The water column in rain jackets occupies many outdoor enthusiasts. But what actually lies behind the term? And how do you know when you need clothing and other outdoor equipment with a water column of 10000 or more?
We shed light on the darkness and show you what to look out for. This way, you stay dry in any weather!
What is the water column in rain jackets?
The question "What does the water column actually mean?" is asked by
- Hikers,
- Cyclists
- and other outdoor enthusiasts rightly so.
Simply put, you can say that it determines the waterproofness of your jacket. The higher the water column of clothing and tents, the better the material protects against moisture.
Even if this information might already suffice for you, it's still worth taking a closer look at this special unit of measurement. It makes a big difference if you know the following facts:
How is the water column measured in rain jackets and tents?
The water column in rain jackets and tents is measured by different water pressure. There are various standards. However, the test principle is similarly structured. The outside of the material is exposed to water.
- Initially, no pressure is applied at all.
- This is only gradually increased until the first three water droplets penetrate the membrane to the inside of the rain jacket or tent.
- Depending on the test procedure, either the time or the applied pressure is the focus of the investigation.
- This results in the load limit of 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 water column of 5000 waterproof?
Even if manufacturers are allowed to describe textiles as waterproof with a water column of 5000, this is only conditionally the case. In a light drizzle, you stay dry for a short time.
But if you get caught in a real downpour or are exposed to rain for a longer period, a rain jacket with a water column of 5000 will not withstand it.
First, you will feel it getting damp inside the jacket on the arms. As it progresses, rain will also seep into the rest of the inner material. A water column of 10000 is much more suitable. It keeps you dry even in
In autumn and winter, however, this is not sufficient. . Even in the other seasons, you should therefore opt for a water column of 20000 mm. It guarantees to keep you dry in any rain.
Our 20000 rain jacket also features a water vapor permeability of 10000 mm. This means you won't sweat despite the excellent water column.
Are waterproof rain jackets breathable?
Waterproof rain jackets are conditionally breathable. As the water column increases, the breathability decreases simultaneously. So the higher the water column of your clothing, the worse moisture can penetrate and escape.
Unless the manufacturers use a high-quality PU membrane with BIONIC-FINISH®ECO impregnation - like we do at ALPIN LOACKER. Therefore, we can guarantee you a rain jacket with the best breathability even with a 20000 water column.
What purchase criteria play a role besides the water column?
Besides the water column of a rain jacket, there are other criteria that you should not lose sight of. After all, good functional textiles are characterized by a variety of components. These are:
Processing: The processing plays a crucial role in the wearing comfort. This 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 here.
Pockets: In heavy rainfall, it's not just the water column of your jacket that matters. To protect your smartphone, tissues, and other equipment from moisture as best as possible, the rain jacket should definitely be equipped with an inner pocket.
Hood: If you have decided on a waterproof water column, be sure to pay attention to the size of the hood. Some manufacturers cut them so small that your hairline is not covered. By the way, our rain jacket even fits a helmet inside.
Breathable: The material of your clothing as well as the membrane or coating not only prevent the penetration of moisture. They also determine the breathability.
We recommend a PU membrane with BIONIC-FINISH®ECO impregnation. This gives the rain jacket not only excellent water column and breathability but is also free from harmful substances and chemicals. This is good for you & the environment.
Conclusion
The water column plays a crucial role in rain jackets. Even if a 3000 mm water column can already be considered waterproof, you should choose at least a water column of 1000 mm. To enjoy perfect protection in any weather all year round, we recommend a 20000 mm water column for your jacket.
Expert tip: With the models from ALPIN LOACKER, you are always on the safe side. Our rain jackets are characterized by a high water column with maximum breathability.
FAQ
Are waterproof rain jackets breathable?
Waterproof rain jackets are conditionally breathable. However, the higher the water column, the lower the breathability generally is. Moisture can enter and exit less easily.
A high-quality PU membrane with BIONIC-FINISH®ECO impregnation can ensure good breathability, even with a high water column like 20000 mm.
What is the water column in rain jackets?
The water column is a unit of measurement that indicates the waterproofness of a rain jacket. It indicates how high the water pressure can be before the material becomes permeable. The higher the water column, the better the jacket protects against moisture.
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