R Value and Spray Foam Insulation - Just the Facts!

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Published 2021-03-12
In this video we will go over the ASTM C-518 conductivity test that is the basis for all R value which the building codes have been written for.
Does this test tell us all we need to know for insulating a structure? No it does not. In this video we examine the test, what is left out and what insider info can we glean that will change our decisions.

www.sprayjones.com/

www.monolithic.org/blogs/presidents-sphere/r-value…


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www.walltite.basf.ca/
www.bbb.org/saskatchewan/business-reviews/contract…

www.yellowpages.ca/bus/Saskatchewan/Regina/Spray-J…

All Comments (21)
  • Corporate and government corruption go hand in hand and the monopoly will continue to deceive the public to serve their purposes and maintain a profit from the consumption of energy.
  • Jesus Christ, Mike! You are by far the most thorough explanation of spray foam available! Seriously appreciate you man. Keep up the great work!
  • @theSHEFF
    "There's probably only 2 people watching at this point" 😂😭 Never buying fiberglass again. Thanks for the content. Great work.
  • @BelindaCarr
    Thanks for the shoutout! You've got great content and great explanations. Looking forward to watching your other videos.
  • @airdogg1979
    The only proof I need is those fancy coolers that keep ice for days on end during summer. What insulation do those use? Foam!
  • @chadhartman1040
    Once again well done and explained. It’s hard to believe that this level of misunderstanding continues to infect and hinder important progress in something so relatively simple to demonstrate and understand.
  • Thanks for all the information! I appreciate the time you have taken to explain everything!
  • @FOURCED
    Possibly your Best Work Ever Mike so Thank You Very, Very Much! Your Passion for knowledge and education flowed through that video like cold dense air through a batt.
  • This channel rocks! Sooo many questions answered without having to ask.
  • I find it interesting you mentioned previous older versions of spray-foam and how effective they were; lots of similarities to HVAC refrigerants, ozone depletion and GWP. I anticipate spray-foam will continue being changed for same reasons, but hope it doesn't get to the point we start having an ineffective product. I keep looking forward to more information.
  • @slowsmooth3440
    Mike, JC here I wish I had this video when my father-in-law told me that I was making a mistake by not venting the roof rafters. We ended up spray foaming the roof rafters in a closed system. In the insulation game water Trumps air, air Trumps vapor, and vapor Trumps thermal insulation, the elegant solution that closed cell provides is the continuous control layers preventing water air and vapor ...while providing insulation at the same time. Thanks for giving me hope. People like you help me to think that we might actually survive as a species.
  • Amen brother keep up the good work and fighting for what you believe. Change is slow but I'm glad to see the education that you are providing. Hoping someday code and inspectors will get with the technology.
  • @billwilljulz
    I am soo glad I watched this til the end. We will have the luxury of no inspections for our new home, so I will get to choose my spray foam depth and not be upheld to the insane R49 (attic) that codes enforce. This means more work for me as I now have to figure out what our magic number will be. I have read that 5” or so of open cell is where the diminishing returns start. That is a good starting place as it would fully encapsulate the 3.5” trusses in the conditioned attic. We will also have 2” foam board on the exterior.
  • I love your informative discussion! I always suspected what you just explained. I am building a 2 story gambrell garage with separate 2nd floor and plan on spray foam the entire roof and walls as well as the Underside of the 2nd floor. I was planning on just doing 1 inch due to budget constraints and recieved a quote today for aprox $2600.00 cash. I am waiting until my framing and rough in electrical inspections are completed. Thanks to all your videos I know to ask alot of questions about winter or summer formula and definitely using closed cell. The roof has a cobra vent but I am Not going to ventilate the roof. 32' x 32' x 12' downstairs with 22' x 32' x 8' upstairs. 2 x 6 wall construction with 2 x 12 floor trusses and 2 x 6 roof members. I plan on not continuously heating downstairs garage. But will be keeping the upstairs at a reasonable temperature as I live in Southern Maine it is moderate temperatures but still zone 6.
  • Well, I believe that you have made a fair assessment of the different insulating properties!! Very valuable information an I stayed to the end !!
  • @michaelgray1523
    Great information and video. Really appreciate your hard work. Gives me pride in spraying foam.
  • Great video. You answered a lot of questions I have been mulling over. As I previously stated, I am planning to build in the nest year, and want the house to be very energy efficient. Cannot spend my retirement years worrying about paying the heat and cooling bills. We used to heat our pump house with a lightbulb and sheets of white styrofoam with saw dust in the bottom. Never had the water freeze off in all the years we did that, except once when the bulb burned out.