Permanent waterproofing is achieved by first coating fabrics with rubber or plasticized synthetic resins, then vulcanizing or baking them.
Not all types of calico fabrics are waterproof, but there are certain waterproof calico fabrics.
Umbrellas are not made from clothing, but from waterproof fabrics.
Some fabrics are waterproof while others are not. Some waterproof fabrics are:Latex or natural rubberGore-TexVinylFluoropolymers
Goretex
water
There are many comfortable, natural feeling options today for waterproof seat covers. Seat covers made out of "waterproof fabrics that are soft and comfortable" are available from SeatShield.com
Umbrellas are made from a synthetic cloth called sail cloth. Several specialty fabrics are made that have a coating on them to make them waterproof.
The best waterproof diaper fabrics for leak-proof protection and comfort for babies are polyurethane laminate (PUL) and TPU (thermoplastic polyurethane) fabrics. These materials are durable, waterproof, and breathable, providing a comfortable and effective barrier against leaks.
Waterproof and water-repellent fabrics materials treated with various substances so as to make them impervious to water. Some examples are: Gore-tex Vinyl Fluoropolymers
To ensure your sewing project remains waterproof, use waterproof materials like specialized fabrics and threads, and employ techniques such as seam sealing, using waterproof zippers, and applying waterproof coatings.
Waterproof fabrics are generally very difficult to sew and need to be stitched by machine instead of by hand. The same qualities that make the fabric resistant to water also make the fabric resistant to the needle and thread.
Fabrics made from wool are wool fabrics.