| FRTW
Wood Is: |
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|
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| Lumber
and plywood that is pressure |
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| impregnated
with a fire retardant chemical to |
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| reduce
the spread of flames, smoke development |
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| and
shows no significant progressive combustion |
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| within a 30
minute test. |
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| Is
there a difference between FR |
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| coatings
and FRTW? |
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|
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| Yes.
FR coatings are tunnel tested for a time |
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| period
of 10 minutes, opposed to FRTW which is |
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| tested for
30 minutes. |
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