◇ Product Introduction
Double Two—Pre-laminated Double-layer Self-adhesive Waterproofing Membrane (hereinafter referred to as DT—Pre-laminated Double-layer Self-adhesive Waterproofing Membrane) is an innovative double-layer self-adhesive waterproofing membrane formed by pre-laminating two layers of self-adhesive waterproofing membrane without reinforcement in the factory through a special preparation process. A single application achieves two waterproofing layers, making it an optimal solution after the implementation of the "General Code for Waterproofing."
◇ Product Features
● Cost savings: One application, two waterproofing layers, saving costs and construction time;
● Superior performance: Two layers of self-adhesive membrane without reinforcement are factory-laminated, providing excellent full-surface adhesion, no water channeling paths, and enhanced waterproofing effectiveness;
● Reliable lapping: Long-edge embedded sealing and short-edge multi-layer laminated sealing ensure reliable overlaps, with joint impermeability exceeding national standards by more than 2 times;
● Strong self-healing: The self-adhesive rubberized asphalt compound exhibits creep and self-healing properties, capable of repairing certain levels of damage and cracks under external forces;
● Convenient installation: Simplified application process, with options for wet application, self-adhesive, and coating-membrane composite methods depending on site conditions, ensuring ease of construction;
● Safe and eco-friendly: No open flames or organic solvents during installation, avoiding environmental pollution, eliminating fire hazards, and saving energy.
◇ Specifications and Dimensions
| Type | Thickness (mm) | Width (mm) | Length (m) |
| PET Type | 1.5+1.5 | 1000 | 20 |
| PE Type | 1.5+1.5 | 1000 | 20 |
Note: Other specifications and dimensions may be determined through negotiation between the supplier and the buyer.
◇ Scope of Application
Suitable for waterproofing projects of basement slabs in industrial and civil buildings, side walls of basements with external waterproofing applied externally, subways, tunnels, utility tunnels, and roofs.












