KÖSTER KB-PUR 214 FLEX | 1000% Ultra Elastic Polyurethane 1K Liquid Waterproofing Membrane

13/07/2026

KÖSTER KB-PUR 214 FLEX | 1000% Ultra Elastic Polyurethane 1K Liquid Waterproofing Membrane

KÖSTER KB-PUR 214 FLEX

KÖSTER KB-Pur 214 FLEX is a single-component polyurethane-based liquid waterproofing product with 1000% elasticity. Thanks to its easy application with a brush, roller, or airless spray gun, it provides practical, economical, and long-lasting solutions for complex waterproofing details. With its UV resistance, high performance across a wide temperature range, and abrasion-resistant structure, it is widely preferred in professional waterproofing applications.

WHAT IS KÖSTER KB-PUR 214 FLEX?

KÖSTER KB-Pur 214 FLEX is a polyurethane-based, single-component liquid waterproofing material with high elasticity. After application, it forms a flexible and durable waterproofing layer on the surface.

Thanks to its up to 1000% elastic structure, it reduces the risk of cracking caused by surface movements and provides long-term protection. It can be applied easily with a brush, roller, or airless spray gun.

PRODUCT FEATURES

According to the technical specifications, the main features of the product are:

  • 1000% ultra-elastic structure
  • Polyurethane-based formulation
  • Single-component structure
  • Easy application with brush, roller, or airless spray gun
  • Economical and long-lasting waterproofing solution
  • Resistant to all weather conditions
  • High resistance against UV rays
  • Temperature resistance between -30°C and +80°C
  • Abrasion-resistant structure
  • Suitable for light pedestrian traffic

APPLICATION ADVANTAGES

  • Effective performance in difficult waterproofing details
  • Adapts to surface movements thanks to its elastic structure
  • High UV resistance against sunlight exposure
  • High mechanical strength
  • Fast and practical application due to its single-component structure
  • Creates a seamless and continuous membrane thanks to its liquid form

COVERAGE

1.50 kg/m²
(Recommended application in 2–3 coats)

PACKAGING

25 kg metal container

FREQUENTLY ASKED QUESTIONS (FAQ)

1. Which equipment can be used to apply KÖSTER KB-Pur 214 FLEX?
It can be easily applied with a brush, roller, or airless spray gun.

2. What is the temperature resistance range?
It maintains its performance between -30°C and +80°C.

3. Does it have UV resistance?
Yes. It is resistant to UV radiation and suitable for outdoor applications.

4. Is it resistant to abrasion?
Yes. It has high abrasion resistance and is suitable for light pedestrian traffic.

5. What is the consumption rate?
For 2–3 coat applications, the total consumption is approximately 1.50 kg/m².