Eco-Roofs Brochure and Specifications PDF - Eco-Roofs Green ...

Eco-Roofs’ Built-Up Recommendations
All of Eco-Roofs’ green roof systems start above a waterproofed roof. Coming from a nursery background, we take
pride in our plant growing expertise and choose to refer you to likewise experienced roofing, construction, engineering or
architectural professionals for anything from the waterproofing on down. From the waterproofing on up, here is what we
recommend, and the options available. Prior to installing the first green roof layer, the waterproofing membrane or other
material should be tested and shown to be leak free and should be clean of all debris. The next section (Supplies, page 27)
provides more information on the individual components.
Protection Fabric: This layer is to protect the integrity of the waterproofing and roofing materials from the green roof
materials above. Root barriers are strongly recommended and are usually composed of 30-40 mil
linear low density polyethylene (LLDPE) or high density polyethylene (HDPE.) Root barriers are
impermeable (water won’t go through them) so they must be the bottom layer. If additional protection
is desired, an 8 ounce or heavier non-woven geotextile is recommended on top of the root barrier.
Specifications, roofing membrane manufacturers or roofing installers may have other requirements or
recommendations which should be followed. These may include a “throw-away” layer of the roofing
membrane, or a layer of other roofing material such as TPO.
Drain Board: Drain boards come in many styles, but are basically cup shaped hard plastic sheets designed to allow
easy passage of any excess water away from the growing media and plant roots. These can be open
and allow free water flow to the roof drains or they can be designed to retain some water for additional
stormwater management. Caution should be used with retention types as they can add significantly
to the weight on the roof, cause freezing issues, create unhealthy stagnant ponds, etc. Local climate
and rainfall will greatly affect this choice. Another option for this layer is to use a layer of aggregate.
Filter Fabric: This layer keeps the soil and plants from washing away and down the drains. Eco-Roofs recommends
a 4 ounce non-woven geotextile. Filter fabric should wrap up the edging or perimeter containment
around drains and all green roof edges.
Composites: Some composite materials are available that have a drain board core with a filter fabric on the top and
an impermeable layer on the bottom.
Growing Media:
See Pages 28 and 29 for more information on all of the protection, filtration and drain board options.
See Page 30 for more information.
Plants: See Pages 31 - 33 for more information.
Perimeter Containment:
Eco-Roofs recommends the
use of GeoEdge aluminum edging
or TECO-Edg recycled PVC
edging for perimeter containment
to hold in the soil and other layers
around the roof edge, drains,
equipment, etc. See page 34 for
more information. Other options
include fire walls and parapet
walls. All edging or walls should
be wrapped up the inside with filter
fabric to contain loose media.
Phone: (269) 471-7408
Plants
Growing Media
Filter Fabric
Drain Board
Slip Sheet
Root Barrier
Protection Fabrics
Roong Materials
Roof Deck up to
Waterproof Membrane
Fax: (269) 471-2495
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Built-In-Place Components