1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)
    Caluwe - Passion for Fire and Water ( Pellet and Wood Hydronic and Space Heating)

Lowes is now selling rock wool

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by EatenByLimestone, Aug 15, 2011.

  1. EatenByLimestone

    EatenByLimestone Minister of Fire

    Joined:
    Jul 12, 2006
    Messages:
    4,849
    Loc:
    Schenectady, NY
    I was picking up some spray foam this morning and noticed that that had "stone wool" batts right next to their blown cellulose.

    Hope this helps somebody.

    Matt

    Helpful Sponsor Ads!





  2. Joey

    Joey Feeling the Heat

    Joined:
    Oct 9, 2009
    Messages:
    434
    Loc:
    Northeastern USA/ Dirty Jersey/Ocean County
    Thanx Limestone,,,was just gonna order some rock wool online,,,,will check out my local Lowes first,,,saves on the shipping.
  3. velvetfoot

    velvetfoot Minister of Fire

    Joined:
    Dec 5, 2005
    Messages:
    6,688
    Loc:
    Sand Lake, NY
    Thanks. I thought it was a Canada only thing.
    Which Lowes, if I may ask?
  4. webbie

    webbie Seasoned Moderator Staff Member

    Joined:
    Nov 17, 2005
    Messages:
    12,340
    Loc:
    Western Mass.
    FYI, Rock Wool and the like can often be purchased reasonably at dry wall suppliers.
  5. EatenByLimestone

    EatenByLimestone Minister of Fire

    Joined:
    Jul 12, 2006
    Messages:
    4,849
    Loc:
    Schenectady, NY
    Lowes in Niskayuna. Balltown and Rt 5.

    Matt
  6. velvetfoot

    velvetfoot Minister of Fire

    Joined:
    Dec 5, 2005
    Messages:
    6,688
    Loc:
    Sand Lake, NY
    Thanks!
  7. mhrischuk

    mhrischuk Guest

    I bought Roxul at Lowes in Delaware a couple of weeks ago.
  8. blujacket

    blujacket Minister of Fire

    Joined:
    Oct 2, 2008
    Messages:
    616
    Loc:
    West Carrollton,Ohio
    Special order around here.
  9. Vic99

    Vic99 Minister of Fire

    Joined:
    Dec 13, 2006
    Messages:
    841
    Loc:
    MA, Suburb of Lowell
    They carry it in Woburn, MA as well.
  10. eyefish2

    eyefish2 New Member

    Joined:
    Apr 19, 2011
    Messages:
    73
    Loc:
    UP Mi
    what in the *&^&^% is rock wool used for?? Maybe put an extra sharp bevel on a fillet knife??? Or was that from a fishing site I was on?
  11. Swedishchef

    Swedishchef Minister of Fire

    Joined:
    Jan 17, 2010
    Messages:
    2,393
    Loc:
    Quebec, Canada
    Didn't know you couldn't get it down on the USA...

    Andrew
  12. Swedishchef

    Swedishchef Minister of Fire

    Joined:
    Jan 17, 2010
    Messages:
    2,393
    Loc:
    Quebec, Canada
    Rock wool can be used as an insulate above block off plates, in chimneys, etc. It is a Canadian made product that is (by Canadian building code) an official fire barrier since it is made of: rocks!

    Off of their website "Roxul insulation is non-combustible and withstands up to 1177°C (2150°F). It can act as a fire barrier. Combustible insulation, on the other hand, can fuel the fire and cause it to spread." I saw a home show that left a propane blow torch attempting to burn Roxul all weekend without any success.

    It is sold in bags of various thickness (like fiberglass insulation).

    2 years ago I installed some Roxul ComfortBAtt R14 in my basement walls on top of my spray foam. It is MUCH easier to handle than fiberglass insulation. The best way to cut it is with a serrated knife, just like you would use to cut bread. Works like a charm!!!

    http://www.roxul.com/residential/products/roxul comfortbattâ„¢
  13. turbocruiser

    turbocruiser Feeling the Heat

    Joined:
    Jun 10, 2011
    Messages:
    320
    Loc:
    Rocky Mountains Majesty
    Hmm, so you're saying one could put this right up to the chimney or only that they could put this right up to the insulation shields? I'd like to get the tightest seal possible while passing through levels but I thought that I'd have to live with the little area around the chimney and between the two insulation shields I have here? Thanks.
  14. michaelreinard

    michaelreinard New Member

    Joined:
    Jul 28, 2011
    Messages:
    25
    Loc:
    Eastern PA
    Do they have the loose stuff or the sheets? I bought the 2" sheet for my block-off plate from www.mcmaster.com. The shipping was as much as the sheet.

