copenagle ecoroof final report

Ecoroof Incentive Final Report

1542 N Simpson St, Portland OR 97217

1

Project Summary

Project type: Detached storage sheds. Ecoroof overview:

• North facing slope. • Covers 100% of roof structures: 6655 square feet. • Steep slope. • Planted with clover seed.

Cost of ecoroof: $2,823

System Components

Waterproofing, drainage, and storm water management

New waterproof roof membrane over protection layer over plywood deck. Two roof drains at the north fascia, both drain to landscaping for on-site stormwater management. Cap flashing at curbs.

10'

2’

16 1/2’

6’

12'



2

EcoRoof components

At north perimeter, 12” x 3 ½” border of ¾ to 1 ½” river rock. Perforated protection boxes above drains. 3 ½” of ProGro extensive soil mix over moisture retention layer (½” recycled carpet padding). Burlap fabric on top of soil.

Soil specifications

Three and a half inches of ProGro extensive mix. Engineered soil media contains 70 – 80% inorganic or mineral material (or higher) to 20 – 30% organic (or less). ProGro http://pro-gromixes.com/green-rooftops.html

1/2” plywood sheeting

hurricane straps2x4 top plates

2x4 studs

2x8 rafters with birds mouth cuts24” o.c.

cedar shingles

1/2” plywood sheeting

waterproof membrane

burlap fabric1 1/2” river rock

2x10 facia

2x4 braces

ProGrow extensive mix soil

clover grown from seed

soil stabilization trellis(2”x4”s)



3

Protection layer (Dens Deck in photo above, fatigue mat on second structure) goes on over plywood sheeting. Curb wall built out of 2x4s.

Waterproof membrane goes on over protection layer.



4

Membrane is folded around edges and trimmed. Carpet padding is placed on top of membrane and wood soil-stabilization system is assembled (using glue only).



5

Flashing is installed on top of curb walls.



6

Sink drains are installed and integrated into membrane with membrane patch kit.

River rock is placed at the low edge of the roof for drainage. Dryer vent caps are placed over the drains. Burlap fabric is used to form a barrier between river rock and growing area, wrapping around the boundary and over the top of the soil to prevent erosion.



7

The wood trellis holds the soil in place.

Burlap is glued to the wood trellis over the entire growing area.



8

The twin sheds with ecoroofs complete.

Close-up of ProGrow extensive mix growing media.



9

Planting Plan

White clover seed was spread on top of the soil.

Irrigation and Maintenance Plan

Owner will water as necessary. Three foot ladder can provide owners with temporary access as needed.



10

Budget

Component Supplier Quantity Description Unit cost Labor cost

Total cost

Membrane ACF West 480 sq ft HPDE 45mil 260 * $260

ACF West 960 sq ft ACF24 $432 * $432

Protection board

Home Depot 2 rolls fatigue mat $200 * $400

Builders Supply Co 11 sheets 1/4" "DENS

board" $158.75 * $159

Water retention mat Home Depot 3 rolls ½” recycled

carpet pad $201 * $201

Drains Home Depot 4 sink drains

Growing media ProGrow 8 yards Extensive Mix

$41.90/yard, $84 delivery

* $432

Edging Mt.Scott Fuel 1 yards 1.5” river rock $100 * $100

Erosion control Onlinefabricstore.com

84 yards of 40” width burlap $0.90/yard

+ shipping * $89

Soil stabilization Lowes 400 linear ft 2x4s Varies * $330

Flashing Lowes 400 linear ft tin flashing Varies * $300

Drain protection Home Depot 4 dryer vent $7 * $30

Plants Outsidepride.com 5 lbs Clover seed $30 * $30 Total

$2,823

copenagle ecoroof final report

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