News & Announcements
"2000 SF house in Kansas City needs a 36" whole house fan or about 8,000 CFM takes a 1/4 HP fan…"
11 hours ago
Eric Kjelshus joined Diane Chojnowski's group

News & Announcements

Share your news and announcements with the community in this group.See More
11 hours ago
Eric Kjelshus replied to David Byrnes's discussion Insulation machine preferences
"If you find over heating look at voltage/amp draw very hard.    I find if you have…"
11 hours ago
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GreenPoint Rated CORE Training at Best Western Plus Marina Shores Hotel

October 15, 2015 to October 17, 2015
Increase your certifications or get to know the GreenPoint Rated system so that you can work more…See More
14 hours ago
Colin Genge replied to John Carton's discussion Smoke Puffer stick
"Retrotec Smoke Puffer is available for pickup from Energy Federation. They will not ship them due…"
14 hours ago

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