A walk through the process of having open or closed cell foam sprayed to insulate your home. We address popular questions and concerns and show an in-depth look at how the foam is installed.

This movie shares the unique perspective of following a contractor as they insulate a typical basement.

25 Responses to “closed cell spray foam insulation”

  1. Spray Foam March 24, 2011 at 4:38 am #

    What do you do about all the homes that have foam installed, before the new codes forced the foamers to put the “fire coating” on the foams? Although the foams needed the coating before. First of all: 2 inches of closed cell foam is not a moisture barrier or a vapor barrier. Ask this “FOAMER” how many inches deep of closed cell do you need to spray to get to a “Vapor Barrier”, he will not know because he thinks it has “Properties” of vapor barriers? HMMMM? And always have vapor concerns,

  2. viper8red April 16, 2011 at 6:15 am #

    They’re not telling you what this costs because they don’t want you to have a heart attack.

  3. berrypossum June 2, 2011 at 7:21 am #

    I just did the math, and it’s cheaper to buy one thousand “Great Stuff” spray foam in a can from Home Depot. They’re on sale this week, too.

  4. lrd9999 June 19, 2011 at 10:57 pm #

    I’m guessing he means the radiant losses from the contents of the cellar to the thermal mass of the concrete, but I’m no expert on jargon. Yes, I’d think a DIYer could use spray foam from a kit to attach the rigid foam and to seal around it; that should block everything. But I don’t know if it would save anything on a non-DIY job. Wouldn’t want to use GreatStuff (as berrypossum suggested); it’s more dribble more than spray.

  5. d1incharge June 23, 2011 at 12:30 pm #

    Here is advice from a licensed building performance analyst: Any contractor claiming “foam is the best” or that foam can in any way pay for itself in savings, or add any value to your home, is not only too stupid to do fairly simple math, but are crooked for claiming they have done the math and they know it saves money. IT CANNOT POSSIBLY BEAT LOOSE-FILLS, NEVER HAS NEVER WILL. Insulation is ONLY used for R-value, air sealing should be done on the TWO required air barriers in EVERY wall.

  6. TheTxeng July 31, 2011 at 3:34 pm #

    I hope you have better success. But BASF SPRAYTITE has been a closed cell foam from hell for us. An applicator in SC purchased the SPRAYTITE® polyurethane foam materials from a supplier near Charlotte, NC. The applicator applied it in Feb 2011 to our garage ceiling. After a week it started smelling like fish. After five months the applicator removed about 60% of it and resprayed it.

    The new application has less odor. But the garage still smells. I wish we had never used this product.

  7. RandallFlaggNY September 24, 2011 at 3:49 am #

    $8/can * 1,000 cans = $8,000 plus sales tax.

    I think a pro would be cheaper for a 1,000 square feet.

  8. kitfoam December 30, 2011 at 5:43 am #

    Next time you need to insulate something, try us!

  9. BigDsunburst53 January 3, 2012 at 9:22 pm #

    Vapor barriers are never used redundantly because of their perm rating, it would cause a condensation trap between the two. Also,unless the climate zone is always constant vapor barriers will become vapor traps depending the dominant heat gradient. CC foam does not rely on the perm rating of the product, it uses the resistance to static pressure and a low K-value to achieve it’s high ER. The properties of CC foam are the reason you have a frost free refrigerator.

  10. BigDsunburst53 January 3, 2012 at 9:24 pm #

    CC foam will seal any area it is sprayed and will pass the ASTM-E-96 and the ASTM E-2178 @ 1″.

  11. d1incharge January 7, 2012 at 9:49 am #

    Its great when you are limited with space, but in a home you are not. 3.5″ walls allow for R-15 loose-fill/batts, beyond code in many places especially with a continuous insulation on the outside of a wall(more effective /inch than CC foam in a wall by far. Air sealing has to be done to the TWO air barriers in every wall, CC foam is not rated to be exposed on the outsie of a home(where it would penetrate to “seal” outsided walls) UV and water will destroy it.

  12. d1incharge January 7, 2012 at 10:01 am #

    Also in attic applications, insulating the ceiling vs. the roof deck is much more efficient no matter the type of insulation. You can install R-60 loosefill in an attic, but can barely creep by R-30 with spray foam which is also likely installed on the roof deck which is retarded. Condition the attic? Idiots! New homes are too tight w/out foam, both IRC and IECC are requireing mechanical ventilation now, w/out foam. Funny thing, you can get double the R for less $

  13. 1BRWNSKN July 17, 2012 at 3:26 pm #

    I appreciate the contractor representatives honesty regarding the do-it-yourself installation benefits. I want to know more in depth the pros and cons of open to close in laymen terms. How does it affect one’s breathing quality? Although he was rude, I’m trying to understand the logic and expertise in d1incharge’s comment as it relates to my home.

  14. 1BRWNSKN July 17, 2012 at 3:28 pm #

    Could you explain in laymen terms as I am trying to compare what relates to my home being 8 years old.

  15. d1incharge July 22, 2012 at 8:54 am #

    Do you have high energy bills? If you are looking to save more money in energy than what you spend in upgrades the first thing is to find out what you spend on heating and cooling. To know what your heat and cooling costs are you take your lowest annual bill, multiply it by 12. Then you add up your actual 12 months energy bills and find the difference of the two. Also to make better recommendations it might be handy to know your climate zone.

  16. bigadouch October 1, 2012 at 6:53 pm #

    Pretty rough looking 2 lb. job

  17. HomeEnergyNow October 3, 2012 at 12:37 pm #

    There are many factors. What is your climate zone? What part of your envelope are you planning on insulating? If your home was finished just 8 years ago, it is likely no type of insulation will provide a sub 20yr ROI.

  18. Socinus October 21, 2012 at 6:57 am #

    One question; can closed cell foam be used outdoors if its covered by a heavy-duty paint?

  19. Eric D November 20, 2012 at 6:13 pm #

    shure but what is a heavy duty paint? I would recomend spraying a coat of polyurea. Never heard of painting Closed cell foarm.

    Closed cell foam on the outside of the foundation walls all the way down to the footings & spray polyurea to protect it is the best way to go as far as I know, at this time (2012)

    Spray to at least r-13 is best bang for your buck so to speak.

  20. Buchoass November 20, 2012 at 6:57 pm #

    Great video, Great info, Great comments.

  21. JUVENAL RODRIGUEZ December 14, 2012 at 7:29 pm #


  22. otanasivert December 20, 2012 at 6:09 pm #

    If the vapors are toxic, why would the installer NOT protect his head and ears, and why would he wear a suit that does not cover parts of the arm (there was skin between the suit and the glove in the video)?
    Where is the furnace? My understanding is that you can’t spray too close to one, and/or the pipes emanating from the furnace.

  23. carter102 January 30, 2013 at 7:02 pm #

    Building code requires that to be covered with drywall because its highly combustible.
    Also, I’ve seen a few basement where the foundations cracked real nice because the foam insulates very well (no heat escapes below grade, ground freezes and heaves the foundation wall in -Crrrack.

    Great stuff though, works amazing. Not sure about it saving money, usually rigid foam insulation is much cheaper.

  24. TheGanrock March 28, 2013 at 4:11 pm #

    Use BASF Wall tite Eco – the best closed cell foam available. The foam shown here is cheaper low grade quality.

  25. Doug bingham May 31, 2013 at 3:12 pm #

    BASF Wall tite is Not the best closed cell foam available. Its dimensional stability is Not good, which means it shrinks alot when it cools since it creates so much heat when being sprayed, its compressive strength is one of the lowest in the industry and the open cell content within this foam is 8% which is Really high..sooo Not the best no.