Technical Data for Sedum Green Roofs

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Not a very exciting blog post I'm afraid but if you're an architect, surveyor or planner these tables contain pretty much all the information you need for specifying a living green roof.

Enviromat sedum matting technical data

Water retention matting technical data

Green roof drainage matting technical data

Flat roof build up technical specification

Pitch roof build up technical specification

 

Enviromat sedum matting technical data

DESCRIPTION

Pre cultivated vegetation blanket on patented nylon loop and geotextile base carrier with substrate growing medium

 

GROWER

Harrowden Turf Ltd, Corkway Drove, Hockwold, Thetford, Norfolk IP26 4JR
Telephone 01842 828266
Website: www.enviromat.co.uk

 

APPLICATIONS

Extensive green roofing
Low maintenance ground cover

 


COMPOSITION

Geotextile

Substrate Growing Medium

Vegetated Layer

 

Geotextile carrier filter layer with bonded UV resistant nylon loops

Recycled crushed brick and expanded clay shale with 20% composted green waste. pH value 6.5 - 7

95% coverage of mixed plant speceise, predominantly sedums.

STANDARD ROLL SIZE  1000mm x 2000mm
NON-STANDARD ROLL SIZE 1000mm x 1000mm (slab)
1000mm width cut only in increments of 500mm
For lengths of 2500mm or more, mechanical handling equipment will be needed
SATURATED WEIGHT  34Kg per square metre
THICKNESS  20mm excluding vegetation.
Vegetation will be approx 30-50mm high at despatch.  Once established, plants wil lreach a height of up to 120mm depending on growing conditions

 

 

 

Water retention matting technical data

 

DESCRIPTION Light weight fleece provides some water storage
APPLICATIONS Use beneath Enviromat sedum matting on flat roof, pitched roof and ground applications
COMPOSITION Recycled fibres, 80% man made, 20% organic
WATER HOLDING CAPACITY 9 litres per square metre
SATURATED WEIGHT 9Kg per square metre
THICKNESS 8mm

 

Green roof drainage matting technical data

DESCRIPTION Light weight drainage mat comporising two layers of geotextile filter layer with bonded UV resistant nylon loops sandwiched between them.
APPLICATIONS Use beneath Enviromat sedum matting and water retetion matting on flat roof and ground applications.
SATURATED WEIGHT n/a - minimal
THICKNESS 20mm

 

Flat roof build up technical specification

APPLICATIONS Suitable for ground use and/or flat roofs with a 1-3 degree pitch.
Sunny aspect with direct sunlight for at least half the day.
PITCH SUITABILITY

1 degree (minimum pitch)
3 degrees (maximum pitch)

COMPONENTS REQUIRED

Heavy guage polyethene root barrier
Drainage matting
Water retention fleece
Enviromat sedum matting

Components protect waterproof layer against root damage and allow adequate drainage whilst retaining enough moisture to support the plants through all but the most prolonged drought.

DEPTH
(excluding vegetation)
48mm
SATURATED WEIGHT For roof applications plaeas allow for a weight of 120Kg/m2 to accommodate live loading.
MAINTENANCE 1-2 maintenance vists per year are essential.

Pitch roof build up technical specification

APPLICATIONS Suitable for sloping banks and/or pitched roofs with a 3.5 to 20 degree pitch.
Sunny aspect with direct sunlight for at least half the day.
PITCH SUITABILITY

3.1 degree (minimum pitch)
10 degrees with no irrigation available
20 degrees if irrigation system is installed

COMPONENTS REQUIRED

Heavy guage polyethene root barrier
Water retention fleece
Enviromat sedum matting

Components protect waterproofing layer against root damage whilst retaining enough moisture to support the plants through brief periods of drought.

DEPTH
(Excluding vegetation)
28mm
SATURATED WEIGHT For roof applications please allow for a weight of 120Kg/m2 to accommodate live loading.
MAINTENANCE

1-2 maintenance visits per year are essential.
On slopes greater than 10 degrees, or on exposed and windy sites, your Enviromat will need watering in hot dry weather.

 

For more information about designing and installing a sedum roof, ask for a copy of the Enviromat product brochure.

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