Milwaukee • New Orleans • Chicago • Seattle • Minneapolis

Electronic vector mapping is a cutting edge technology that is redefining the art of leak detection and quality assurance in lowslope roofing systems. Vector mapping pinpoints breaches in the roof membrane by tracing the flow of an electric current across the membrane surface. Already Europe’s most widely used method for detecting roof leaks, vector mapping is rapidly being adopted by Manufacturers and contractors in the United States.

Vector Mapping is ideal for: • Quality assurance testing of new roofs• Roof integrity testing prior to the installation

of overburden• Pinpointing leaks in existing roof membranes,

including most vegetative roof systems• Warranty verification

Vector mapping eliminates the dangers and potential damage inherent in traditional flood testing. Unlike the interpretive process of water, flood, infrared, or nuclear testing, vector mapping detects membrane faults directly. It is ideal for quality and warranty assurance needs, for leak testing of green (vegetative) and ballasted roofs, and for leak detection in all low-slope roofing systems in which the membrane is not electrically conductive and the deck can be electrically grounded. Even pinhole leaks invisible to the naked eye can be pinpointed with vector mapping, so repairs can be made on the spot and immediately retested to ensure watertight results.

HANGING

GARDENS Service #

Leak Detection EFVM 1300

Milwaukee • New Orleans • Chicago • Seattle • Minneapolis

HANGING

GARDENS Service #

Growth Media Testing 1400

RECOMMENDATIONS TESTING OPTIONS

In a market with many new and unproven stormwater mitigation technologies, the importance of testing and monitoring is imperative for quality control and project endurance. This is even more important given the perceived free will of contractors to value engineer specified materials in an attempt to lower the project costs. It is paramount that in this fledgling industry that value engineering is not synonymous with the compromising of the intended design. That said, regulated testing of these systems through the life cycle of a project will provide for more successful outcomes.

These testing methods should involve third party testing and data logging regardless of the system or project that is being measured. Hanging Gardens partners with numerous testing facilities depending on what necessary product testing is required for a project.

Specific to vegetative roof growth media testing, we follow both ASTM and FLL (European Testing Methods). Samples for testing should be completed prior, during and after construction of projects to ensure the continuity of the materials, water used, and additional advanced controls.

• One complete test shall be provided atsubmittal.

• Minimum size necessary for testing is one, 5gallon pail of material. Material is not to becompacted when shipped.

• One complete test shall be provided for each100 C.Y. of growth media produced for aproject.

• Random complete testing of delivered growthmedia shall be completed through the projectconstruction.

• Yearly tests in the Spring of each year for pH,Lime & Salinity; Nutrient levels and CationExchange Capacity shall be completed toexpose any need for media amendments toensure optimum plant health.

Grain Size Distribution/Avg. Particle Size Density • Grain size distribution from silt/clay fraction

through 3/8” sieve

Water & Air Management

Density

• Application, Saturated and Dry MediaDensities

Crushing Value/Separation Value • % change in size, bulk density & compaction

ratepH, Lime & Salinity • pH, Carbonate & Electrical Conductivity• Organic Percentage base on % of Dry Weight

Nutrients • Primary, Secondary & Trace Nutrient testCation Exchange Capacity