What are the types of waterproofing?
One of the first, and most obvious, things to consider when buying a waterproof jacket is just how good it is at keeping the rain out. The biggest factor that differentiates a budget waterproof jacket from a more expensive one is the kind of technology it uses to keep you dry. The best waterproof jackets will use a combination of different techniques to maximise performance and help you have a positive outdoor experience regardless of the weather…
Water repellent technology: explaining DWR
Durable Water Repellent, or DWR, is a commonly used water repellent technique to help prevent fabric from absorbing moisture. You can tell if a jacket has this coating because water will bead up on the surface of the fabric and trickle off, rather than soak in.
However, on its own, a DWR coating is typically not enough for a raincoat to be considered fully waterproof – you would still get wet if all your clothing had was this. Instead, a DWR coating needs to be combined with either specially designed waterproof fabrics, or waterproof membrane technologies to keep you dry…
Jackets with a waterproof fabrics
Many of the best waterproof jackets will be treated with a DWR coating on top of a waterproof fabric. Some manufacturers use their own waterproof fabric technologies to help them create effective outdoor gear, with some examples including:
- Isotex (Regatta).
- Texapore (Jack Wolfskin).
- HydroDry (Sprayway).
- HydroShell (Berghaus).
- AquaDry (Craghoppers).
These fabrics will have a range of qualities, such as breathability, waterproofness, insulation etc, which can affect which one is right for you. To choose the best jacket, read through the specifications before you buy, or contact our team for help.
One point you should know however, is that jackets with DWR-coated waterproof fabrics tend to be less expensive. This may be better for your budget, but it can also lower breathability, and these jackets will require regular re-proofing to ensure you stay protected (see more about this below).
Jackets with a waterproof membrane
Alternatively, some of the best lightweight waterproof jackets contain what’s known as a waterproof membrane. This is a thin layer of microscopic pores that are big enough to let moisture out, but small enough to prevent rain droplets from getting in.
One of the advantages to this is that a breathable membrane will provide much more internal moisture control, because it will allow sweat to escape. This helps to prevent that uncomfortable clammy feeling, which is ideal if you’re planning something more strenuous than a casual weekend walk.
GORE-TEX® is easily the most recognisable and widely used membrane, supporting huge brands such as Berghaus, Mountain Equipment, Sprayway, Craghoppers and many more.
Want to learn more about this technology? Find Everything You Need to Know About Gore-Tex® with Winfields.
Waterproof fabrics vs membranes
It’s worth noting that there is a distinct difference between waterproof fabrics and membranes. Waterproof fabrics rely on the outer layer protecting you from the elements, while waterproof membranes are fused between an inner and outer layer of fabric for optimal performance.
This additional level of processing is why waterproof jackets using membrane technology tend to be a little more expensive than other options. Effectively, if you’re looking for a general coat to wear from day to day, waterproof fabrics will be sufficient. But, if you’re looking for more enhanced comfort and protection, you should consider investing in a quality rain coat with waterproof membranes for peak waterproofness.
Top tip: fabric and construction play a big part in making sure your jacket is waterproof – and another key aspect of your jacket is taped seams (which you can learn more about below).
Excellent article, but I'm still slightly confused. I do 2 regular walks of 8 to 10mls each week, which in most cases are quite strenuous & I sweat like the proverbial pig, in fact I do likewise, when just walking into town 3mls away. But on my group walks I don't like to have too much clothing on, a "T" shirt & a light fleece I find is ample. But I still sweat even when a waterproof is not worn. Consequently I freeze when we stop for a lunch break. So what would you recommend I wear next to my skin to lessen this?
Also what is your feeling on the so called 100% Polyester Waterproof Breathable Jackets for when it rains.
Thank you for your time & I look forward to your reply.
Kind regards
B Jarvis
You'll sweat when you wear a t-shirt because cotton isn't very breathable and so doesn't let heat or moisture escape easily. It absorbs moisture rather than wicking it away, and it's this that makes you cold. We'd recommend wearing a baselayer against your skin - and you can find out more on this in our guide to layering clothing. Hopefully this helps!