Surface Preparation

Surface areas should be dry, clean and sound, free of voids, sharp protrusions or contaminants. The surfaces shall have a wooden trowelled finish. The moisture content is not to exceed 7% prior to torch on applications.


1. New Areas
Prime all surfaces with, including all verges, and around outlets and protrusions and allow the solvent to flash off. Extremely porous surfaces should be re-primed.

2. Rejuvenation
Strip existing waterproofing before priming all surfaces with, including all verges, around outlets and protrusions and allow the solvent to flash off. Some existing waterproofing materials may be overlaid only in consultation with the a.b.e.®  Technical Representative concerned.

  • abedex® unigum 4 mm
  • abe.®drain G

Apply the layer of a abedex® unigum 4 mm, dual reinforced waterproofing membrane, ensuring it is fully bonded by means of “torch on fusion” using propane gas, having side and end laps of 100mm and 150mm respectively.

A minimum of 150 mm sould protrude above finished ground level.

All corners to have a gusset fitted, 100 x 100 mm, apply abedex® unigum 4 mm prior to the waterproofing application.

Drainage / Protective Board

abe.®drain G to be used on the vertical area as a suitable drainage and protection system leading to an agricultural drain to engineer’s details before back filling takes place.


Counter flashing over the balance of the parapet is recommended using super laycryl or super laykold incorporating abe.® membrane, details as recommended in our datasheet. Ensure the lap over the torched membrane is at least 150 mm.

Drainage Outlets

Specific attention must be given to the detail work when waterproofing the outlets to prevent ingress of moisture.


abedex® waterproofing membranes shall only be installed by contractors accredited by a.b.e.®.

Care must always be taken when working with open flames, potential fire hazard, and molten bitumen from the process, employ safety equipment and clothing where necessary.

All the products are to be applied in accordance with the manufacturers instructions.

All relevant data sheets are to be carefully read for additional information.

Important Note

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 – because a.b.e.® has no direct or continuous control over where and how a.b.e.®s products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.®s products, whether or not in accordance with any advice, specification, recommendation or information given by the company.