Felton Properties Green Roof Report 400 SW 6th Ave Portland, OR 400 Building Introduction: The ecoRoof will combine innovation with practicality. The building is currently seeking LEED Gold certification, and ecoREAL will work in an integrated fashion with roofing experts specializing in weatherproofing, structural engineers and green roof companies specialized in the bio- regions native plant species to come up with the best design and function for meeting the building overall green building goals. Water drainage, low-impact design and aesthetic will be looked at simultaneously. At each layer of the green roof sustainable design attributes will be assessed for regional material (especially vegetation) and recycled content (such as the HDPE geo-cells) in the drainage system along with triple bottom line life-cycle assessments on how the project affects the context (such as HVAC systems, and surrounding buildings). Since the building is on a zero- lot, the green roof grant is critical for pursuing LEED certification relating to both Sustainable Sites and Water Efficiency credits. The green roof would augment Felton Properties commitment to retrofitting their existing building stock to be more sustainable. Left: Looking South over green roof installation Right: Looking Northeast over green roof installation Project Type Commercial retrofit Technologies Malarkey roofing tray system 2000 sqft Tuff Stuff - Sedum Tile Major Benefits Stormwater management - limit disruption and pollution of natural water flows by managing stormwater runoff. Heat Island Reduction - reduce heat islands to minimize impact on microclimate and human and wildlife habitat. Cost $70,192.00 Constructed .O.  Box  17217,  Portland,  OR  97217-­0217 Telephone:  (503)  283-­1  www.MalarkeyRoofing.com .O.  Box  17217,  Portland,  OR  97217-­0217 Telephone:  (503)  283-­1  www.MalarkeyRoofing.com System Components: AVRS Tray System System Components: Tuff Stuff – Sedum Tile Technical Data Vegetation – 95% coverage Fiber/Soil Base – Approx. 1” thick Measurements – 15”w x 20”l x 2”-3”h Area = 2.08 sqft per tile Max weight – 4.5 #/sqft fully saturated Irrigation: No irrigation was used on this project. The tray system chosen was designed and planted to not utilize any irrigation system. Budget: Existing Roof make minor tune up repairs At window washer davits and supports, clean and reseal all with SBS modified mastic and with granules Make misc. minor repairs and reseal all pipe penetrations At west parapet reseal parapet cap metal flashing joints Total: $9,900.00 Green roof option 10% of total roof area 2000sqft Install 1/8 inch protection board underneath green roof trays, 2000sqft Install Malakey roofing tray system with fully mature ...

1. Felton Properties Green Roof Report
400 SW 6th Ave Portland, OR
400 Building
Introduction:
The ecoRoof will combine innovation with practicality. The
building is
currently seeking LEED Gold certification, and ecoREAL will
work in an
integrated fashion with roofing experts specializing in
weatherproofing,
structural engineers and green roof companies specialized in the
bio-
regions native plant species to come up with the best design and
function
for meeting the building overall green building goals. Water
drainage,
low-impact design and aesthetic will be looked at
simultaneously. At
each layer of the green roof sustainable design attributes will be
assessed
for regional material (especially vegetation) and recycled
content (such
as the HDPE geo-cells) in the drainage system along with triple
bottom line
life-cycle assessments on how the project affects the context
(such as
HVAC systems, and surrounding buildings). Since the building
is on a zero-
lot, the green roof grant is critical for pursuing LEED
certification relating to

2. both Sustainable Sites and Water Efficiency credits. The green
roof would
augment Felton Properties commitment to retrofitting their
existing
building stock to be more sustainable.
Left: Looking South over green roof installation
Right: Looking Northeast over green roof installation
Project Type Commercial retrofit
Technologies
Malarkey roofing tray system 2000 sqft
Tuff Stuff - Sedum Tile
Major Benefits
Stormwater management - limit disruption and pollution of
natural water flows by managing stormwater runoff.
Heat Island Reduction - reduce heat islands to minimize impact
on microclimate and human and wildlife habitat.
Cost $70,192.00
Constructed
.O. Box 17217, Portland, OR 97217--0217
Telephone: (503) 283--1 www.MalarkeyRoofing.com
.O. Box 17217, Portland, OR 97217--0217
Telephone: (503) 283--1 www.MalarkeyRoofing.com

3. System Components: AVRS Tray System

4. System Components: Tuff Stuff – Sedum Tile
Technical Data
Vegetation – 95% coverage
Fiber/Soil Base – Approx. 1” thick
Measurements – 15”w x 20”l x 2”-3”h
Area = 2.08 sqft per tile
Max weight – 4.5 #/sqft fully saturated
Irrigation:
No irrigation was used on this project. The tray system chosen
was
designed and planted to not utilize any irrigation system.
Budget:
Existing Roof make minor tune up repairs
At window washer davits and supports, clean and reseal all with
SBS
modified mastic and with granules
Make misc. minor repairs and reseal all pipe penetrations
At west parapet reseal parapet cap metal flashing joints
Total: $9,900.00

