3.11 INSTALL PERMANENT PROTECTION SYSTEM A. Install Permanent Wind Scour Protection System at parapets 36 inches or lower. B. At parapets, place a 6 foot-wide strip of Permanent Wind Blanket on top of the Protection Layer according to instructions of the System Provider. C. Place Boundary Units Place Geosynthetic Sheet Drain as an underlayment for the Border Units. Place Boundary Units and cover with Separation Fabric. D. Place Stone or Turf Pavers between the Boundary Unit and the parapet. Temporarily fold the Permanent Wind Blanket back over the parapet. Fold the Permanent Wind Blanket back over the completed Growth Media surface. 3.12 INSTALL BOUNDARY UNITS A. Place Geosynthetic Sheet Drain as an underlayment for the Boundary Units. Cover Boundary Units and Geosynthetic Sheet Drain with Separation Fabric to prevent intrusion of media. B. Assemble Boundary Units where identified in the Specification. C. Immediately place Stone, Turf Pavers, or Growth Media. 3.13 INSTALL DRAIN ACCESS CHAMBERS A. Assemble Drain Access Chambers on top of 2-foot wide strips of Geosynthetic Sheet Drain. Cover Geosynthetic Sheet Drain with Separation Fabric to prevent intrusion of media. B. Immediately place an 18-inch wide margin of Stone to stabilize the Drain Access Chambers. C. Separate Stone from the Growth Media according to the recommendations of the System Provider. 3.14 INSTALL PAVER SYSTEM (if required in the Drawings) A. Install Companion Paver System 1. Fill Granular Bedding Material to within 3- inches of the finished surface. Compact using a 4-foot wide lawn roller with a total load of not less than 200 lbs and not more than 300 lbs. 2. Place Separation Fabric and Reinforcing Grid. 3. Fasten Paver Edging to the Reinforcing Grid with Nylon Tie Anchors according to System Provider’s recommendations. 4. Place ½ - 1 inch of Paver Setting Bed. 5. Fit Concrete Pavers snuggly against the Paver Edging and settle with mallets. B. Install Pedestal Paver System (standard) 1. Install pedestals on the Moisture Management Mat or Protection Layer. 2. Level as necessary. 3. Place Concrete Pavers.
2. Plants should be established from 72-cell 3-inch deep plugs (unless indicated in the drawings) propagated in sterile nursery medium, according to the plant provider’s recommendations. The recommended minimum planting rate is two plants per square foot. 3. Thoroughly soak the Growth Media prior to commencing planting. 4. Cover with the Temporary Wind Blanket. Secure Temporary Wind Blanket with Nylon Tie Anchors. As required, make cuts in Temporary Wind Blanket to insert the Plugs. 5. Install Plugs. Plugs should be set into the Growth Media to their full depth and the Growth Media pressed firmly around the installed Plug. At the end of each day, soak those areas that have been newly planted. 6. Apply Tackifier Emulsion according to System Provider’s recommendations. 7. Do not mulch. 3.17 PROVIDE 2-YEAR MAINTENANCE SERVICE A. The Green Roof Installer shall provide a two-year maintenance service. This service will include: Hand weeding and/or chemical weeding and fertilization, as required to maintain the health and vigor of the plants. Plant replacement as needed to achieve the required 80% coverage rate two years following substantial completion. Temporary spray irrigation during the first growing season. All temporary irrigation equipment shall be removed at the conclusion of the maintenance service period. END OF SECTION NOTICE No warranty expressed or implied is offered for any work based on the information provided herein, unless 1) Roofmeadow is provide supervisory role in the construction of the green roof assembly, and 2) Installation and maintenance of the green roof assembly is provided by a contractor that is trained and licensed by Roofmeadow. Roofmeadow will not assume any responsibility for the inclusion of this material in specifications or documents published by others.