UKS Bituminous Membranes | APP & SBS Modified Waterproofing Systems

03/07/2026

UKS Bituminous Membranes | APP & SBS Modified Waterproofing Systems

UKS Bituminous Membranes

Developed by UKS Yapı, UKS Bituminous Membrane Systems provide reliable waterproofing protection for building components exposed to water, from foundations to roofs. Available in both APP-modified and SBS-modified versions, these membranes offer effective solutions for a wide range of climate conditions and project requirements.

Waterproofing plays a critical role in extending a building's service life and structural durability. Choosing the right membrane for foundations, basements, terraces, and roofs significantly reduces the risk of moisture intrusion, water leakage, and long-term structural damage.

What Are UKS Bituminous Membranes?

Bituminous membranes are asphalt-based waterproofing sheets manufactured in roll form and typically installed using a torch-on application method. UKS offers both plastomeric (APP) and elastomeric (SBS) modified membranes to meet the demands of hot and cold climate conditions.

With excellent flexibility, durability, and long service life, these membranes are available with different reinforcement types and surface finishes to suit a wide variety of waterproofing applications.

Types of UKS Bituminous Membranes

APP-Modified Membranes

  • Plastomeric bitumen formulation
  • Excellent resistance to high temperatures and UV exposure
  • Commonly used on terraces and roofing systems

SBS-Modified Membranes

  • Elastomeric bitumen formulation
  • Maintains flexibility at low temperatures
  • Ideal for foundations and retaining walls

Polyester-Reinforced Membranes

  • High tensile and tear strength
  • Excellent resistance to mechanical stress and impact

Glass Fiber-Reinforced Membranes

  • Lightweight and economical solution
  • Easy to install
  • Suitable for a variety of standard waterproofing applications

Applications

UKS Bituminous Membranes are suitable for:

  • Flat and pitched roofs
  • Terraces
  • Foundations and basement retaining walls
  • Water tanks and swimming pools
  • Bridges and viaducts
  • Roof gardens and podium decks
  • Parking decks

Installation Process

1. Surface Preparation

The concrete substrate should be clean, dry, and level.

2. Primer Application

Apply a bitumen-based primer to improve membrane adhesion.

3. Membrane Installation

The membrane rolls are heated using a propane torch and bonded directly to the substrate.

4. Overlapping Joints

Adjacent sheets should overlap by at least 10 cm to create a continuous waterproof barrier.

5. Protective Layer

In areas exposed to sunlight, mineral-finished membranes or a protective concrete layer should be used.

Why Choose UKS Bituminous Membranes?

Excellent Waterproofing Performance

APP and SBS modified membranes create a highly effective barrier against water penetration.

Flexibility and Durability

SBS-modified membranes retain their elasticity even at low temperatures, reducing the risk of cracking.

UV and Heat Resistance

APP-modified membranes provide outstanding performance in areas exposed to prolonged sunlight and high temperatures.

Easy Installation

Standard torch-on installation techniques allow for fast, reliable, and efficient application.

Wide Product Range

Various thicknesses, reinforcement materials, and surface finishes are available to meet different project requirements.

Installation Considerations

For optimal performance:

  • Ensure there is no standing water on the substrate.
  • Apply the primer evenly according to the substrate requirements.
  • Heat the membrane uniformly during torch application.
  • Carefully inspect all overlaps to ensure complete bonding.

Frequently Asked Questions

What is the service life of UKS bituminous membranes?

When properly installed, they typically provide a service life of 25–30 years.

Should I choose APP or SBS membranes?

APP-modified membranes are generally recommended for hot and sunny climates, while SBS-modified membranes are better suited to colder environments because of their superior flexibility.

How many membrane layers should be installed?

A two-layer waterproofing system is commonly recommended, although the final specification depends on the project's design requirements.

What thickness options are available?

UKS membranes are available in thicknesses ranging from 1.5 mm to 4 mm.

Which reinforcement type offers greater durability?

Polyester-reinforced membranes provide superior mechanical strength, while glass fiber-reinforced membranes are often preferred for more economical waterproofing solutions.

Conclusion

UKS Bituminous Membrane Systems offer dependable waterproofing performance, long service life, and excellent durability for residential, commercial, industrial, and infrastructure projects. By selecting the appropriate membrane type and ensuring professional installation, buildings can be effectively protected against water damage for decades.