10/07/2026
In cold climates, waterproofing is not only about preventing water penetration; it is also essential for the material to maintain its flexibility under low temperatures. SBS (Styrene-Butadiene-Styrene) modified bituminous membranes provide long-term protection by reducing the risk of cracking in cold weather conditions.
The 2 mm –15°C SBS modified bituminous membrane is a preferred solution for projects requiring lightweight insulation, cost efficiency, and flexibility performance down to –15°C. Thanks to its lightweight structure and cold weather resistance, it is especially suitable for applications where low load and reliable waterproofing are required.
What is a 2 mm –15°C SBS Modified Bituminous Membrane?
This product is manufactured by modifying bitumen with SBS (Styrene-Butadiene-Styrene). The SBS additive prevents the membrane from becoming brittle at low temperatures and helps maintain its elastic structure. The –15°C cold flexibility rating allows safe use in regions with freezing conditions by reducing the risk of cracking.
The 2 mm thickness provides an advantage in applications where minimizing structural load is important.
Technical Specifications
Thickness: 2 mm
Cold Flexibility: –15°C
Modification Type: SBS (Styrene-Butadiene-Styrene)
Reinforcement Layer: Polyester felt or fiberglass mat
Top Surface: Polyethylene film or sand-coated surface
Application Method: Torch-applied installation
Applications
Cold Climate Regions: Suitable for areas with high freezing risks.
Intermediate Layer Waterproofing: Provides lightweight and cost-effective solutions.
Prefabricated Buildings: Preferred for projects requiring fast installation.
Temporary Structures: Suitable for economical and short-term applications.
Roof Applications: Used in systems requiring lightweight waterproofing solutions.
Advantages
Cold Weather Resistance: Maintains flexibility down to –15°C.
Lightweight Structure: Does not add excessive load to roofs and provides easier installation.
Economical Solution: Offers cost advantages in cold climate projects.
Easy Installation: Enables fast application with torch bonding method.
Wide Range of Applications: Suitable for residential and industrial buildings.
Application Recommendations
Surface Preparation: The application surface must be clean, dry, and smooth.
Primer Application: The use of bituminous primer is recommended to improve adhesion performance.
Overlap Details: Minimum 10 cm overlap should be applied, and full bonding should be achieved through heat application.
Protection Measures: For exposed applications, UV-resistant surface options should be preferred.
Frequently Asked Questions (FAQ)
In which climates is the 2 mm –15°C SBS modified bituminous membrane preferred?
It is suitable for use in cold regions where freezing conditions may occur.
Why choose 2 mm instead of 4 mm?
It provides advantages in specific projects due to its lighter structure and lower cost.
Can it be used for foundation waterproofing?
It is generally not recommended. For foundation applications, thicker membranes such as 4–5 mm products are usually more suitable.
What is the advantage of SBS modification?
SBS helps the membrane maintain flexibility at low temperatures and reduces the risk of cracking.
