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Cold Applied Elastomeric Green Roof Membrane Multi Applications Anti Seepage


Cold Applied Elastomeric Green Roof Membrane Multi Applications Anti Seepage

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Model Number : DWD 120

Certification : ISO

Place of Origin : China

MOQ : Negotiable

Price : Negotiable

Supply Ability : 10000 m2 per day

Delivery Time : Depending on order

Packaging Details : Woven bag packaging for every roller

Payment Terms : L/C, T/T

Material : Polyethylene , PE

Width : 1150mm or customized

Density : 360 - 600g/m2

Thickness : 0.6 - 1.2mm

Color : White or customized

Installation : Can be welded by hot air guns

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DWD Waterproofing Membranes For Green Roof Garden Waterproofing System

Be different from roof waterproofing system, there are two points need to be mentioned in the roof garden waterproofing system - preventing water seepage and preventing plant roots from piercing the waterproof layer and penetrating the buildings.

Roof Garden Waterproofing System

Roof garden waterproofing system

Plants roofing is a systematic project, of which the anti-root waterproofing layer is especially important. DWD WATERPROOFING has been committed to the roof garden waterproofing system for many years. And DWD waterproofing membranes can effectively solve it well.

There are two types of roof garden - Concrete roof plants (heavy roof garden) and light steel, wooden roof plants (light roof garden).

For the heavy roof gardens, the waterproofing workers should be adopted double-layer waterproofing layers system. The first layer is an ordinary waterproofing layer, which can effectively solve the problem of water leakage. The second layer is planting the anti-root waterproofing layer. With the function of chemical roots resistance and root-repelling, plant roots can be effectively solved.

For the light roof garden, due to the overall light weight of the planting system, a polymer waterproofing membrane with roots resistance properties can be adapted to solve the problem of waterproofing and plant root puncture.

DWD 120 Waterproofing Membrane Brochure.pdf

The feature of DWD waterproofing membranes:


Bonded with cement adhesive and suited to full-surface bonding.


Excellent water resistance, anti-seepage, chemical corrosion resistance, aging resistance, and root resistance.

Good seams strength.

Hot air weldable for seams and joints.
Excellent tensile strength.

Adaptability to deformation and flexibility at low temperature to meet wide temperature range application.
Long service life.

Guarantees are more than 30 years under correctly applied.

DWD Waterproofing Membranes

DWD WATERPROOFING can offer you a good performance roof garden waterproofing membrane.

Specification of DWD waterproofing membranes please see the table as below.

Thickness (mm)Length (m)Width (mm)Area (m2/roll)


Note: Width can be customized such as 1500mm, 2000mm, 3000mm and 6000mm etc.

Installation or laying methods of DWD waterproofing membranes:

Mechanically installation.

Fasteners can be set in the overlapped membrane edge, and weld the overlapped edge with a hot-air gun.

Adhered installation.

DWD waterproofing membranes can be fully bonded with DWD cement adhesive.

Welded installation.

Can be welded with the auto-moving welding machine to for the smoothest appearance and excellent seams strength.

Installation Guides of Roof Garden Waterproofing System

  1. Netload of roof garden should be more than 300Kg/m2.
  2. In order to ensure the waterproofing, drainage and fire protection requirements of the roof, the planting surface should not be directly close to the edge of the building facade and should be separated by a 20-50 cm gravel belt or a lightweight material belt. Moreover, it should be separated by 10 cm gravel belt or lightweight material in the sewers, drainage holes, and vents, etc of the garden roofs.
  3. The closed-water test should be carried out to test the existing waterproof capacity. Installing the waterproofing layer first if there is a leakage.
  4. In order to prevent the roots of the plants from penetrating the waterproof layer, a partition layer should be specially set on the waterproof layer to avoid damage to the building structure.
  5. Installing a moisturizing layer to maintain the moisture content of the plants’ nutrient substrate.
  6. Installing the drainage aeration panels to improve the ventilation of plant roots and substrates.
  7. Placing the filter membrane to prevent artificial matrix particles from flowing with water. The filter layer should be directly laid on the storage and drainage aeration panels. When laying, the effective width of the lap joint shall not be less than 10 cm and extend to the side wall of the building, and the folding height shall not be less than 20 cm.
  8. Laying a lightweight synthetic nutrient substrate. It is necessary to select a light artificial planting substrate that has the advantages of safe and reliable physical and chemical indicators such as water storage and drainage, fertilizer retention, ventilation, and adiabatic expansion coefficient and a pH value of 6.8-7.5.
  9. It should be selected the drip irrigation and sprinkler irrigation for a rational irrigation system. Watering should be done immediately after planting, after which it is not suitable for overwork, because plants will grow too fast due to large water, and the comprehensive resistance will decrease.
  10. Plants fixation should be carried out if necessary.

The performance of DWD 120 waterproofing membranes meets the standard of GB 18173.1-2006 High Polymer Waterproofing Materials as shown below.

Breaking tensile strength (N/cm)Normal temperature≥60
Elongation at break rate (%)Normal temperature≥400
Tear strength (N)≥20
No leakage performance (0.3Mpa, 30min)No leakage
Bending temperature under low temperature (℃)≤-20
Heating expansion amount (mm)Extension≤2
Hot air aging (80 C x 168h)Retention rate of tensile strength (%)≥80
Breaking tensile strength retention rate (%)≥70
Alkali resistance (mass fraction of 10% Ca (OH) 2 solution at normal temperature x 168h)Retention rate of tensile strength (%)≥80
Breaking tensile strength retention rate (%)≥80

Artificial climate aging

Retention rate of tensile strength (%)≥80
Breaking tensile strength retention rate (%)≥70
Bond peel strengthStandard test condition (N/mm)≥1.5
Soaking retention rate (%)Normal temperature x 168h70
composite strength (surface and core layer) (N/mm)≥1.2


Normal temperature is defined +25℃.

The performances of artificial climate aging, heating expansion amount, breaking tensile strength at 60℃should not consider if waterproofing membranes are non-exposed.

For the total thickness is less than 1.0mm of the resin composite waterproofing membranes, its elongation at break rate should not be less than 50%, and other performances can reach more than 80% of the prescribed value.

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Product Tags:

root barrier membrane


roof sealing membrane

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