Axter Intensive roof gardens
Axter Intensive roof gardens |
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Intensive roof gardens usually comprise a thick soil or substrate layer, require regular management or maintenance and necessitate artificial irrigation. Planting can be anything from turf through shrubs to trees and surfaces often include hard surfacing, and walk way or trafficked areas. These are heavy weight systems especially after rainfall and will have major structural implications for the building.
In general the water management comprises a two layer waterproofing system, ALPAFLORE, a specialist drainage board to aid the flow of water from the soil and to ensure that it does not become water logged and a filter layer to stop fine particles clogging up the outlets. The waterproofing specification will depend upon the requirement for thermal insulation; there are three choices: -
| No insulation | typically used where green roofs are required over underground car parks, cut and cover tunnels etc. |
| Warm roof | has the insulation between the deck and the waterproofing. Used where the thickness of the layers above the deck needs to be kept as thin as possible. However as the waterproofing is above the insulation care must be taken to protect the membranes from maintenance tools etc. |
| Inverted roof | has the insulation on top of the waterproofing. This is Axter's preferred system as insulation can be designed to resist the heaviest of loads and the waterproofing is well protected from the effects of garden maintenance. |
Specifications listed are for guidance only and Axter cannot be held responsible for any errors or omissions. It is the specifiers responsibility to ensure that the specifications are suitable for the requirements of his construction. The specifications are for traditional intensive gardens where water run off is a priority, if soil levels are < 30 cm and some water retention is required then Axter's advice should be sought.
Please contact Axter if specifications are to include hard landscaping or trafficked areas.
Caution - The ALPAFLORE waterproofing system is considered to be resistant to an acidity level of pH >= 3.
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