02-24-2019, 04:06 PM
(This post was last modified: 02-24-2019, 04:09 PM by danbrotherston.)
(02-24-2019, 03:40 PM)clasher Wrote:(02-24-2019, 12:56 PM)Canard Wrote: Disappointed to see how poorly the trail markings have lasted. These went down in mid September, 2018, so that's about 5 months.
This is most likely because they can't use older style paint that had a lot of VOCs in it... I wonder how much benefit it really is to have paint that flakes off into the environment every season rather than just have one hit of VOCs in the atmosphere every 4-5 years. I have no idea if that is going on here or not but it seems like a lot of road markings don't last long anymore.
I would guess a big benefit, but I'm not an environmental scientist.
Regardless, this isn't that, in this case the markings have come off way way earlier than it should have, there is clearly a failure in application. Even on road surfaces, with cars running on them the current paints last up to 2 years, this has none of that wear, and lasted less than 6 months, and the failure pattern is different than on old road markings. Even the old paints wouldn't have lasted if they weren't applied properly.
It's also the case that the paints do not "flake" off, they wear off into wear particles, if you think the particles of the paint are an environmental problem, just wait until you hear about tires.
I'm not sure of the longevity of the old paints, but if a city wishes to have durable long term markings, they can instead use a thermoplastic application, as is done in many places here. They can (when applied properly) last up to a decade.