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01-04-2017, 05:06 PM
(This post was last modified: 01-04-2017, 05:07 PM by MsNomer.)
Is this good or bad for flammability of a foam underlayment?
Also: "smoke content 20 SDR
And: "oxygen index 27 Ol
Carolyn
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As I understand the oxygen index is how much oxygen is needed to support continuous combustion. Normal atmosphere is about 20.9% , the 27 means it will need more oxygen (27 %) to support continuous combustion. So it will not continue to burn on its own in a normal atmosphere. I do not know about the smoke rating. Roly
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Also note that some products labeled as "self-extinguishing" are only so if used in the horizontal position. When used in walls they may not be self-extinguishing.
There are separate standard for walls and floors/ceilings.
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