1. No deviation should be made from this specification. Installer assumes liability for any deviations from specification.
   
2. Only LiveRoof® certified installer personnel shall complete all work.
3. Prior to installing LiveRoof® modules, the following procedures are to be conducted:
   
   1. The building Owner, Architect, or Engineer shall verify that the roof is properly designed and constructed to adequately support the load of the LiveRoof® system.
      
   2. The roof is to be flood tested for water tightness for 24 hours. Water testing shall be witnessed and confirmed in writing by Owner’s Representative and/or Design Professional, Waterproofing Contractor, Membrane Manufacturer, and Installation Contractor.
      
   3. Slipsheet/root barrier to be properly installed, seams overlapped and bonded, in accord with architect’s and manufacturer’s specifications.
      
   4. The roof is to be inspected and determined ready to accept the LiveRoof® modules by a Technical Representative of the Installer.
      
4. Once the LiveRoof® installation is completed, an inspection is to be conducted by a Technical Representative of the installer to verify that the LiveRoof® modules have been installed tight against each other, in straight rows, corners aligned, properly oriented, and tight against the edging.
   

1. Provide vegetated roofing systems from the following manufacturer.
   1. LiveRoof, LLC
      Subsidiary of Hortech, Inc.
      P.O. Box 533
      Spring Lake, MI 49456
      (800) 875-1392
      Fax: (616) 842-1392
      
2. 100 mil. thick (sidewall) recycled polypropylene and colored black or gray. 1 foot x 2 feet outside diameter, 3 inches tall (1 3/4” for Lightweight system). The LiveRoof® Soil Elevator™, the insert collar that allows for growing soil above the container edge, is approximately 3½” tall for the Standard System, 2” for the Lite System, and 5½” for the Deep System, 16 mil. thick, 45 mil. for the Deep System, and composed of recycled polyethylene or suitable biodegradable material. Each module is to be filled to the top of the Soil Elevator™. Soil height from container bottom is approximately 4¼ inches, (21/4” for the Lite System and 6” for the Deep System) although normal settling is to be expected and will reduce this height somewhat.
   
3. Saturated weight with mature vegetation: approximately 27-29 lb. per square ft. LiveRoof Lite™ system approximately 15-17 lbs. per square ft. LiveRoof Deep™ system approximately 40-50 lbs. per square ft.
4. Module clearance above roof deck: ½ inch.
   
5. When prevegetated at a Nursery, the Nursery is to execute the following:
   
   1. LiveRoof® Soil Elevator™ is to be properly inserted into fasteners inside LiveRoof® module.
   2. LiveRoof® module is to be filled with LiveRoof® soil and appropriately settled either by mechanical vibration or flooding with water. Any settled soil is to be replaced so that LiveRoof® soil extends to top of Soil Elevator™ at time of planting.
      
6. LiveRoof® module is to be filled with LiveRoof® plants, selected by purchaser. Plants are to be grown to maturity (approx. 95%+ soil coverage).
   

PART 3: EXECUTION

3.1 LIVEROOF® INSTALLATION MUST BE CONDUCTED BY LIVEROOF® CERTIFIED INSTALLER

1. Slip sheet/root barrier, specified by architect and approved by manufacturer, of 40-60 mil. thickness with overlapped and effectively bonded seams to ward against root penetration and to keep waterproofing layer safe and clean from soil during installation. Slip sheet/root barrier typified as follows:
   
   Welded Seam Types (40 mil or greater thickness)
   -TPO, with seams heat welded
   -PVC, with seams heat welded
   -Polypropylene, with seams heat welded
   -HDPE, with seams heat welded
   
   Glued Seam Types (40 mil or greater thickness)
   -EPDM, with seams overlapped a minimum of 3 inches and glued with roll out adhesive or double sided tape adhesive of the type that is impervious to and not affected by moisture, and recommended by the manufacturer.
   -Low profile drain board such as Stevens (appx. 17 mil. thickness), with edges overlapped 3 inches and glued with manufacturer approved adhesive.
   
   Confirm compatibility of slip sheet and waterproofing membrane with manufacturer.
   
   Never use duct tape or any other adhesive not recommended by the manufacturer.
   
   Never use moisture holding fabric, such as needle punched polyethylene or felt, under the LiveRoof™ system. Such materials:
   
   -Are impossible to sweep during installation.
   -Stay wet and encourage root growth and root penetration, and could lead to impeded drainage; especially detrimental if a woody plant were to become established; such plants have woody root systems and potentially could cause roof leaks.
   
