+- Woodnet Forums (https://forums.woodnet.net)
+-- Thread: "Auto-extinguishing quality grade 1" (/showthread.php?tid=7326695)
"Auto-extinguishing quality grade 1" - MsNomer - 01-04-2017
Is this good or bad for flammability of a foam underlayment?
Also: "smoke content 20 SDR
And: "oxygen index 27 Ol
RE: "Auto-extinguishing quality grade 1" - Roly - 01-05-2017
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
RE: "Auto-extinguishing quality grade 1" - Cooler - 01-05-2017
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.