Dimpled high-density Polyethylene protection membrane
abedrain® is a dimpled high-density polyethylene (HDPE) protection membrane that offers high resistance to all chemical agents usually found in soil and groundwater and to mechanical compression.
abedrain® is used to protect bituminous membranes in walls, basements, and foundations. The product can also be used as separation layers where controlled water flow is required.
- Flat roofs
- Roof gardens
- General purpose product
- Good value
- A wide range of applications
- Lightweight for easy application
- Resistant to chemicals usually found in soil and groundwater
- Can be used vertically
- Resistant to mechanical compression
- Anti root barrier
- Excellent drainage capacity
Typical Physical Properties
Download technical datasheet.
The protection of walls:
The surface area must be waterproofed according to a.b.e.® specification. We recommend the application of heat infused membranes in accordance with a.b.e.® specification. Ensure that the waterproofing membrane is completely covered with abedrain® for maximum protection. Measure the height of the wall including a flap which must be folded back and wrapped around the drainage pipe. Allow an additional 100 mm above the finished ground level before cutting the sheet. Fix the sheet just above the waterproofing membrane with the dimples towards the wall being careful not to damage the waterproofing membrane. The space between the dimples and the wall creates an air chamber allowing air movement to keep the wall dry. Should it be necessary to overlap the sheets then 75 mm would be sufficient (3 dimples).
Apply super laykold® waterproofing tape 100 mm wide along the flat part of the product for this purpose. Place the drainage pipe on the abedrain® after having first placed a layer of drainage material under the pipe.
Cover the pipe with some drainage material to keep everything in place before backfilling. Finish off the abedrain® at least 100 mm above the finished ground level and cover with a counter flashing.
For the protection of roof gardens:
The surface area must be waterproofed according to a.b.e.® specification. This is not a primary waterproofing membrane but is recommended for buried dual layer system applications. The first layer consisting of a 3 mm torch-on will be abedex® unigum followed by an antiroot bituminous membrane such as abedex® AR. Lay abedrain® with the dimples facing upwards. Should it be necessary to overlap, then 75 mm would be sufficient. Apply super laykold® waterproofing tape 100 mm wide along the flat part of the product for this purpose. Where required place a geotextile membrane loosely on top of the abedrain® before spreading out the soil. This is important as the soil would otherwise fill the dimples and thereby reduce water drainage. Spread out the soil according to the instructions of a qualified landscaper.
For the protection of flat roofs and terraces:
We recommend applying a suitable waterproofing membrane such as abedex® unigum prior to laying abedrain®. On top of the bituminous membrane lay abedrain with the dimples upwards. Should it be necessary to overlap, then 75 mm would be sufficient. Apply super laykold® waterproofing tape 100 mm wide along the flat part of the product for this purpose. Place the finishing layer of gravel or concrete tiles on top of abedrain®.
Do not butt-joint sheets.
Install abedrain® as supplied using an overlap of 75 mm between the sheets resulting in an overall coverage of 46,5 m2 per roll.
The protection membrane will be abedrain®, a dimpled high density protection polyethylene membrane as supplied by a.b.e.®
The abedrain® will be applied in accordance with the recommendations of a.b.e.®
In order to guarantee the quality and characteristics of the abedrain® product, it is recommended to use the range of accessories specifically studied for each purpose. Please consult the technical department at a.b.e.®
abedrain® is supplied 12 rolls per pallet and wrapped for protection.
Handling & Storage
The product has no expiry date. Keep out of direct sunlight for extensive periods. No heavy loads are to be placed or packed on top of the product.
Health & Safety
No known hazards.
This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® endeavours to ensure that any advice, recommendation,
specification or information is accurate and correct, the company cannot accept any liability for application – because a.b.e.® has no direct or
continuous control over where and how a.b.e.® products are applied.
Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total
a.b.e.® has a wealth of technical and practical experience built up over the years in the company’s pursuit of excellence in building and construction