Whether you are performing blower door testing or hiring someone to perform the test for you, it’s a good idea to understand how a home should be setup for the test. Should a door be open or closed? What can be sealed off? How to address rooms attached to the house but are outside the air control layer? That’s today’s topic, attached garages and three season porches. How should those spaces be setup for a blower door test?
Continue reading “Shorts-Attached Structures Outside the Air Control Layer and Blower Door Testing”
Back from IBS, as always, what a great show. This was my fourth time attending, I always learn something new, get the chance to meet new people, and catch up with old friends. This year was no different.
Continue reading “Shorts-The International Builders Show”
I was recently teaching a continuing education class on energy code, the class was attended by about 100 general contractors. We covered a lot of information about energy and building science, one of the topics I discussed, and was hoping every contractor there would remember, was the topic; who is responsible?
Continue reading “Shorts-If They’re Not Asking, And You’re Not Telling, Somebody’s Assuming”
This year seems to be a good (or bad depending on how you look at it) year for ice dam problems in my area, the intensity of ice dams seems to change year to year. I was recently on an ice dam diagnostic with an insulating contractor and a general contractor, the home was built in the early 1990’s and there is evidence there have been issues from the beginning. We spent a couple hours testing this home, I’ll get into what we found in a bit.
Continue reading “Building Science-Ice Dams”
What needs to be under a slab? Well, it kind of depends. Is the slab for a home or an accessory building? Is there heat in the slab? Is there a radon requirement? This quick post is all about what I like to see included under a slab and the reasoning behind the sequencing.
Continue reading “Shorts-Sub-Slab Assembly”
This three-part series first appeared on the Green Building Advisor website and has been condensed into one post.
An unconditioned and uninsulated crawlspace, an unsealed and uninsulated forced air heating system, and an uncovered dirt floor, which by the way has a sewage leak. If this were your home and you wanted to make improvements, where would you start? Continue reading “Building Science-Existing Construction Improvements”
I think most of us know of this man, one of the founders of The Energy Conservatory and designers of the Minneapolis Blower Door. I recently had the opportunity to chat with Gary. My intent with the interview is a little different from other interviews that have featured Mr. Nelson. I wanted to ask questions from a practitioner working in the field point of view. Continue reading “Building Science-An Interview with Gary Nelson”
A blower door is an expensive tool. A full kit including frame, panel, fan and manometer will cost more than $3500. Add in the other tools for finding air leaks and you could easily drop over $5000. And then you still need to have some training to understand how to operate and interpret the results. Continue reading “Energy Audit-Homemade Blower Door”
This week, I’m going to start a new category of subject matter to discuss, the tools I own and use when conducting energy audits, assessments and performing home diagnostic testing. We are going to start with my number one diagnostic tool, the blower door. Continue reading “Diagnostic Tools-Blower Doors”
I’ve talked about blower door testing several times on Green Building Advisor and on this blog. This discussion will dive deeper into blower door testing, when it should be completed, the different tests done with the blower door, and interpreting the information. Continue reading “Energy Audit-Blower Door Testing-A Deep Dive”