CG Gravel Layer

Green Roof Standard
- CG Gravel Layer

Ecological value

Water storage

Care and maintenance

A gravel roof is usually a flat one with gravel tipped on top of it. A gravel layer at least 7 cm thick provides protection from ultra violet rays and therefore prevents heating building up on the roof’s surface. The gravel acts as a filter for the rainwater, which means that run-off is not slowed down by dirt. Good drainage on the gravel roof means that rainwater quickly runs off and therefore makes the waterproofing membranes last longer. At the same time, the weight of the gravel layer prevents suction during gales.

Use ClimaGrün’s own configurator and solution finder to obtain an overview, detailed system planning and calculation of the costs in no time.

1Round gravel CG-RK 15/30

Round gravel CG-RK 15/30 as load material to protect the waterproofing.

2Filter, drainage & protection element CG-FDS 8

Filter, drainage & protection element CG-FDS 8 for a high-performance system layer without water storage with filter, drainage and protection function for the walking surface.

Inspection chamber CG-KS 40 h5

Inspection chamber CG-KS 40 h5 for use above roof drains on extensive and intensive roof areas with gravity drainage.

Technical info

Weight*	approx. 115 kg/m²
System height	approx. 8 cm
Roof pitch	0-5°
Load material	Round gravel
Water retention	approx. 20 %/year
Peak discharge coefficient	Cs = approx. 0,8

Tenders made easy

Filter, drainage & protection element CG-FDS 8

ClimaGruen Filter, drainage & protection element CG-FDS 8 for a high-performance system layer without water storage with filter, drainage and protection function for the walking surface with the following properties: Material geotextil filter PP (polypropylene) - PE (polyethylene), Material dimpled sheet HIPS (high impact resistant recycled polystyrene), Material separation layer PP (polypropylene), Nominal thickness (total) approx. 8,0 mm, Weight (total) approx. 695 g/m², Opening width O90 (EN ISO 12956) approx. 0,15 mm, Static puncture resitance (EN ISO 12236) approx. 1.500 N, geotextile robustness class GRC 2, compressive strength (DIN EN ISO 25619-2) approx. 450 kN/m² at 10% compression, water permeability (EN ISO 11058) approx. 100 l/m²s, water drainage capacity (DIN EN ISO 12958) measured at σ = 20 kPa and 2% slope approx. 0,36 l/m*s, supply and lay professionally.
Raise protective layer

Properly raise the protective layer from the preliminary position at the edge area according to the planning specifications.
Round gravel CG-RK 15/30

ClimaGruen round gravel CG-RK 15/30, for use as edge strips, for the formation of fire protection strips and as ballast material to protect the waterproofing, supply and install to the naturally compacted layer height of 7 cm. Material Natural stone, grain size approx. 15/30 mm, weight approx. 1.600 kg/m³, colour dark grey, grey, white, grain shape predominantly round and frost-resistant.
Inspection chamber CG-KS 40 h5

ClimaGruen inspection chamber CG-KS 40 h5 for use above roof drains on gravel roofs with gravity drainage, with the following features: Material PP (polypropylene), colour anthracite, dimensions approx. 400 x 400 x 60 mm, weight approx. 1,7 kg, UV-resistant, manhole cover tread-resistant & closable, manhole base opening approx. 31 cm, supply and install professionally.

Downloads

Projects

Manna Resort Hotel

Denisstrasse in Munich

ClimaGrün solutions

Use ClimaGrün’s configurator to adapt your green roof to project requirements and find the right solutions.

CG Gravel Layer

Technical info

Extra products and add-ons

Deco gravel CG-DK 15/25 nero

Separation profile ALU CG-TP

Inspection chamber CG-KS 40 h10

Tenders made easy

Downloads

Projects

Manna Resort Hotel

Denisstrasse in Munich

ClimaGrün solutions

Further system solutions

CG gravel layer retention

CG Extensive Natural Meadow

CG Green Roof Solar Retention