Rebecca Norman wrote:This is such a great idea! But in my experience, plastic bottles deteriorate in the sun, and many uses of rope are outside, so it seems a little risky
They are highly resistant to sun exposure without damage and especially the colored green or brown bottles have UV protection added for UV sensitive drinks.
I collected manny ,probably tons of plastic bottles from the Danube river and otther rivers and not a single bottle had show signs of sun damage ( ultraviolet damage).
Somme of the bottles ive collected were more than 25 years old based on the design ( had flat bottom without the 5 bumps and a black cap added on the bottom) and were transparent.
Its a highly resistant plastic to sun radiation in a thin stip but in a rope its much more resitant.
For same thickness i think its more resistant than ( longer lifespan use), galvanised steel rope or any rope made for plant matter .