What makes an awning waterproof ?

Most high quality patio awning fabrics are not fully waterproof but they are highly water resistant and designed to cope well with typical UK rainfall.

The most important factor is not just the fabric, but the installation. A minimum pitch of at least 14 degrees is essential to allow rainwater to run off quickly. When this is achieved, a quality awning can handle light to moderate rain in line with its wind rating (typically wind class 2, Beaufort scale 5).

Fabric tension also plays a key role. The tighter the fabric, the less chance there is of water pooling. If water is allowed to collect, the weight can quickly build up, leading to stretching or permanent damage, regardless of how water resistant the material is.

For fully waterproof performance, specialist coated fabrics are available, but these are usually used on more robust, supported systems. These often feature side channels or zip-guided designs that keep the fabric securely tensioned across the width, helping prevent sagging and improving rain performance. These are generally referred to as ‘Retractable Pergolas’.

Fabric quality varies significantly, with leading European manufacturers such as Markilux, Weinor, Lewens, Dickson Constant and KE producing some of the most advanced and durable awning materials available today.

For advice on the best fabric and system for your needs, call 01933 448844 or email enquiries@samsonawnings.co.uk.