The life of waterproofing membrane varies depending on many factors such as material type, construction quality and environmental conditions.
Life of different types of waterproofing membranes
SBS modified asphalt waterproofing membrane: Under standard use, the service life can exceed 15 years.
Polyethylene polypropylene composite waterproofing membrane: The service life can reach more than 50 years.
Self-adhesive rubber asphalt waterproofing membrane: It can be used for 20 years below 7°C, 28 years at around 20°C, and 15 years above 37°C.
PVC waterproofing membrane: It can be used for more than 30 years on the roof and up to 50 years underground.
Factors affecting the life of waterproofing membranes
Ambient temperature: For every 10°C increase in temperature, the aging rate of the membrane will accelerate by about 50%. In a high temperature environment, the material components of the membrane will decompose faster, resulting in a decrease in its bonding ability and waterproof performance.
UV radiation: Long-term exposure to sunlight will cause the surface of the membrane to crack and discolor, affecting its overall performance.
Humidity: High humidity environment will cause the membrane to absorb water, affecting its adhesion and waterproof performance.
Foundation material: The air permeability and chemical corrosion resistance of the foundation material will also affect the life of the waterproof membrane.
Construction quality: Bubbles, wrinkles or unbonded areas during the construction process will shorten the service life of the membrane.
Methods to extend the life of waterproof membranes
Standardized construction: Ensure that the base is properly treated and the membrane is laid tightly to avoid defects such as hollowing and bubbles.
Strengthen protection: Measures such as covering the film and applying the protective layer can prevent the waterproof layer from being damaged and eroded by external factors.
Regular inspection: Timely discover and repair damaged parts to avoid problems such as water leakage.
Improve the use environment: Reduce the impact of harsh climatic conditions such as high temperature, low temperature, strong ultraviolet radiation, and acid rain.
