Why I Bought 15000 mm Waterproof Jacket?

Waterproof jackets are categorized under waterproofness and breathability levels. 15000mm is the one waterproofness level for waterproof fabrics. Normally I do traveling 2-3 times per month. So I needed to buy a waterproof jacket. I had to do separate research to buy this. Because there are so many things we have to consider when we buy this, I can line up all in detail below. I hope everything will be highly useful when you buy 15000 mm Waterproof Jacket.

In general, 15000mm rainproof and waterproof jackets are designed for moderate rain, average snow, and light pressure. Considering all factors, a 15000mm jacket is enough for the rain and weather conditions to be faced in day-to-day usage.

Selecting 15000mm is the best solution for my purpose. So if you are seeking more or less than that, I hope this guide will be useful for you. With my researched sources, I can easily help you. Let’s move on to the topics.

Best Reasons for Buying 15000mm Waterproof Fabric

My 15000mm waterproof jacket

In my daily routine, I go walking, running, etc. So most of the time, I have to stop my routine due to rain. So I am looking for a rainproof object science a month. I am so excited when I bought this. There are so many considerations to be considered when buying this. All these depend on the waterproofness as well and the breathability of the fabric.


Waterproofness is a way of measuring the water quantity leaking through the fabric. Considering the waterproofness, it is measured with the static water column test. 1-inch diameter vertical tube is filled with water, and the lower side is closed with tight fabric. When water is filling, the hydrostatic pressure is increased.

When it reaches a maximum, it will leak through the fabric. This is done with pressuring water through a machine, which applies the same hydrostatic pressure. This is an ASTM method used internationally. According to the resistance of pressure, fabrics are categorized.

More than waterproofing, there are water repellent, water-resistant fabrics. All have different characteristics. So it is important to know about Water Repellent Fabrics Vs Waterproof Fabrics

Water Column Test

If you love the environment, you can try these 07 Best Eco-Friendly Waterproof Fabrics.


This is another thing you can meet when you are buying waterproof fabric. I will explain this with a small experiment. If we have to spend in the fully covered glass box, it is impossible. We are sweating and too much heating within few minutes. But if there are small holes, air can transfer inside and outside. It is somewhat good. So breathability is similar to this.

Breathability is a measurement of vapor transferring internally and externally. Normally the human body is produced heat and vapor. According to the task you do, it depends. So if you work hard, there will be more heat and vapor. So wearing a waterproof fabric, you should be comfortable. Hence breathability is more important.

If you wish to buy a waterproof fabric, these 09 Best Waterproof and Breathable Fabrics will be the best available in the market.

Effect of Human Workrate and Perspiration Rate

precipitation and 15000 mm waterproof jacket
Mountain climbing produces more than 20,000 g/m2 of precipitation. Hence you need higher breathability jacket

The term ‘breathable fabric’ implies that it is capable of allowing moisture transfer through its cross-section. Naturally, all textile fabrics are expected to be capable of breathing unless they are specially treated in some way. A typical treatment is the addition of a waterproof layer/coating, which functions to stop water (liquid) from coming in or going out.

In the case of developing waterproof and breathable fabrics, the waterproofing treatment should not cause the elimination of a fabric’s breathing ability. Hence, the characteristics of a waterproof shell should be adjusted to allow the transmission of water vapor to make it breathable and waterproof.

When you work continuously, with jacket, inside pores will covers and clog due to dirt of the body. So pores will pass air actively. Hence you need to wash the waterproof jacket using these 07 steps and reactive the waterproofness and breathability again.

Considering heat production and vapor production of the human is the way to design as well as select the waterproof jacket. Normally a person with no activity energy expended 50–60 W/m2. The work rate of a person may increase to 100W while engaged in normal routing indoor activity. Below is the activity and corresponding precipitation rates of human.

Human precipitation rating and work rate Source: Waterproof and Water Repellent Textiles and Clothing by John T Williams (z-lib.org)

According to this table, you can see daily perspiration rating is an essential factor for breathing. If you do the same task, such as gentle walking, it will emit 7550-7600 g/m2 per day. So when you select a waterproofing fabric for this task, its breathability should be more than or equal to this rate.

When we consider this related to waterproof shoes, high breathability will cool the feet and lower breathability will create problems such as blistering. So it is important to know about these factors and choose the right waterproof fabric well.

The Classes of Breathability and Waterproofness Levels

Waterproof Value

According to the hydrostatic head test, there are levels of waterproofness. So when you select a waterproof jacket, please refer to this. This will exactly grab you the required waterproofness and suitability of the product.

Waterproof rating
hydrostatic head (mm)
Resistance ProvidedWeather Conditions
0–5000 mmNo resistance to some
resistance to moisture
Light rain, dry snow, no
6000–10,000 mmRainproof and waterproof
under light pressure
Light rain, average snow,
light pressure
11,000–15,000 mmRainproof and waterproof
except under high pressure
Moderate rain, average
snow, light pressure
16,000–20,000 mmRainproof and waterproof
under high pressure
Heavy rain, wet snow,
some pressure
20,000 mm overRainproof and waterproof
under very high pressure
Heavy rain, wet snow,
high pressure
Source: Waterproof and Water Repellent Textiles and Clothing by John T Williams (z-lib.org)


According to the work rate, a vapor is generated. The generated vapor should be removed from the air. So you must select a waterproof jacket with breathability. There are ranges for this.

RangePerformance (g m−2 d−1)
Moderate10,000 to 20,000
Breathability Classification

How to Select the Best Waterproof Jacket?

Selecting the best waterproof jacket depends on the expected waterproofness level and your work rate. According to the work rate, breathability should be selected. List your expected work rate and perspiration rate according to that select the breathability of the jacket.

What is a Good Hydrostatic Head Rating?

Hydrostatic head for waterproofness is more than 20,000mm, and breathability between 10,000 g m−2 d−1to 20000 g m−2 d−1 is very good for outdoor usage. It is rainproof and waterproof under very high pressure and stays in heavy rain, wet snow, and high pressure.

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Owner Randy Organ

Randy Organ

I am Randy Organ, a researcher as well as 10 years experienced technician for home construction. My hobby is studying new problems and seek well technical and modern solutions. Water is an invaluable resource. But it hurt much more to many more industries. Structures and electrical are a few of them. Here I try to find ways and solutions for the water leaking