5. Green roof option 10% of total roof area 2000sqft
Install 1/8 inch protection board underneath green roof trays,
2000sqft
Install Malakey roofing tray system with fully mature plants,
2000sqft
Provide crane service to load green roof trays to roof at SW side
of
building ($9,211.00)
Total: $60,292.00
Success and Lessons Learned:
In beginning our search, it was important to find a green roofing
option
that required little maintenance. We were successful in finding
the perfect
selection after a little research. By choosing a drought resistant
choice,
the maintenance requirements change drastically. Doing our
research
ahead of time helped tremendously in terms of setting goals, but
having a
seamlessly coordinated team from the beginning would have
helped. In
the future we realize the importance of connecting the roofing
contractor
with the green roof manufacturer and the nursery providing the
vegetation, in order to make sure all of the project goals are met
with few
setbacks and no change orders.

6. 400 Rooftop plan showing dimensioned green roof.
Corporate
Report
Clerk’s Files
Originator’s
Files EC.19.GRE
DATE:
September 28, 2004

7. TO: Planning and Development Committee
Meeting Date: October 18, 2004
FROM: Edward R. Sajecki
Commissioner of Planning and Building
SUBJECT: Green Roofs
ORIGIN: Planning and Building Department
BACKGROUND: This report is in response to a request from
Councillor Mullin's
office to report to Planning and Development Committee on
green
roofs.
COMMENTS: Definition of Green Roofs:
A green roof is a contained green space on top of a human-
made
structure and is an extension of the existing roof, not potted
plants
(sometimes called roof gardens). Green roofs consist of the
following layers:
• a special water proof and root repellent membrane;

8. • a drainage system;
• filter cloth;
• a lightweight growing medium (soil); and
• plants.
Planning and Development Committee - 2 - September 28, 2004
Types of Green Roofs:
• intensive, extensive or semi-extensive;
• accessible or inaccessible;
• incorporated into the design of new buildings or added to an
existing roof provided that the structure can accommodate it.
• incorporated into the design of new buildings or added to an
existing roof provided that the structure can accommodate it.
Intensive green roofs have a soil depth of 15 cm (5.9 in.) or
more,
usually provide a park-like setting with public access and
require
regular maintenance. Extensive green roofs have a soil depth of
less than 15 cm (5.9 in.), are low weight, low cost, require
minimal
maintenance and normally are not accessible to the public.
Benefits of Green Roofs – public and private

9. Ecological Benefits:
• stormwater management – reduce stormwater runoff, improve
stormwater quality and temperature;
• climate moderation – reduce Urban Heat Island Effect;
• improved air quality – absorb heat, filter air, produce oxygen,
reduce smog;
• create wildlife habitat and biodiversity; and
• energy conservation.
Economic Benefits:
• prolonging roof life and offers roof protection;
• energy savings – provides building insulation;
• noise reductio n – sound insulation;
• added property value;
• enhanced corporate image;
• proven return on investment through savings in hearing and
cooling costs, as well as, roof maintenance; and
• create jobs.
Planning and Development Committee - 3 - September 28, 2004

10. Social Benefits:
• enhance overall quality of life – improve human health and
well-being due to additional oxygen, air filtration, humidity
control, horticultural therapy;
• improve urban aesthetics and provide sense of space - convert
unappealing hard surface roofs into natural landscapes;
• provide additional recreational spaces – parks, nature
preserves, community gardens, social meeting spaces, green
spaces to look upon;
• possibility for urban agricultural – growing food locally; and
• ties into Smart Growth strategies – Healthy Cities, enhances
infill development.
Costs, Payback and Incentives:
Depending on the type of green roof, it may cost twice as much
as
a conventional roof. The payback to the building owner results
from reduced energy costs, lower heating and cooling costs and
less maintenance. The overall social benefits are tremendous.
Some governments throughout North America and Europe
provide
incentives to promote green roofs on private buildings
including:
financial support programs, fee reduction, density bonusing and

11. zoning.
In Canada, there are government programs available for
research
and promotion of green roofs through: Commercial Building
Incentive Program, Industrial Building Incentive Program,
Green
Municipal Enabling Fund and EcoAction.
Building Code:
The Ontario Building Code does not address green roofs
specifically. However, the Building Code does require that the
design of the structure be able to accommodate the load of the
additional layers and that drainage be adequately addressed.
Planning and Development Committee - 4 - September 28, 2004
Municipal Examples:
For centuries, roofs have been used for growing plants, but the
emergence of a green roof industry is fairly recent. Green roofs
have been popular in Europe for over 40 years, however, in
North
America it is a relatively new concept. The vast majority of
green
roofs are found on government and institutional buildings, but
there are also many examples on private buildings. Many cities

