Is polyester waterproof? The real question is: is any material really waterproof? The short answer is no, at the very least not 100%.
Many times people will throw across the terms waterproof and water-resistant as if they’re interchangeable. But they don’t really mean the same thing.
There exists a major difference between waterproof and water-resistant. Creating something which can be called waterproof is influenced by the materials and construction techniques used.
The expenses of fabricating waterproof apparel are very high and usually prohibitive. One of many techniques used is called ultrasonic welding, which takes great skill and is extremely expensive. Essentially this approach enables the joining of non-synthetic fibers without the need for thread that may compromise the waterproof ability of the material. This technique is used only on items that must be absolutely 100% waterproof.
However, polyester is recognized as water-resistant. In fact, it’s one of many two most common forms of water-resistant fabric along side nylon.
What Fabric Can Be Called Waterproof?
When we head to the nearest store and locate a section with outdoor clothing, we will have how varied it is. Some items labels say those are water-resistant, others state that the apparel is waterproof. We could even find weatherproof clothing!
Why is this? It’s related to how tightly the fibers are woven together. Polyester can also be considered “everyday waterproof ,” which means although it’s not 100% waterproof , it’s protective enough for most everyday situations, such as for example being out in rain or snow, however, not completely submerged under water for a prolonged period of time.
The threads that make up polyester materials are considered waterproof , nevertheless when woven together, the general garment is not. The reason being to be able to achieve complete waterproofness, a garment’s seams must be completely sealed utilizing a technique like these ultrasonic welding. A traditional seam won’t do the trick. All zippers and entry points must be accounted for as well. You can also read Is Nylon Waterproof?
Being water resistant implies that how a polyester material is constructed is extremely dense. Contemplate it in this manner – the less holes something has, no matter how big or small, the more water resistant it’s and the dryer you’ll remain. A heavy fabric and construction means it takes more time for water to seep in.
So, is polyester waterproof? Not exactly, it’s not a naturally waterproof fabric. However, it’s water-resistant and can provide the perfect solution to an early-season chill or pop-up drizzle during the final stretch of the game.