Glenn Herbert wrote: This is probably not an issue for a cushion, as the bench surface should not be getting near those temperatures.
Is there any chance that the cushion is acting as insulation and increasing the temperature under it more than expected?
This is why I'd love to see and actual temperature measurement from under the cushion. If Tiffaney is finding it uncomfortably hot to sit on top of the cushion and if they saw signs of the foam "melting" before adding the wool blanket spacer, that still seems like the temp is too high for whatever reason.
and wrote:
it is a known issue that wood continuously exposed to high heat for a long time (months/years) will slowly break down and eventually be able to char at lower temperatures, like 200 F or so.
Does anyone know if repeated exposure to high heat affects wool the same way? I expect overheated wool isn't as toxic as overheated foam, but so many fabrics are treated with nasty chemicals these days, I worry that even if fire is no risk, could there be off-gassing that people wouldn't notice the smell of?