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Waterproofing Lifespan Guide
Butynol typically lasts 15 to 20 years, TPO membranes 20 to 30 years, and Torch-On systems 20 to 25 years. Professional installation and regular maintenance can extend that lifespan further.
By system
Expected lifespan
- TPO Membrane
- 20 to 30+ years
- Butynol
- 15 to 25 years
- Torch-On Membrane
- 20 to 30 years
- Tanking Membrane
- 50+ years with BRANZ-appraised systems
- Dec-K-Ing
- 15 to 20+ years with professional installation
Lifespan depends on installation quality, site exposure and maintenance. We recommend an inspection for any membrane over 15 years old, and sooner if you notice ponding water, cracking or seam separation.
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