3 ms·

>and the fabric covering would need to be replaced every 8-10 years depending on exposure and climate. Absolutely not. I recently drove past my childhood home

>and the fabric covering would need to be replaced every 8-10 years depending on exposure and climate. Absolutely not. I recently drove past my childhood home. The canvas awnings that were there 30 years ago are still there, and look fine. Almost everything else about the house has changed.

dylan604 2y ago
How do you know it was never replaced? If it was the same, I'd be concerned about how much PFAS or other forever chemicals were used
- Aeolun 2y ago
  Canvas has been canvas for an exceedingly long time right? Has anything about it really changed?
  - rascul 2y ago
    Treating canvas for fire and water resistance has been done for a long time for some applications. I don't know what is used for that, though.
    - dylan604 2y ago
      Scotchgard was a PFOS based formula changed to a PFBS formula brought to us by our lovely friends at 3M. https://en.wikipedia.org/wiki/Scotchgard https://en.wikipedia.org/wiki/Scotchgard more info in this PDF https://pfas-1.itrcweb.org/wp-content/uploads/2020/10/history_and_use_508_2020Aug_Final.pdf https://pfas-1.itrcweb.org/wp-content/uploads/2020/10/histor...
- Cthulhu_ 2y ago
  Not everything that lasts is PFAS/forever chemicals, please don't fearmonger.
  - pantulis 2y ago
    Still the question is valid, the canvas colors and patterns are standardized so they are easy to replace. But anyway the discussion is not very relevant as I don't think the cost of replacing the canvas is that much.
  - dylan604 2y ago
    One of the very popular water proofing chemicals was 3M ScotchGard which most definitely was forever chemicals. To just write it off as fearmongering is just head in the sand level of "this is fine" mentality. "Lead paint is fine as long as you don't eat it" type of not caring or thinking the process through very far
Cthulhu_ 2y ago
Yeah they will have a longer lifetime than that, at worst they will start to fade with the year. But, that's UV that's hitting a consumable, instead of your house or things inside of it.
- asdff 2y ago
  Don't windows block UV light anyhow?

dylan604 2y ago

How do you know it was never replaced? If it was the same, I'd be concerned about how much PFAS or other forever chemicals were used

Aeolun 2y ago
Canvas has been canvas for an exceedingly long time right? Has anything about it really changed?
- rascul 2y ago
  Treating canvas for fire and water resistance has been done for a long time for some applications. I don't know what is used for that, though.
  - dylan604 2y ago
    Scotchgard was a PFOS based formula changed to a PFBS formula brought to us by our lovely friends at 3M. https://en.wikipedia.org/wiki/Scotchgard https://en.wikipedia.org/wiki/Scotchgard more info in this PDF https://pfas-1.itrcweb.org/wp-content/uploads/2020/10/history_and_use_508_2020Aug_Final.pdf https://pfas-1.itrcweb.org/wp-content/uploads/2020/10/histor...
Cthulhu_ 2y ago
Not everything that lasts is PFAS/forever chemicals, please don't fearmonger.
- pantulis 2y ago
  Still the question is valid, the canvas colors and patterns are standardized so they are easy to replace. But anyway the discussion is not very relevant as I don't think the cost of replacing the canvas is that much.
- dylan604 2y ago
  One of the very popular water proofing chemicals was 3M ScotchGard which most definitely was forever chemicals. To just write it off as fearmongering is just head in the sand level of "this is fine" mentality. "Lead paint is fine as long as you don't eat it" type of not caring or thinking the process through very far

Cthulhu_ 2y ago

Yeah they will have a longer lifetime than that, at worst they will start to fade with the year. But, that's UV that's hitting a consumable, instead of your house or things inside of it.

asdff 2y ago
Don't windows block UV light anyhow?