Nope. Materials vary depending on: Type of fabric Fiber thickness (denier) Type of thread and stitch used for seams Fiber type for ripstop grids At some point, based on the surface area, expected winds, snow loads, and other forces, stronger materials aren't necessary. Ripstop is common and has many advantages, such as added strength, and resisting the spread of tears once started. However, it's not the only viable option.