Is Polyester Waterproof?

3rd January, 2023

Table of Contents

(updated 13/07/2023)

Understanding if Polyester is 100% waterproof will help you make the right decision when choosing the right fabric for your project.

What is Polyester?

A brief explanation but Polyester is a synthetic fibre that is known for its strength, durability, and water-resistant properties.

It is not inherently waterproof, and it will not prevent water from soaking through the fabric.

If want to learn more about it, we have written about it: Discover the amazing properties of Polyester Fabric.

Is Polyester Waterproof?

It is not a highly absorbent fibre, and it will not readily absorb water.

Although having water resistant capabilities, polyester fabric can become wet if it is soaked or exposed to water, and it can retain some moisture.

The amount of water that a polyester fabric absorbs will depend on various factors, such as the thickness and structure of the fabric, the type and blend of fibres used, and the finish applied to the fabric.

Stripes Waterproof Canvas – Polyester

Water-Repellent Outdoor Canvas – Polyester

Waterproof Oxford Pu – Polyester

Making Polyester Waterproof

To make a fabric that is 100% polyester waterproof, it would need to be treated with a waterproof coating or treatment.

This treatment can be applied to the fabric in a variety of ways, such as by dipping it in a solution, spraying it on, or applying it as a finish.

It is important to note that the effectiveness of a waterproof coating or treatment can vary, and it may wear off over time.

In addition, a waterproof coating or treatment may affect the feel and breathability of the fabric, and it may make the fabric less flexible or more stiff.

If you need a waterproof fabric, you may want to consider other materials, such as rubber, PVC, or neoprene, which are naturally waterproof or water-resistant.