12. in
North America have demonstration sites for green roofs and
have
policies and incentive programs in place encouraging green
roofs.
In the United States, cities such as Chicago, Portland, New
York,
Dearborn and Seattle have city ordinances and have green roofs
on
some municipal buildings. In Canada, cities such as Toronto,
Waterloo, Vancouver, Kitchener, Guelph and Winnipeg have
demonstration green roofs.
The City of Toronto supports and encourages green roofs in
their
Official Plan. Under their Natural Environment section of the
Official Plan, policy #17 states: "Innovative energy producing
options, green industry and green building designs and
construction practices will be supported and encouraged in
building renovation and redevelopment through: f) the
development of innovative green spaces such as green roofs,
and
designs that will reduce the urban heat island effect." Other
examples encouraged by the policy relate to: reduction of
stormwater flows, water conservation and efficiency, waste
reduction and recycling, renewable energy systems and
advanced
energy-efficient technologies.
In addition, the City of Toronto has two committees dedicated
to
environmental issues. One is the Round Table on the
Environment, which is an advisory committee, and the other is

13. an
Interdepartmental Task Force, which coordinates common
interests, both of which, amongst other environmental issues,
deals
with green roofs.
Planning and Development Committee - 5 - September 28, 2004
Research:
There are several research projects underway in Canada
regarding
green roofs. Various stakeholders provide funding and in-kind
support for these projects, such as:
• Canada Mortgage and Housing Corporation
• Environment Canada
• National Research Council Canada
• Ministry of Environment
• Toronto and Region Conservation Authority
• Canadian Federation of Municipalities
• Ontario Power Generation
• universities and colleges
• municipalities
• Green Roofs for Healthy Cities
• private sector
Toronto has received funding through the Green Municipal
Enabling Funds to explore the feasibility of green roofs in the

14. City
of Toronto, namely: what are the real benefits to the City;
cost/benefit analysis; and investing in green roofs through
grants,
fees, etc. The study will serve as a template to other
municipalities
to assess the benefits of green roofs. The results of the study
are
anticipated to be released in the spring of 2005.
The City of Waterloo is presently conducting a green roofs
feasibility study to evaluate a number of municipally-owned
properties for their suitability for a green roof.
Environment Canada is doing a project to model the urban heat
island effect in Toronto. Included in the model is green roof
technology.
Green Roofs for Healthy Cities is a network of public and
private
organizations whose mission is “to develop a multi - million
dollar
market for green roof infrastructure products and services in
cities
across North America in order to take full advantage of the
multiple benefits of these proven technologies”. They are
conducting a study in Toronto to determine the viability of
different plant species and a range of extensive and intensive
Planning and Development Committee - 6 - September 28, 2004

15. applications in the Canadian climate. They are also monitoring
the
stormwater runoff from the Eastview Community Centre green
roof in Toronto to assess the effectiveness of green roofs as a
stormwater management option.
Food Share Toronto is exploring the design of rooftop growing
systems for commercial food production.
The Rooftop Garden Consortium in Ottawa is researching the
benefits and durability of rooftop garden technology in
Canadian
climates and sensitivities to climate variability. They are
developing a model to predict the performance and benefits of
green roofs in different Canadian cities.
Greenroof Systems Consortium is a public-private sector
partnership whose members include Toronto and Region
Conservation Authority, Seneca College, York University,
Greenland International Consulting Inc. and Sustainable
Development and Monitoring Inc. They have a project
underway
which will showcase new and existing technologies for the
purpose
of promoting sustainable development in Southern Ontario and
elsewhere.
Staff could arrange a presentation at Planning and Development
Committee on the status of the research, if required.
CONCLUSION: Green roof technology is one aspect of green
building design

16. which provides benefits to air quality, stormwater management,
health and well being, climate moderation, wildlife habitat and
energy conservation. Many municipalities in North America
have
demonstration sites on municipally owned buildings and
promote
green roof technology in building design. There is considerable
research underway which is exploring the feasibility of green
roof
technology in Southern Ontario.
Planning and Development Committee - 7 - September 28, 2004
RECOMMENDATION: That the report titled "Green Roofs",
dated September 28, 2004,
from the Commissioner of Planning and Building, be received
for
information and further that staff monitor the research on green
roof technology and report to Planning and Development
Committee on a regular basis.
Original Signed By:

17. Edward R. Sajecki
Commissioner of Planning and Building
k:...policy ...2004 EnvirSpecial Projects Green Roofs
Report.doc