    Semi-Rigid Mineral Wool Insulation

    With Wire Mesh
    Temp. Range: Mineral wool, 0° to 1200° F; Wire mesh, 0° to 392° F
    Heat Flow Rate (K-factor): 0.23 Btu/hr. x in./sq. ft. @ 75° F
    Density: 8 lbs./cu. ft.
    Color: Green
    Withstands higher temperature than fiberglass. Use indoors or out with metal jacketing. Plain sheets can be cut with a knife. Meets ASTM E84 for flame and smoke. Wire mesh reinforced sheets withstand extreme shock and vibration. Cut with wire shears.
  15. maverick06

    maverick06 Minister of Fire

    Joined:
    Sep 27, 2008
    Messages:
    724
    Loc:
    media, pa
    not sure if this is the same stuff, but i have it insulating my attic (and fiberglass) ugh, what a disgusting product it is. Fiberglass is bad... but rockwool is worse. Gloves, safety goggles, and a p100 respirator are needed to go into the attic. Otherwise i itch and couch for a few days.

    maybe its just me.
  16. Swedishchef

    Swedishchef Minister of Fire

    Joined:
    Jan 17, 2010
    Messages:
    2,393
    Loc:
    Quebec, Canada
    Maverick,

    I don't think you have it....I don't find it itches one bit. As a matter of fact, I have a bag of it open in my basement right now and have no troubles. It's more rigid than fiberglass. Hence why it's good to use a serrated knife to cut it!

    A
  17. mhrischuk

    mhrischuk Guest

    The Roxul I bought was pretty fragile to handle. Where fiberglass insulation holds itself together, Roxul falls apart. If you lay a batt in the middle over your arm and let it fold over it will break in two pieces by itself. Definitely heavier than fiberglass. When stuffing Roxul into spaces, it falls apart into pieces where fiberglass is more like stuffing cotton.
  18. EatenByLimestone

    EatenByLimestone Minister of Fire

    Joined:
    Jul 12, 2006
    Messages:
    4,849
    Loc:
    Schenectady, NY
    I read part of the bag and remember it saying it can be a minor/temporary irritant to eyes/lungs/ etc. I don't remember seeing anything about a respirator. If it was super harmful I'm sure it would say something. I'd probably at least wear a dust mask though.

    Matt
  19. Rob From Wisconsin

    Rob From Wisconsin Minister of Fire

    Joined:
    Nov 20, 2005
    Messages:
    531
    Loc:
    East-Central Wisconsin
    Not cheap at Lowe's - ~ $40 per batt.
  20. mhrischuk

    mhrischuk Guest

    Actually you get a package of 12 batts (3-1/2" x 47") for $40

    That's $3.33 per batt.
  21. Swedishchef

    Swedishchef Minister of Fire

    Joined:
    Jan 17, 2010
    Messages:
    2,393
    Loc:
    Quebec, Canada
    mhrischuk: what kind of roxul were you using? I they make several types. The one I have is the Comfortbatt. And it is not fragile at all. You saw through it with a serated knife like it was a loaf of bread. I would stand it up no problem between my studs. As per directions, compress one edge, put it in between the studs and let it expand. As simple as that. Mine did not fall apart whatsoever. Yes, it is heavier than fiberglass though: it's made of rocks!

    I installed it with and without a mask. Entire exterior perimeter of the basement had Roxul added between the studs on top of spray foam. Without a dust mask, after about 30 minutes I would get an itchy throat IF I tore the roxul and not cut it with the knife. The knife is essential. Tearing any kind of bound fibers will release small amounts of fiber into the air. Cutting through them won't.

    I was lucky to get my bags of batts for $36 tax inc. :)

    Andrew
  22. mhrischuk

    mhrischuk Guest

    This is the type I used and yes it will break in half if supported only in the middle.

    [​IMG]



    In this picture you can see some of it is damaged and coming apart.
    [​IMG]
  23. Swedishchef

    Swedishchef Minister of Fire

    Joined:
    Jan 17, 2010
    Messages:
    2,393
    Loc:
    Quebec, Canada
    HEh. That's the same stuff I am using. I just went to my open bag of it, picked up a piece and balanced it on my forearm. It does want to break due to the weight but it didn't break in half. You can hear the fibers pulling apart in the middle when it bounces.

    I guess it's more fragile than I thought. But since I always stood them up between studs, I never noticed that they could tear in half.

    Andrew
  24. maverick06

    maverick06 Minister of Fire

    Joined:
    Sep 27, 2008
    Messages:
    724
    Loc:
    media, pa
  25. mhrischuk

    mhrischuk Guest

    I know one thing, you can't handle this stuff like regular fiberglass insulation. If you grab an end to pick up the batt you rip it apart.

Share This Page