Product Introduction
Safe spaces with perfect sealing,
K-Rang waterproof sheets
K-Rang waterproof sheets are a new level of solution for environmental risk management.
From blocking rainwater to preventing harmful animals, this single product solves various challenges on site.
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- Tool-free installation available
- One-person installation without special tools or complex steps.
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- Durable, waterproof material
- Reliable waterproof durability that performs in any condition.
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- Excellent value for money
- Exceptional durability with premium materials allows for multiple repeated uses
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- Easy connection and expansion
- Can be connected as needed to effectively block large areas
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- Proven technology
- Patented pocket structure ensures perfect ground adhesion, completely blocking rainwater infiltration without gaps.
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- Double sealing effect
- Effectively blocks not only rainwater but also intrusion by harmful animals such as wild beasts.
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- Stable structural design
- Firmly secured to the ground by the weight of the contents, maintaining stable blocking performance.
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- Easy to manage and store
- No special maintenance needed; simply empty the contents after use for easy transport and storage
Technology & Patents
Patented technology makes all the difference in trust
Proven by patents, our unique technology cannot be replicated by anyone. With differentiated expertise, we deliver value and build trust.
- Patent No. 10-2798703
- Flood Prevention Waterproof Barrier for Rainwater Ingress Control
Flood Damage Cases
Environmental risks are often overlooked,
so you need to prepare now
If you don’t prepare in advance, unexpected environmental factors can lead to significant losses
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- Fifth flood in 12 years… Gangnam remains helpless despite reputation for heavy rain damage.
- **Newspaper
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- Flooding happens every time it rains, and the reality of having to keep farming is overwhelming.
- **Newspaper
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- "Flooded and trapped" widespread flood damage in Cheongju.
- **Newspaper
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- Fifth flood in 12 years… Gangnam remains helpless despite reputation for heavy rain damage.
- **Newspaper
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- Flooding happens every time it rains, and the reality of having to keep farming is overwhelming.
- **Newspaper
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- "Flooded and trapped" widespread flood damage in Cheongju.
- **Newspaper
Use Cases
Proven practical benefits across diverse application environments, with real, tangible results
Apply directly on-site with minimal preparation for maximum impact.
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# Use cases 01
- Construction site management
- KRang flood barrier effectively blocks external contaminants, rainwater, and soil, protecting construction site operations and preventing delays and structural damage.
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# Use cases 02
- Livestock and Crop Protection
- KRang flood barriers effectively block wild animals, protecting valuable livestock and crops to ensure stable harvests and economic benefits for farmers.
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# Use cases 03
- Flood prevention for homes/buildings
- KRang flood barrier effectively blocks rainwater from entering moisture-prone areas like basements and storage rooms, fully protecting your property from flood damage.
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# Use cases 04
- Water drainage and ground management
- KRang flood barrier prevents soil erosion on unstable slopes and around waterways, directs water flow as needed, ensuring ground stability and enhancing resilience to environmental changes.
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# Use cases 05
- Flood prevention for low-lying factories
- KRang flood barrier protects low-lying factories from flood damage, safeguarding equipment and assets to ensure continuous production during unexpected natural disasters.
Features & Benefits
Be fully prepared with KRang Flood Barrier.
Easily and quickly install without complex steps to see immediate results. Enhance on-site efficiency while reducing time and cost burdens.
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# Point 01
- Perfect ground adhesion
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Filled with contents, the pocket perfectly adheres to the ground, blocking rainwater intrusion and preventing flooding damage in low-lying areas.
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# Point 02
- Strong fence function
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When installed around farmland or construction sites, it acts as a physical barrier preventing wild animals from crossing or breaking through.
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# Point 03
- Excellent durability and waterproofness
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With excellent durability, it maintains strong barrier performance without deformation under any weather conditions.
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# Point 04
- Easy installation and maintenance
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Anyone can easily install and remove it without special tools, saving time and costs.
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# Point 05
- Convenient connection and expansion features
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Nonwoven fabric connections allow flexible expansion, making it suitable for wide-ranging sites.
