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    TherMix Chimney Insulation - Approx. 44-lb. Bag

    List Price: $79.99
    Sale Price: $60.95
    You Save: $19.04 (24%)
    In Stock.
    * Usually Ships Same Business Day.
    • TherMix Chimney Insulation
    • 2.4 - 3 cubic feet bag at approximately 44 lb. per bag
    • UL Listed 1777 Zero Clearance insulation for HomeSaver and Ventinox
    See complete product details >>
    Product Details
    Free Venting Design & Quote:
    Manufacturer: TherMix
    Part Number: 18100
    eFireplaceStore Item Number: CPF-18100
    UPC: 633210517725


    • TherMix Chimney Insulation
    • 2.4 - 3 cubic feet bag at approximately 44 lb. per bag
    • UL Listed 1777 Zero Clearance insulation for HomeSaver and Ventinox

    *Venting Requirements: This unit requires venting pipe with an inner diameter of 6 Inches. Please see the Venting Components section on this page for venting pipe that must be used with this unit.

    Thermix insulation is a ready-mix compound that you mix with water and pour in the space between the liner and the masonry chimney. This creates a UL 1777 listed zero clearance insulation that is recommended for use with Ventinox VG, VFT and HiFlex liners as well as other HomeSaver relining pipe. A pour-in insulation can be used when space is too tight to install a blanket-style insulation. One bag holds 2.4-3 cubic feet of mix and weighs approximately 44 lbs.
    Customer Questions & Answers
    5 Questions & 5 Answers
    from CA asked:
    November 18, 2017
    If I use this product, how do I remove the liner if it becomes necessary?
    1 Answer
    The insulation would have to be removed with the liner.
    Brennan W.
    on November 19, 2017

    from Gilmanton, NH asked:
    November 9, 2017
    How much water should you add to one bag of TherMix for a proper mix?
    1 Answer
    For a proper mix, you'll want to use 7-9 gallons of water per bag.
    Kevin E.
    on November 9, 2017

    from IL asked:
    May 20, 2017
    Does this TherMix come in a pre-mixed caulk?
    1 Answer
    As the TherMix arrives in a bag that is mixed with water and poured around chimney liner as insulation when relining a chimney and serves no other purpose, there would be no reason for a pre-mixed tube of caulk to be offered.
    Will M.
    on May 22, 2017

    from WV asked:
    October 19, 2016
    My chimney is 7 x 13 " and I am putting in a 6 inch liner and the chimney is 20 feet long. How many bags will be needed?
    1 Answer
    You will need 4 bags of Thermix if you are using 6" round flexible chimney liner.
    Will M.
    on October 20, 2016

    from St. Clair Shores Michigan asked:
    February 25, 2012
    We have a Natural gas log fireplace. The ceramic tiles have been removed from the surround, and now there is cold air coming in from around the unit. I removed some drywall to inspect the area around the unit , there isn't any. What type of insulation would be the best to solve this problem?
    1 Answer
    Rather than this type of pour in insulation, it would be recommended to seal the space with unfaced fiberglass insulation. It is necessary to keep the insulation from actually touching the sides and back of the unit. You can staple the insulation to the surrounding framing in order to keep it in place. It may also be necessary to gain access to the outside wall to add insulation, as this is most likely the source of the cold air.
    Collin C. - NFI Master Hearth Professional
    on February 27, 2012

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