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  • Can anyone tell me what this flammabilty rating actually means?

    From Chris Green@cl@isbd.net to uk.d-i-y on Mon Apr 27 08:03:16 2026
    From Newsgroup: uk.d-i-y

    I use Plastazote LD33 in various places in my boat and I've been
    wondering how inflammable it is. The data sheet says:-

    Automotive FMVSS.302 rCo Burn rate <100mm/min. Pass at 9mm

    Where FMVSS.302 is the 'test standard'. Can anyone tell me what this
    means in real terms? It looks as if it is acceptable for (some sort
    of) automotive use, if so I'm fairly happy. In many cases it has
    replaced very old (and thus probably rather inflammable) expanded
    polystyrene,
    --
    Chris Green
    -+
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  • From The Nomad@nomad@the.desert.invalid to uk.d-i-y on Mon Apr 27 07:57:43 2026
    From Newsgroup: uk.d-i-y

    On Mon, 27 Apr 2026 08:03:16 +0100, Chris Green <cl@isbd.net> wrote:

    I use Plastazote LD33 in various places in my boat and I've been
    wondering how inflammable it is. The data sheet says:-

    Automotive FMVSS.302 rCo Burn rate <100mm/min. Pass at 9mm

    Where FMVSS.302 is the 'test standard'. Can anyone tell me what this
    means in real terms? It looks as if it is acceptable for (some sort of) automotive use, if so I'm fairly happy. In many cases it has replaced
    very old (and thus probably rather inflammable) expanded polystyrene,

    Chris,

    Does this help?

    <https://begoodtex.com/blog/fmvss-302-automotive-flammability-guide/>

    I've not actually read through it

    Avpx
    --
    "Scum," said Crash, his voice low with resigned menace, "you've bought
    a leopard, haven't you?" (Soul Music)
    Mon 11927 Sep 08:55:01 BST 1993
    08:55:01 up 2 days, 21:30, 1 user, load average: 2.06, 1.96, 1.88
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  • From Chris Green@cl@isbd.net to uk.d-i-y on Mon Apr 27 10:13:31 2026
    From Newsgroup: uk.d-i-y

    The Nomad <nomad@the.desert.invalid> wrote:
    On Mon, 27 Apr 2026 08:03:16 +0100, Chris Green <cl@isbd.net> wrote:

    I use Plastazote LD33 in various places in my boat and I've been
    wondering how inflammable it is. The data sheet says:-

    Automotive FMVSS.302 rCo Burn rate <100mm/min. Pass at 9mm

    Where FMVSS.302 is the 'test standard'. Can anyone tell me what this
    means in real terms? It looks as if it is acceptable for (some sort of) automotive use, if so I'm fairly happy. In many cases it has replaced
    very old (and thus probably rather inflammable) expanded polystyrene,

    Chris,

    Does this help?

    <https://begoodtex.com/blog/fmvss-302-automotive-flammability-guide/>

    I've not actually read through it

    Yes, thank you, it does basically tell me what I wanted to know. The "Automotive FMVSS.302" standard is required for any material used in a
    vehicle that is accessible to the occupants. A burn rate of less than 102mm/minute is required. I think that '9mm' means that Plastazote
    burns at 9mm/minute which is well within the standard. So I'm fairly
    happy using it in the boat some more.

    It's quite expensive compared with some other insulation materials
    (it's not really aimed ot thermal insulation) but it's easy to cut and
    handle, no nosty dust or fibres, it's smooth and acceptable as
    'finish' in less exposed areas such as inside cupboards.

    So maybe I will just stay with Plastazote everywhere rather than
    trying to find something else.
    --
    Chris Green
    -+
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