Green Roof Saturated Weight

The green roof solution uses a unique lightweight growing media rather than soil and as a result is less than 8 cm thick and six times lighter than traditional systems weighing only 20 kg m2 dry or 65 kg m2 saturated.

Green roof saturated weight.

Think about the saturated weight this way. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. That is your starting point. When saturated with water in the summertime when the plants are at their biggest and heaviest the mats weigh 40 45kg m2.

System depth dry weight saturated weight. Weight of standard sedum roof a standard sedum roof has a saturated weight of about 80 kg m. Layered system extensive growing media. Photo by andrew wutke.

Always ask a manufacturer or installer to provide you with the maximum saturated weight of the total green roof system. Now fill that same cup to the brim with water. 8 media depth 25 33 lbs ft2 44 52 lbs ft2. A flat roof built using the enviromat green roof system will weigh the following.

Holds up to 9 litres of water per square metre so saturated weight is 9kg m2. Pre grown trays extensive growing media. You may have to allow this to percolate into all of the voids. If necessary this weight can be reduced to approximately 40 kg m for roofs that can only bear a lightweight green roof system.

The venny green roof melbourne. Lightest weight system at just 44kg m saturated weight loading installed directly onto the root resistant waterproofing complete integrated system 11 species of sedum are grown in the blanket to ensure plant diversity. 4 625 media depth 15 20 lbs ft2 25 30 lbs ft2. An interesting example of an intensive green roof is manaton the award winning private house on dartmoor that uses local meadow grass to blend the family home into the landscape.

Intensive green roofs are essentially roof gardens and may also need to allow for the additional weight of paving and terracing furniture and even trees. Cuttings for plant material weight. In addition the weight also depends on the water buffering capacity of the drainage layer.