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Abstract
"Sustainable development" is one of the more recent politically correct buzz words like "performance specificatons," but the goal of minimizing economic waste without destroying creativity and esthetics is worthwhile. Any system that uses economics as the sole measure of an activity dooms us to be ruled by accountants. To make progress in the roofing industry, we must be able to predict the performance of roofing systems and reach a greater understanding of the factors that affect durability. Practictioners have desired to predit the performance of roofing systems since the craft began. With the applicatoin of the principles of science, expectations grew that the accurate prediction of the future performance of all building materials, not just roofing systems, was right around the corner. These expectations have been dashed by the infinite variety of Mother Nature, by our own ignorance and sometimes, sad to say, by our own efforts to compete with one another in the market place. Tests that can predict future performance are starting to develop; harmonized tests to track the changes in roofing materials as they weather; standards of performance categories for materials based on their exposure; standards using techniques to classify products based on their performance in selected test; survey techniques that come closer to predicting performances. Each of these topics is covered in this paper.
"Sustainable development" is one of the more recent politically correct buzz words like "performance specificatons," but the goal of minimizing economic waste without destroying creativity and esthetics is worthwhile. Any system that uses economics as the sole measure of an activity dooms us to be ruled by accountants. To make progress in the roofing industry, we must be able to predict the performance of roofing systems and reach a greater understanding of the factors that affect durability. Practictioners have desired to predit the performance of roofing systems since the craft began. With the applicatoin of the principles of science, expectations grew that the accurate prediction of the future performance of all building materials, not just roofing systems, was right around the corner. These expectations have been dashed by the infinite variety of Mother Nature, by our own ignorance and sometimes, sad to say, by our own efforts to compete with one another in the market place. Tests that can predict future performance are starting to develop; harmonized tests to track the changes in roofing materials as they weather; standards of performance categories for materials based on their exposure; standards using techniques to classify products based on their performance in selected test; survey techniques that come closer to predicting performances. Each of these topics is covered in this paper.
Date
10/1996
10/1996
Author(s)
Carl Cash
Carl Cash
Page(s)
1-14
1-14
Source
Oak Ridge National Lab
Oak Ridge National Lab
Keyword(s)
sustainable roofing; performance; test methods; weathering; exposure; durability
sustainable roofing; performance; test methods; weathering; exposure; durability