Waterproof vs. Water Repellant - Thermal Control Products
Sep 15, 2014·Waterproof vs. Water Repellant Sep 15, 2014. Thermal Control Products is often asked the difference between Water Proof and Water Repellant fabric and here it is:. Waterproof is the ability of the fabric to keep water from permeating through (the fabric). It is a nonporous fabric designed to keep you dry in the heaviest of rain.