Product Differentiation
The clear difference that K-Rang and waterproof sheet promise
| Comparing various prevention solutions from sandbags to water cans | |||
|---|---|---|---|
| Products |
 |
 |
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| Storage | Bulky and difficult to store in large quantities |
Compact and easy to store in large quantities |
Compact and easy to store in large quantities |
| Reuse | Reusable but bulky, hard to store and transport, often used once |
Swells like a pillow when absorbing water; must be drained and dried for reuse, which is inconvenient used once or two times |
Can be folded for compact storage, easy to transport, semi-permanently reusable |
| Installation | High transport costs and many people needed for large-scale installation; water may leak through gaps |
Easier to install than sandbags, but long lengths require multiple people; water may leak through bag gaps |
Easy to install even for long lengths by a single person |
| Disposal | Must empty sand from bag before disposal, inconvenient |
Bulky when swollen, inconvenient to dispose |
Compact size makes disposal easy |
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Installation Cost
(Including transport, labor, storage, etc.)
* Based on 100m(W) x 60cm(H) installation |
2,000 sandbags (30cm x 10cm) x 334,000 KRW/100 (based on Coupang price) = 6,680,000 KRW + transport and labor (3–4 people) |
857 absorbent flood bags (70cm x 30cm x 10cm) x 12,900 KRW/each (based on Coupang price, large size) = 11,055,000 KRW + labor (2–4 people) |
20 flood prevention sheets (5m x 60cm) x 299,000 KRW/each = 5,980,000 KRW + labor (1–2 people) |
Comparing various prevention solutions from sandbags to water cans
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Sandbag
- Storage
Bulky and difficult to store in large quantities
- Reuse
Reusable but bulky, hard to store and transport, often used once
- Installation
High transport costs and many people needed for large-scale installation; water may leak through gaps
- Disposal
Must empty sand from bag before disposal, inconvenient
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Installation Cost
(Including transport, labor, storage, etc.)
* Based on 100m(W) x 60cm(H) installation -
2,000 sandbags (30cm x 10cm) x 334,000 KRW/100 (based on Coupang price)
= 6,680,000 KRW + transport and labor (3–4 people)
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Absorbent Flood Bag
- Storage
Compact and easy to store in large quantities
- Reuse
Swells like a pillow when absorbing water; must be drained and dried for reuse, which is inconvenient
- Installation
Easier to install than sandbags, but long lengths require multiple people; water may leak through bag gaps
- Disposal
Bulky when swollen, inconvenient to dispose
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Installation Cost
(Including transport, labor, storage, etc.)
* Based on 100m(W) x 60cm(H) installation -
857 absorbent flood bags (70cm x 30cm x 10cm) x 12,900 KRW/each (based on Coupang price, large size)
= 11,055,000 KRW + labor (2–4 people)
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Flood Prevention Sheet / Animal Barrier Sheet
- Storage
Compact and easy to store in large quantities
- Reuse
Can be folded for compact storage, easy to transport, semi-permanently reusable
- Installation
Easy to install even for long lengths by a single person
- Disposal
Compact size makes disposal easy
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Installation Cost
(Including transport, labor, storage, etc.)
* Based on 100m(W) x 60cm(H) installation -
20 flood prevention sheets (5m x 60cm) x 299,000 KRW/each
= 5,980,000 KRW + labor (1–2 people)
FAQ
Questions about K-Rang Waterproof sheet?
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What kind of product is KRang Flood Barrier?It is a multipurpose safety management solution that simultaneously prevents rainwater intrusion and blocks wild animal entry.
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How does it prevent flooding?When rainwater fills the pockets or the contents are added to secure weight, it firmly adheres to the ground, effectively blocking rainwater inflow.
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How do you maintain it?It can be reused repeatedly after removing moisture and drying.
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What types of environments or situations is it mainly applicable to?It is mainly used in flood-prone areas (low-lying buildings, basements), farmlands, construction sites, and other places needing rainwater control and protection from external intrusions.
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Is the installation process complicated?It's very simple. Just fill the bag with the contents and place it where needed—no special tools required. It can be installed by one person.
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What should I use to fill the contents?Use rainwater or materials like gravel and sand from the site to add weight.
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How should it be stored when it is not in use?Empty the contents, dry it, then fold or roll it up for storage.
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How durable is the product?It is made of high-strength special materials, ensuring long-term stable performance even under various weather conditions and external environments.
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Can it be used in large/open spaces as well?Yes, multiple units can be connected as needed to effectively cover larger areas.
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Is it possible to request special sizes or custom-made options?We offer standard sizes, but custom options may be available for special purposes such as large-volume orders. Feel free to contact us for details.
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