Waterproofing membranes and special techniques 2025
Introduction
Waterproofing and insulating membranes are fundamental components of modern construction, capable of:
- Protecting structures from water ingress, damp and the weather
- Ensuring thermal insulation and moisture control
- Extending the service life of roofs, foundations, terraces, floor slabs and infrastructure
In 2025, advances in materials and technology have produced membranes that are higher-performing, lighter, more flexible and more sustainable, with specific solutions for every type of project.
1. Traditional waterproofing membranes
Bituminous membranes are the most widespread and proven solution for waterproofing:
- Flat and pitched roofs
- Terraces and flat roof decks
- Substructures, retaining walls and foundations
Technical characteristics:
- Modified bitumen base (APP or SBS)
- Hot application (torch-on) or self-adhesive
- Thicknesses from 3 to 5 mm, with polyester or glass reinforcement
- Compatible with protective layers (gravel, screed, floating floors)
- CE certification to EN 13707, EN 13969
2. Synthetic waterproofing membranes
New-generation membranes in plastomeric and polyolefin materials, ideal for large surfaces, fast installations and plant areas.
Most commonly used types:
| Type | Material | Advantages |
|---|---|---|
| PVC-P | Plasticised polyvinyl chloride | Flexibility, chemical resistance |
| TPO/FPO | Flexible polyolefins | Non-toxic, hot-air weldable |
| EPDM | Synthetic rubber | Elasticity, durability >30 years |
Applications:
- Commercial and industrial roofs
- Green roofs, solar PV roofs, ventilated roofs
- Tanks, swimming pools, channels and special waterproofing
Cold-applied, with hot-air welding or bonding
Systems certified for reflective roofs (Cool Roof)
3. Breathable damp-proof membranes
Technical products for vapour and moisture management, essential in roofs, loft spaces and ventilated façades.
Characteristics:
- Three-layer breathable membranes
- Waterproof, but permeable to water vapour
- High mechanical and UV resistance
- Compatible with dry systems, external wall insulation and passive ventilation
Main uses:
- Under-tile layers and timber roofs
- Ventilated façades and cavity walls
- Prefabricated and eco-building structures
Compliant with UNI EN 13859-1/2
4. Insulating and heat-reflective membranes
Integrated solutions that combine waterproofing and thermal insulation, to streamline installation sequences and reduce thermal bridges.
Types:
| Type | Structure | Performance |
|---|---|---|
| Membranes bonded to insulation boards (PU, PIR, EPS) | Waterproofing + insulation | Thermal resistance down to λ 0.022 W/mK |
| Heat-reflective membranes | Surface with aluminium film | Reduction of radiant heat, Cool Roof effect |
| Membranes with graphite or insulating additives | Greater thermal efficiency at reduced thicknesses | Ideal for renovation work |
Use:
- Flat or pitched roofs with direct application
- CAM-certified systems for building tax bonuses
- Energy retrofitting of public or industrial buildings
5. Special technical membranes
Highly specialised products for industrial environments, infrastructure, tunnels, bridges, plant installations and high-stress situations.
Examples of special membranes:
| Type | Applications | Advantages |
|---|---|---|
| Self-healing membranes (bentonite or active polymers) | Foundations, tanks, below-ground structures | Activated by contact with water |
| Root-resistant membranes for green roofs | Roof gardens, planted roofs | FLL certification, biological resistance |
| Liquid polyurethane / PMMA membranes | Complex details, irregular surfaces | Roller or trowel application, jointless |
| Membranes resistant to hydrocarbons or chemicals | Industrial areas, garages, process plants | High chemical and mechanical resistance |
✅ Products with certified resistance to puncture, fire, roots and aggressive substances
Standards and certifications 2025
All membranes must comply with European standards:
- EN 13707 – Waterproofing of roofs
- EN 13967 / 13969 – Waterproof membranes for foundations and walls
- UNI EN ISO 10456 / 6946 – Thermal conductivity and transmittance values
- CAM edilizia – Environmental criteria for public works
- CE, marking of tensile strength, elongation and permeability
Conclusion
Waterproofing and insulating membranes in 2025 represent a technological advance that makes it possible to:
- Protect every part of the building envelope effectively
- Reduce energy losses and consumption
- Meet the new environmental regulations and CAM requirements
- Speed up installation and maintenance
Do you need help choosing the membrane best suited to your project?
Visit our portal for:
- Detailed technical data sheets and comparisons for residential, industrial and infrastructure use
- Certified solutions for building tax bonuses, public tenders and CAM-compliant design
- Free technical advice on selecting the most suitable waterproofing systems
👉 Discover the 2025 range of professional waterproofing and insulating membranes now and optimise the durability, efficiency and performance of your site.
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