This article was written by my friend, Mr. Rob Realle of Carlisle-Syntec. Carlisle does not foray into the petroleum market, and for good reason.
I'd like to thank Rob for being gracious enough to grant permission to use this very lucid description of why thinner membranes (.045) may be fractionally less expensive in up front cost, but are not a value for long term service. I am not disparaging .045, and may see an application if the owner was in a short term investment scenario, but personally do not specify anything under .060 (20 yr.), and actually prefer the .080 (30 year) for reasons Mr. Realle masterfully describes. The article is posted in it's entirety:
I'd like to thank Rob for being gracious enough to grant permission to use this very lucid description of why thinner membranes (.045) may be fractionally less expensive in up front cost, but are not a value for long term service. I am not disparaging .045, and may see an application if the owner was in a short term investment scenario, but personally do not specify anything under .060 (20 yr.), and actually prefer the .080 (30 year) for reasons Mr. Realle masterfully describes. The article is posted in it's entirety:
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