You have opened up a minefield here.
My yurts are made with 10.10 Sunforger marine canvas, cotton army duck.
Most permenant yurt manufacturers use vinyl etc
We much prefer the cotton because our customer base prefers it and it’s better suited to our
because it’s a more natural product, it’s somewhat breathable and it folds up easy and is more compact.
We get a few customers that adapt my yurts to live in and for these customers I always suggest having a vinyl roof as it’s completely waterproof and will last 10-15 years or more.
Manufactures like it because if this, but also you can cut it and not have to hem the edge like canvas. You can also glue it which is much faster than sewing it. Vinyl or other materials will also last way longer than canvas.
I’m sure if you enquire with the various yurt makers, they will tell you the type and weight of their materials.