Weatherproof refers to garments which are extremely weather resistant, but which cannot be referred to as waterproof, often due to the method of their construction. Waterproof garments are often treated with a waterproofing agent, have a laminated inner layer or have a waterproof drop liner. Waterproof garment seams must also be treated to prevent water penetrating. This is generally known as ‘taping seams’ as a waterproof tape is added at the back of the seam to prevent water ingress through the stitching.

Generally weatherproof garments do not have this taping, so cannot be referred to as being completely waterproof. Weatherproof garments such as traditional Barbour waxed cotton jackets are extremely weather resistant, and providing they are maintained they will keep the worst of the weather at bay. However in some circumstances of prolonged exposure to heavy rain there may be some limited water ingress through the seams or other areas, especially if the waxed coating has not been maintained. Barbour recommend regular use of their Thornproof Wax Dressing in order to keep jackets in tip top condition, they also offer a reproofing service.