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)

Heat tolerance of Fibreglass

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by wg_bent, Jan 13, 2006.

Thread Status:
Not open for further replies.
  1. wg_bent

    wg_bent Minister of Fire

    Nov 19, 2005
    Poughkeepsie, NY
    Resource for this? not faced, just raw fibreglass.

    Helpful Sponsor Ads!

  2. Rhone

    Rhone Minister of Fire

    Nov 21, 2005
    Unfaced fiberglass Melts at around 1100 degrees and I don't know what temp it can catch fire.
    Chimney Fire is 2000+ degrees, so decent chance fiberglass may melt during a chimney fire if in contact with liner.
    Mineral Wool insulation (same technique as fiberglass but different material) melts at over 2100 degrees and will maintain integrity during a chimney fire.

    Lastly, neither stops air flow. If one wants something to stop air flow, use a piece of sheet metal.

    A chimney fire can reach over 2000 degrees inside the liner, the outside during one will be cooler just don't know what the outside would be.
Thread Status:
Not open for further replies.

Share This Page