DELTA-XX PLUS® HEAVY Roof Membrane – Long-Lasting Protection with 30-Year Warranty

24/07/2026

DELTA-XX PLUS® HEAVY Roof Membrane – Long-Lasting Protection with 30-Year Warranty

DELTA-XX PLUS® HEAVY Roof Membrane – Long-Lasting Protection with 30-Year Warranty

DELTA-XX PLUS® HEAVY

DELTA-XX PLUS® HEAVY is an advanced roof membrane solution designed to provide long-term protection in roofing systems with its multi-layer structure and high vapor permeability. Successfully passing demanding performance tests, this product has proven its reliability with ETA (European Technical Assessment) approval.

Roofs are one of the most critical protection layers of buildings against external factors. Therefore, the materials used in roofing systems must provide both durability and high performance. DELTA-XX PLUS® HEAVY meets these requirements by creating a safe, efficient, and long-lasting roofing solution.

What is DELTA-XX PLUS® HEAVY?

DELTA-XX PLUS® HEAVY is a breathable roof membrane consisting of PP spunbond and PU coating layers. Thanks to its waterproof and vapor-permeable structure, it prevents external water penetration while allowing moisture inside the building to escape. This helps maintain the performance and durability of the entire roof system.

Key Advantages

Long-Term Durability

  • Proven to maintain high performance through extensive testing
  • Provides excellent resistance against challenging weather conditions
  • Ensures reliable protection throughout the service life of the roof

30-Year Warranty

  • Offers long-term assurance when professionally installed
  • Provides product replacement and technical support advantages in case of potential issues

Self-Adhesive Edges

  • Creates strong waterproof sealing at overlap areas
  • Prevents cold air and moisture infiltration, improving energy efficiency

High Breathability

  • Allows vapor to escape and helps prevent condensation
  • Provides faster moisture transfer compared to traditional bituminous systems

Wide Application Compatibility

  • Suitable for both boarded (OSB) and non-boarded roof structures
  • Compatible with ventilated and non-ventilated roofing systems

Application Areas

DELTA-XX PLUS® HEAVY can be safely used in:

  • Boarded and non-boarded roof systems
  • Under metal, fiber cement, and slate coverings
  • Temporary exposed roofs during construction phases
  • Ventilated facade systems as a protective membrane

Technical Specifications

PropertyValue
MaterialPP spunbond + PU coating
Fire ClassificationClass E
Tear Resistance370 / 270 N/5 cm
Waterproof PerformanceClass W1
Sd Value0.08 m
Temperature Resistance-40°C / +80°C (short-term +100°C)
UV Resistance16 weeks
Exposure ResistanceUp to 4 weeks
Roll Dimensions50 m x 1.50 m (75 m²)
WeightApproximately 200 g/m²

Frequently Asked Questions (FAQ)

Which roof types can DELTA-XX PLUS® HEAVY be used on?

It can be safely applied on boarded roofs, non-boarded roofs, metal-covered roofs, and slate roofing systems.

How long is the warranty period?

DELTA-XX PLUS® HEAVY offers a 30-year warranty when installed professionally according to application requirements.

Why is breathability important in roof membranes?

Breathability allows moisture inside the roof structure to escape, helping prevent condensation, material damage, and performance loss.

Can the product remain exposed during construction?

Yes. DELTA-XX PLUS® HEAVY can withstand external conditions for up to 4 weeks before final roof covering installation.

Does it contribute to energy efficiency?

Yes. Its airtight and waterproof structure helps reduce heat loss and supports improved building energy efficiency.

DELTA-XX PLUS® HEAVY provides a reliable roofing solution with high durability, excellent moisture management, and long-term protection for modern construction projects.