Surface Preparation

Surface areas should be dry, clean and sound, free of voids, sharp protrusions or contaminants. The surface shall have a light steel trowelled or fine wood float finish.

Substrate and Falls

Screeds are to be sand cement laid to minimum falls of 1 in 60, strength and thickness as per engineer’s specification. The moisture content is not to exceed 7% prior to torchon application.

Should light weight screeds be employed an additional sand cement screed is to be placed on top of the light weight screed, the strength and thickness as per the engineers specification. Under no circumstances must the torch-on material be applied directly onto the light weight screeds.

Special care must be given to all expansion/construction joints, refer to your a.b.e.® Technical Representative concerned for specific details.

Priming

New Concrete

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

Rejuvenation

Strip existing waterproofing before priming all surfaces with bitu.®prime, 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.

Specification

OR

Full bore outlet’s, pipe up stands to have a square meter of abe® unigum 4mm/Index Fidia P 4mm bonded to the surface including their gussets. All internal and external corners to have a gusset fitted, 100mm x 100mm, using abe® unigum/ Index Fidia P 4mm prior to the commencement of the waterproofing application.

Apply a single a single layer abe® unigum/Index Fidia P 4mm to the floor substrate ensuring the layers are fully bonded to the bitu.®prime primed surface by means of ‘torch fusion’ using propane gas, having side and end laps of 100mm and 150mm respectively.

Apply a single a single layer abe® unigum/Index Fidia P 4mm to the wall substrate ensuring the layers are fully bonded to the bitu.®prime primed surface by means of ‘torch fusion’ using propane gas, having side and end laps of 100mm and 150mm respectively.

The rolls are to run parallel to each other, centrally staggered to prevent joints overlapping.

See data sheet ‘Six Golden Rules’.

Flashing

Counter flashing surfaces are to be treated with 2 coats of super laycryl or super laykold incorporating abe® membrane, details as recommended in our data sheet. Ensure the lap over the torched membrane is at least 150mm.

Protection Layers

All exposed surfaces are to be treated with 2 coats of silvakote as protection layer against UV rays. The coating should be applied 6-8 weeks after the torching process to allow the surface to oxidise slightly thus providing good adhesion of the coating.

Drainage Outlets

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

General

Index waterproofing membranes shall only be warranted when installed by a.b.e.® Construction Chemicals accredited contractors.

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 products are to be applied in accordance with the manufactures 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.® Construction Chemicals endeavours to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® Construction Chemicals has no direct or continuous control over where and how a.b.e.® Construction Chemicals’ products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® Construction Chemicals’ products, whether or not in accordance with any advice, specification, recommendation or information given by the company.

Further Information

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements. a.b.e.® Construction Chemicals has a wealth of technical and practical experience built up over years in the company’s pursuit of excellence in building and construction technology.

Typical Box Gutter Detail

abe-Typical-Box-Gutter-Detail