ASTM Standard Addresses Green Roof Water Management

09/12/2017 |

International standards organization ASTM International’s Committee on Roofing and Waterproofing (D08) unveiled a new standard that helps professionals design and install waterproofing membranes for vegetated “green” roofs.

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Facility managers who supervise a new green roof installation or renovation can use this as a helpful supplement, featuring specific instructions from manufacturers, ASTM Standards and building code requirements.

This standard, D8014-17, Standard Guide for Selection of Membranes Used in Vegetative Roofing Systems, offers various options for reviewing the membrane installation before and after the vegetative components are put in place.  In particular, the guide helps ensure good water management systems.

“This guide will help identify the various conditions a designer should be aware of as well as when choosing a roofing membrane for a vegetative system,” says ASTM International member Joe Schwetz, vice president of Technical Service at Sika Sarnafil in Canton, Massachusetts, USA.

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The guide applies to membranes that do or do not require ultraviolet (UV) protection. The guide assumes the supporting structure and roof deck are mechanically and structurally sound and able to accept the weight of the vegetative roof system including the membrane, insulation, and other roofing/waterproofing components, including all components related to the vegetative layers as well as the required design loads. An existing building may require additional reinforcement for the support structure.

To purchase or rent the four-page D8014-17, Standard Guide for Selection of Membranes Used in Vegetative Roofing Systems ($40 for PDF or hardcopy), or for more information about ASTM International standards on sustainable construction, visit the ASTM website.

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