   
2. Experienced Contractor to install slip sheet/root barrier in accordance with manufacturer’s recommendations.
3. All surfaces to be smooth, free of debris, soil, and grit prior to placing modules. All materials to be tested water tight and free draining prior to module placement.
4. All surfaces to be maintained clean and free of debris, soil, and grit during installation process via use of broom. Never walk upon such materials as they may damage membranes.
   

1. Properly adapted and acclimatized to local weather conditions.
2. When weather is above 35° F and there is no ice on the roof and LiveRoof® soil is unfrozen.
   

1. LiveRoof® modules are to be delivered in good condition free from shipping damage.
2. LiveRoof® modules are to be installed on the roof top within 4 hours of delivery.
3. Keep LiveRoof modules out of sun on job site if plastic wrapped to avoid overheating.
4. On the job site, LiveRoof® modules are to be handled to prevent damage to the modules themselves and all roofing components.
5. LiveRoof® modules are to be conveyed to roof surface with equipment that is designed to carry the collective load of the LiveRoof® modules and transport vehicle or Hoppit®. Account for decreasing load limits when boom (of crane or fork lift) is extended. Use crane stabilizers and take all necessary precautions to protect building and personnel.
6. Never exceed the load capacity of the roof deck when placing LiveRoof® modules on the roof.
7. When suspending LiveRoof® modules and conveyance vehicle or Hoppit® above deck, take precautions to stabilize vehicle and prevent twisting of conveyance vehicle or Hoppit®. 4 to 8 tires layed on the deck are recommended.
8. Surround area below conveyance vehicle and/or crane with caution/stay clear tape to prevent potential injury.
9. During installation, protect the roof deck and membranes with appropriate material such as plywood sheeting. Never scrape or puncture slip sheet or membranes. Keep roof surfaces free of soil, grit, or debris at all times with broom not blower. Never set LiveRoof® modules on top of soil, dirt or grit.
10. Transport carts to have pneumatic tires, to be wheeled about only upon protective plywood sheeting, and to be loaded so as not to exceed weight capacity of roof deck.

1. Properly instructed in safety procedures and provided LiveRoof Guide to Standardized Installation Procedures.
2. Instructed to keep all work surfaces clean and debris free.
3. To report immediately any damage to membranes, protective sheeting, or drain elements to supervisor, and to make appropriate repairs before proceeding.
4. Instructed in proper methods of LiveRoof® installation by certified representative of installation company.
   

1. LiveRoof® module installation to follow behind installation of slip sheet/root barrier, irrigation system, pavers, ballast, and edging.
2. LiveRoof® installation to be conducted in strict accordance with LiveRoof® installation guidelines. Rows to be straight, modules to be tight against each other with edges overlapping and arranged in proper directional orientation. LiveRoof® Soil Elevators™ removed only when individual modules are completely surrounded by L-shaped edging RoofStone edging, or other LiveRoof® modules, so as to prevent soil spillage. NOTE: If biodegradable Soil Elevator™ is used, then Soil Elevator™ is left in place.
3. LiveRoof® module installation to be conducted in accordance with green roof design.
4. LiveRoof® modules to be placed directly on top of appropriate slip sheet/root barrier.
5. It is recommended that any custom cutting/fitting be oriented on the high side (top), or sides of the roof. It is recommended that the cut side of the module be set tight against the edging or toward the side of an intact module so as to prevent soil spillage. If custom cutting must be done on the low, draining, side of the roof, it is imperative that no filter cloth be inserted as it could impede drainage. It is best to orient the cut side against another module, facing upstream.
6. After installing modules, they should be immediately watered so as to thoroughly moisten the media from top to bottom. Water shall be of suitable quality for plant growth and irrigation system or hoses and sprinklers may be used for such purpose. Note: it takes approximately 1 inch of water, or 11/4 gallons per module to moisten each module thoroughly.
   

1. Documentation
   
   Record all green roof maintenance events. Include name of person, date and activity.
   1. If fertilizer, record type and amount applied per 1000sf
   2. If soil test, record lab
   3. If irrigation, record duration and quantity
   
   
2. Annual Maintenance
   
   
   1. Soil Testing and Fertilization.
      
      During April 1 to 15 of each year, administer an annual soil test for PH and fertility levels.
      
