The water column rating of rain jackets is a hot topic among outdoor fans. But what exactly is behind the term? And how do you know when you need clothing and other outdoor equipment with a water column of 10,000 mm or more?
We’ll shed some light on the subject and show you what to look out for. That way you’ll stay dry in any weather!
What is the water column rating on rain jackets?
The question “What does the water column actually mean?” arise
- Hikers,
- Cyclists
- and other outdoor enthusiasts feel right at home.
Put simply, you can say that this, via the The waterproofness of your jacket is crucial. The more the higher the water column of clothing and tents, the the better the material protects from moisture.
Even if this information is already enough for you, it’s still worth taking a closer look at this special unit of measurement. It’s pretty impressive when you know the following facts:
How is the water column of rain jackets and tents measured?
The Water column rating for rain jackets and Camping is achieved by measured under different water pressure. There are different standards for this. The basic test principle, however, is similar. The outer side of the material is exposed to water.
- At the beginning, no pressure is applied at all.
- The pressure is only gradually increased until the first three drops of water pass through the membrane to the inside of the rain jacket or tent.
- Depending on the test method, either the time or the applied pressure is the focus of the examination.
- This results in the load limit for water permeability.
The following rule of thumb applies:
0.1 bar (pressure) = 1000 mm water column
0.2 bar (pressure) = 2000 mm water column
etc.
Example: Is a rain jacket with a 5,000 mm water column waterproof?
Even though manufacturers are allowed to label textiles as waterproof with a water column of 5,000 mm, this is only partially true. In a light drizzle you stay for dry in a short time.
But if you invest in a proper downpour if you get caught in heavy rain or are exposed to it for a longer period, a Rain jacket with 5,000 mm water column the cannot withstand.
First you’ll feel it getting damp inside the jacket at the arms. As time goes on, rain will seep into the rest of the inner material as well. A water column of 10,000 is far more suitable. It keeps you warm even when you’re c.
In the autumn and winter however, this is not sufficient. Even in the other seasons, you should therefore opt for a water column of 20,000 mm. It will keep you dry in any rain.
Our 10.000 m rain jacket also features an Water vapour permeability of 10,000 mm. This means that despite the excellent water column, you won’t start sweating.
Are waterproof rain jackets breathable?
Waterproof rain jackets sind limited breathabilityAs the water column increases, breathability decreases at the same time. So the higher the water column rating of your clothing, the less effectively moisture can pass in and out.
Unless manufacturers use a high-quality PU membrane with BIONIC-FINISH®ECO impregnation – as we do at ALPIN LOACKER. That’s why we can guarantee you a rain jacket with excellent breathability even with a 10,000 mm water column rating.
What purchasing criteria, besides the water column, play a role?
In addition to Water column of a rain jacket still play other criteria also play a role, which you shouldn’t lose sight of. After all, good functional textiles are defined by a variety of components. These include:
Workmanship: Workmanship plays a decisive role in how it feels to wear. It also determines the lifespan of your rain jacket.
Zipper: The highest water column of a rain jacket is useless if the zippers are not properly sealed. Be sure to look for a two-way front zipper as well.
Pockets: In heavy rain, it’s not just the water column rating of your jacket that matters. To protect your smartphone, tissues and other equipment as effectively as possible from moisture, your rain jacket should definitely be equipped with an inside pocket.
Hood: If you’ve decided on a waterproof jacket with a certain water column rating, be sure to pay attention to the size of the hood. Some manufacturers cut it so small that your hairline isn’t covered. On our rain jacket, by the way, a helmet even fits underneath.
Breathable: The material of your clothing and the membrane or coating not only prevent moisture from penetrating. They also determine breathability.
We recommend a PU membrane with BIONIC-FINISH®ECO impregnation. This gives the rain jacket not only an excellent water column and breathability, but also makes it free from harmful substances and chemicals. Good for you and the environment.
Conclusion
The water column plays a crucial role in rain jackets. Even though a 3,000 mm water column can already be described as waterproof, you should choose a water column of at least 10,000 mm. To enjoy perfect protection in all weather conditions all year round, we recommend a 20,000 mm water column for your jacket.
Expert tip: With ALPIN LOACKER models you’re always on the safe side. Our rain jackets stand out for their high water column combined with maximum breathability.
FAQ
Are waterproof rain jackets breathable?
Waterproof rain jackets are only partially breathable. As a rule, the higher the water column, the lower the breathability. Moisture can move in and out less easily.
However, a high-quality PU membrane with BIONIC-FINISH®ECO impregnation can ensure good breathability, even with a high water column such as 10,000 mm.
What is the water column rating on rain jackets?
The water column is a unit of measurement that indicates the waterproofness of a rain jacket. It specifies how much water pressure the material can withstand before it becomes permeable. The higher the water column, the better the jacket protects against moisture.
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