Waterproof, water-repellent and water-resistant are often used interchangeably on garment labels and product pages, even though they mean three very different things. The difference comes down to how much water a material can actually withstand, and for how long.
In short: water-repellent is a surface treatment that makes raindrops roll off, water-resistant handles light moisture for a limited time, and waterproof keeps water out completely thanks to dense materials, taped seams, and a water column that withstands pressure over time.
In this guide, you'll learn:
The difference between waterproof, water-repellent and water-resistant
What a water column actually is and how it's measured
Which water column levels suit everyday use, rain, and heavy weather
Common mistakes when choosing rainwear
How to choose the right protection for your needs
Water-repellent means the surface of the material is treated so that water doesn't soak into the fabric, but instead forms droplets that roll off. This is usually a DWR (Durable Water Repellent) treatment applied to the surface, rather than a property of the material itself.
Water-repellent garments are typically characterized by:
A surface layer that makes water bead off
No or very low water column rating
Protection that fades with use, washing, and wear
Common on thinner jackets, hats, and bags
Water-repellent works well in light drizzle for a short time, but offers no real protection against sustained rain. As soon as the surface gets saturated or the treatment wears down, the fabric starts absorbing moisture.
Water-resistant sits between water-repellent and waterproof. The material has a denser weave or a lighter coating that allows it to handle light rain for a limited time, but it lacks the full construction required to stay completely sealed.
Water-resistant garments typically have:
Denser woven materials or a lighter surface treatment
Some water column rating, but at a lower level
Seams that are rarely fully taped
Good performance during shorter periods outdoors in light rain
Water-resistant is essentially a middle ground: better protection than water-repellent alone, but not enough for prolonged rain or heavy weather.
What does waterproof mean?
Waterproof means the garment or product is built to keep water out completely, even during prolonged and heavy rain exposure. Achieving this takes more than just a dense material.
A waterproof garment relies on three elements working together:
The material. Densely woven, coated materials, such as PU-coated polyester, don't let water through.
The construction. Seams are taped or welded to seal the small holes that stitching would otherwise create.
The details. Zippers, flaps, and closures are waterproof or covered to prevent water from entering there.
It's the combination of these elements, together with a sufficiently high water column rating, that determines whether a garment truly stays dry in practice, not just on paper.
The difference between the three terms ultimately comes down to how long and how well the material resists water.
Water-repellent is best when:
You only need protection from the occasional raindrop
You're outside for a short time
The garment is mainly used in dry weather with exceptions
Water-resistant is best when:
You expect light rain for a limited time
You move between indoor and outdoor environments
The protection requirements are moderate
Waterproof is best when:
You'll be out in rain for an extended period
You need reliable protection regardless of weather
The activity involves pressure on the material, such as sitting or wearing a backpack
Water column (usually given in mm) is the measurement that describes how much water pressure a material can withstand before water starts penetrating it. The measurement comes from a standardized test in which a tube is placed against the fabric and filled with water. The water column is measured as the height, in millimeters, the water in the tube reaches before the first three drops seep through the material.
The higher the number, the more pressure the material can withstand before it leaks. A water column of 5,000 mm means the material can handle water pressure equivalent to a 5-metre-high column of water before it starts to leak.
Water column levels and what they mean in practiceBelow 3,000 mm – Water-repellent rather than waterproof. Handles drizzle for a short time, but offers no protection against sustained rain.
3,000–5,000 mm – Suitable for light to moderate rain in everyday situations, such as walking and commuting.
5,000–10,000 mm – Waterproof for most everyday situations, including moderate rain, wind, and kids playing outdoors.
10,000–20,000 mm – Handles heavy rain, longer time outdoors, and pressure from things like backpack straps. A common range for outdoor jackets and rainsuits.
20,000 mm and above – Very high waterproofing intended for extreme conditions, prolonged exposure, and high pressure, such as expedition use.
One common mistake is assuming water-repellent means the same as waterproof. The difference usually becomes clear after a while in the rain, when the surface treatment stops holding up.
Another mistake is only looking at the water column number without considering seams and zippers. Even a high water column rating won't help much if the seams aren't taped, since water can then get in through the stitching holes.
Many also forget that the DWR treatment on water-repellent and water-resistant materials wears off over time and needs to be renewed to keep working.
Finally, it's easy to choose a higher water column rating than actually needed, which often means a stiffer, heavier, and more expensive material than necessary for everyday use.
The right protection depends on how and where the garment or product will be used.
Key factors to consider:
Use: Everyday wear, commuting, or longer time outdoors call for different requirements.
Activity level: Higher activity increases the need for breathability, not just waterproofing.
Weather: Consider how often you're actually out in rain, and how heavy it usually is.
Construction: Taped seams and sealed zippers matter just as much as the water column number.
Care: Regular reproofing extends the lifespan of water-repellent surfaces.
Are waterproof and water-repellent the same thing?
No. Water-repellent is a surface treatment that makes water bead off for a short time, while waterproof means the material, seams, and construction together keep water out completely.
What's a good water column for a rain jacket?
5,000–10,000 mm is usually enough for everyday use. For heavier rain, wind, or outdoor activities, 10,000–20,000 mm is a safer choice.
Does water-repellent material hold up in heavy rain?
No. Water-repellent material protects against light drizzle for a short time, but lets water through during sustained or heavy rain.
Can you make a water-repellent garment more waterproof?
Regular reproofing can restore the surface's ability to repel water, but it doesn't give the garment a water column rating or taped seams. The difference compared to a truly waterproof garment remains.
Do kids' clothes need a high water column?
Not necessarily. For playing in rain and puddles, 5,000–10,000 mm is usually enough, combined with taped seams at cuffs and hems.
Does it matter if the seams aren't taped, even with a high water column?
Yes. Water can get in through unsealed stitching holes regardless of how high the water column rating is, which makes taped seams essential for a truly waterproof garment.
How often should you reproof a water-repellent or water-resistant garment?
It depends on use, but a good rule of thumb is to reproof once water stops beading on the surface and starts soaking into the fabric instead.
Understanding the difference between waterproof, water-repellent and water-resistant is less about finding the highest number and more about matching the protection to how you actually use the garment. With the right combination of material, water column, and construction, you get a garment that stays dry when it really matters.