      1. Maintain pH in the range of 6.5 to 8.0. In the event that pH is outside of the 6.5 to 8.0 range, consult LiveRoof, LLC for the appropriate amendment.
      2. Maintain fertility in the normal range using a typical field soil fertility test as provided by A&L labs. When indicated, apply a single springtime application of Nutricote 14 14 14, Type 180 (180 day release period), at 20lbs per 1000sf. Follow the Nutricote labeled directions for application rate, which take priority over any recommendations listed here. Runoff potential does exist and should be evaluated by the applicator in accord with the site specifics; the greater the runoff sensitivity, the lower the application rate. All applications of fertilizer are the sole responsibility of the applicator.
3. Irrigation
   
   1. Watering
      
      Even in the northern temperate zone of North America, successive watering may sometimes be needed to keep LiveRoof® alive. Protracted hot dry weather can result in plant thinning or death. In warmer climates, depending upon rainfall and exposure, regular irrigation will probably be required. Regardless of geography, LiveRoof® recommends the installation of an irrigation system that is appropriate to the scale of the project and able to allow for rapid and efficient irrigation when needed as a “temporary” management tool under the following conditions:
      
      Prolonged hot dry weather, in the northern temperate zone, is generally defined as periods of 75 degree weather, with less than 1” of rainfall persisting for 4 weeks or longer, approximately 2 weeks for LiveRoof Lite system. This time period will likely be less if the temperatures are hotter, the climate warmer, on sloping rooftops, or roofs exposed to strong winds. Such conditions can dry out the green roof substrate and cause the plants to go dormant or to dry up and die. Dormant plants tend to shrink to a smaller size and expose soil, which can predispose the system to weed encroachment.
      
      NOTE: There are no absolutes when it comes to irrigation. Check the plants for wilting in the morning rather than midday. Irrigate thoroughly to runoff to remoisten entire soil profile if the plants show signs of wilting in the morning.
      
      In areas of reflected light, such as next to south facing walls, more frequent irrigation should be applied to keep the soil from becoming excessively dry.
      
      
4. Inspections and Plant Care Protocol
   Conduct the following EVERY 2 WEEKS (twice per month) During the entire Spring through Fall Growing Season
   
   
   1. Conduct hand weeding during the twice monthly inspection. Pull all weeds, never allow any weed to flower, set seed and complete its life cycle. Weeding should be conducted spring through fall in areas where the roof becomes frozen and snow-covered in winter. In warmer climates, it should be continued year round.
      
      The interval may be adjusted in accord with seasonal variations in weed growth, but the interval should never exceed 2 weeks or be long enough to allow for weeds to flower and set seed. Never allow woody plants to establish in a green roof system as their root systems are extensive and can damage roof membranes.
      
      Herbicides, whether pre-emergent or post-emergent, are not recommended as they are not healthy for the environment and can contaminate runoff. A need for pre-emergent herbicides is a sign of weeding too infrequently.
   2. Displaced Soil
      Any displaced soil, typically due to nesting birds, should be immediately replaced.
   3. Drainage Inspection
      Roof drains should be cleared of any debris, pebbles, leaves, etc. during the twice monthly inspection to keep drains flowing freely.
   4. Debris / Trash Removal
      Remove immediately debris or trash during twice monthly inspection. Especially during fall and spring, rake LiveRoof® planting clean of any matted tree leaves to prevent smothering.
   5. Pesticides
      Pesticide use is discouraged and should always be considered secondary to cultural and biological control measures, as pesticides can get into runoff water and cause environmental damage. Pesticide use should only be conducted by qualified and licensed applicators, and on an “as needed” basis. All applications of pesticides are the sole responsibility of the applicator.
   6. Optional Mowing
      If desired, around April 1, mow the green roof to a height of 2” or less. The clippings should stay on the roof. Do not bag and remove. USE PROTECTIVE EQUIPMENT.
      
   7. Wintertime
      Avoid applying salt and other deicing agents to LiveRoof plantings. Avoid walking on frozen plants and roof surfaces.
5. Apply slow release fertilizer as needed in accord with manufacturer’s directions.  Avoid runoff into sensitive areas.
   

1. Conduct post installation inspection to determine acceptance of modules. Inspection to be made by General Contractor’s Representative or by Owner’s Representative upon General Contractor’s request; five working days notice required.
2. Upon acceptance, Owner assumes responsibility for module/plant maintenance.
   

1. Throughout installation, keep all work surfaces clean and free of grit, dirt, or debris. Use broom not blower, do not sweep soil under modules or slip sheet. Following installation, remove all excess materials and tools from job site. Ensure that any damage that occurs as a result of installation is appropriately and immediately repaired.