HDPE pre-applied membrane，EVA membrane, EVA waterproof sheet
Q
Are there concerns about compatibility with other materials (e.g., rebar, insulation, concrete additives)?
A
Generally, these membranes are compatible with concrete and rebar. However, designers should verify compatibility with any special admixtures or adjacent systems.
Common materials include HDPE, TPO, FPO and TPR. Each has different performance characteristics such as chemical resistance, flexibility, and water impermeability. However, the best is HDPE pre-applied membrane which is tested by time, especially for methane and radon resistance.
Will the membrane affect future maintenance or renovations?
A
Since the membrane is bonded to the concrete, it is well-protected and rarely requires maintenance. However, any major structural changes may require professional assessment.
Typically, these membranes are designed for a service life of 25–50 years, depending on the product and environmental conditions. For high quality product, such as PMH 3040/PLUS and PMH 3080/PLUS could last as long as the designed life of structure
Why should I choose a pre-applied membrane over traditional waterproofing systems?
A
Pre-applied membranes offer enhanced protection against water migration, improved durability, reduced risk of leaks due to their full adhesion to the structure and saved construction time, labor and expense.
What is a polymer pre-applied waterproofing membrane?
A
A polymer pre-applied waterproofing membrane is a waterproof sheet applied before the concrete pour. It bonds permanently to structural concrete, creating a secure barrier against water ingress.
