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bead insulation+fire risk

  • 25-07-2012 12:19am
    #1
    selfbuildsoon
    Registered Users, Registered Users 2 Posts: 53 ✭✭


    We plan on insulating our cavity with the bead insulation. Our stove pipes are running through a cavity wall and as the bead is combustible, is this safe?


Comments

  • #2
    archtech
    Registered Users, Registered Users 2 Posts: 1,046 ✭✭✭archtech


    I assume your reference to running through the cavity means that the flue crosses the cavity horizontally(bridging the cavity) at one point. If this is the case an insulated liner should be provided at the crossing point which will address the issue. An important thing to note with bonded bead insulation is any wiring either in the cavity or bridging the cavity needs to be protected by protective sheating/ducting.


  • #3
    selfbuildsoon
    Registered Users, Registered Users 2 Posts: 53 ✭✭selfbuildsoon


    Thanks archtech. It's pipes from the stove that are running from the stove,through the cavity to the hot press.


  • #4
    sas
    Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    selfbuildsoon wrote: »
    Thanks archtech. It's pipes from the stove that are running from the stove,through the cavity to the hot press.

    So you are talking about pipes passing through an internal wall or are you saying that you have pipes running "in" the cavity to get from 1 part of the house to another?


  • #5
    selfbuildsoon
    Registered Users, Registered Users 2 Posts: 53 ✭✭selfbuildsoon


    It's pipes from the stove running in the cavity to get from one part of the house to another as our living room is built onto the side of the house(external wall).


  • #6
    sas
    Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    So you are concerned about hot water pipes being a fire risk?

    If that's the case I think you're ok.

    I'd be more concerned that those pipes could be meandering through that cavity losing heat to outside and possibly at risk of freezing.


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  • #7
    sydthebeat
    Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    selfbuildsoon wrote: »
    We plan on insulating our cavity with the bead insulation. Our stove pipes are running through a cavity wall and as the bead is combustible, is this safe?

    pipes or flues?


  • #8
    sas
    Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    sydthebeat wrote: »
    pipes or flues?

    Pretty sure he covered that in post 3. It appears to be hot water pipes given that it's through the cavity to a hotpress.


  • #9
    sydthebeat
    Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    sas wrote: »
    Pretty sure he covered that in post 3. It appears to be hot water pipes given that it's through the cavity to a hotpress.

    thanks sas, yeah i should have picked that up ;)

    Theres certainly no fire rick IMHO, but no harm in insulating them anyway.

    Polystyrene melts around 240 degrees celsius.


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