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Inspection and Maintenance: Green Roofs (view source)
Revision as of 21:05, 10 August 2022
, 2 years agono edit summary
|[[File:Fail protective layers green roof.PNG|340px|thumb|center| One of the green roof growing media structures has been displaced and requires replacement and repair. (Photo Source: Kevin Songer]]
|[[File:Fail protective layers green roof.PNG|340px|thumb|center| One of the green roof growing media structures has been displaced and requires replacement and repair. (Photo Source: Kevin Songer]]
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==Tips to Preserve Basic BMP Function==
*To avoid over-compaction of the [[filter media]], any maintenance tasks involving foot traffic on the filter bed should not be performed during wet weather.
*Pavers or walkways should be placed at roof access locations and along primary paths to facilitate access and avoid walking on planted portions during inspection and maintenance work.
*To perform installation, maintenance or repair work, do not use sharp tools, lawn staples and stakes which can damage the drainage layer, root barrier and water-proofing membrane. All sharp pieces of metal and fasteners should be removed from the media area with care.
*For green roofs with succulents (e.g., sedum) as [[vegetation]] cover, trim off top stems annually in the spring during the first two years of establishment and leave on the [[Green roof media|growing media surface]] to encourage colonization or purchase and spread fresh cuttings.
*Transplant [[vegetation]] that is established in the vegetation free perimeter areas to supplement plantings on the filter bed if species are appropriate ([[Green roofs: Planting|See appropriate Green Roof Plants here]]).
*Pruning of mature [[trees]] should be performed under the guidance of a Certified Arborist.
*Establish procedures and timing for irrigation system startup and winterization to avoid damage to system components from freezing.
*Routinely check that the [[Green roofs#Irrigation|automated irrigation systems]] is free of damage and delivering water evenly to vegetated areas.
*For green roofs with [[Green roofs#Irrigation|automated irrigation systems]] using municipal/drinking water, schedule watering to occur at night or early in the morning to minimize the loss of water to evaporation;
*For green roofs with [[Green roofs#Irrigation|automated irrigation systems]] using cistern water, irrigating during the day when evaporation rate is high will make greater use of stored rainwater, thereby freeing up more storage in the system for the next rain storm and helping to reduce site runoff volume.