Derbigum CG
Manufactured in SA
for SA conditions
page 1 of 2
Waterproofing Membranes for Tanking and Buried Work
The Derbigum CG (Civils Grade) range of products, has been designed to meet the specific requirements for waterproofing
in buried and covered situations.
Fields of application
Uses
The CG range has been designed and developed for
waterproofing in situations such as:
• Underground Tanking
• Retaining Walls
• Roof Gardens
• Planters
• Parking Decks
• Under paving or tiles
CG2
CG3 & CG4
CG4H
CG2 is a non-waterproof
membrane that is used
as a slipsheet, protection
sheet, or separation
layer. CG2 may
be either bonded or
mechanically fixed by
means of clout nails and
roofing washers.
Because of its many
attributes, together
with its excellent tear
resistance CG3 performs
as an ideal underlay
for Derbigum CG4 or
Derbigum SP4 in roofing
applications.
CG4H has root growth
inhibitors added to the
APP matrix. Used in
horticultural situations.
Note: Plant types
with non-aggressive,
noninvasive root systems
to be used.
Presentation
Features
The Derbigum CG range of products comprises of an APPmodified bitumen matrix which has been combined with
a composite core of polyester and glass fibre.
Thickness
Width (± 1%)
This composite carrier imparts high tensile strength and
dimensional stability. It is centrally located in the sheet’s
thickness which results in greater flexibility and ease of torching
on either side of the sheet. In the two-layer CG system this
assures homogenous bonding, both at laps and to each other.
In a tanking or buried situation, the CG System should be
specified as a double layer combination, comprising of one
layer CG3 and one layer CG4, fully bonded by means of torch
fusion, so as to provide your best protection. Depending on the
circumstances and limited risk requirements, either Derbigum
CG4 or CG3 may be used in a single layer application.
CG2
CG3
CG4
CG4H
2 mm
3 mm
4 mm
4 mm
1000 mm
1000 mm
1000 mm
1000 mm
Length - roll (± 1%)
10 m
10 m
10 m
10 m
Weight - per meter 2
(approximate)
± 2.1 kg/m2
± 3.2 kg/m2
± 4.2 kg/m2
± 4.2 kg/m2
± 21 kg
± 32 kg
± 42 kg
± 42 kg
≥ 100 g/m2
≥ 100 g/m2
120 g/m2
120 g/m2
Weight - per roll
(approximate)
Polyester and glass
CG4 Physical Properties
(minimum performance characteristics)
Tensile Strength
100 mm
Longitudinal 380N
Transverse 280N
Longitudinal 50%
Transverse 60%
Longitudinal 50N
Transverse 50N
Tensile Elongation
Tear Strength
Specifications are subject to change without notification.
Results shown reflect the minimum peformance required and show the typical test procedures used.
Actual field performance will depend on installation methods and site conditions.
Flexibility
Die No. C ASTM D624
Derbigum CG was formed over mandrels
diameter 100 mm, 50 mm and 20 mm at 0°C.
Cracking of the surface occurred over 20 mm mandrel only.
www.derbigum.co.za
Available from Waterproofing Centres countrywide
Cape Town
Tel 021 448 7880
Fax 021 448 7897
Gauteng
Tel 011 608 0317
Fax 011 608 0347
Durban
Tel 031 569 3963
Fax 031 569 1849
Port Elizabeth
Tel 041 365 2936
Fax 041 365 6475
Manufacturing Plant
Tel 011 868 1028
Fax 011 900 2015
Brackenfell
Tel 021 981 8343
East London
Tel 043 722 5676
Fax 043 722 5676
George
Tel 044 874 3905
Fax 044 874 3907
Nelspruit
Tel 013 752 4409
Fax 013 752 6556
Margate
Tel 039 312 2764
Fax 039 312 2673
Derbigum CG
Manufactured in SA
for SA conditions
page 2 of 2
Waterproofing Membranes for Tanking and Buried Work
Application
Cross Section of Derbigum CG
• Installation by Approved Derbigum Contractors (ADC’s)
countrywide.
• Ensure that all surfaces to receive the waterproofing
application are in a dry, sound, smooth and even condition,
free of voids and protrusions.
• Coves or fillets are to be installed at all internal angles. External
angles should be rounded or arrised.
• Apply Bitumen Primer to concrete and screeded surfaces to
receive waterproofing.
• Side laps should be a minimum of 100mm for standard
application and 150mm for tanking and fully bonded by means
of ‘torch-on’ fusion.
Safety
• Normal hygiene procedures.
• Wash hands thoroughly with soap and water or a proprietary
hand-cleaner prior to eating or smoking.
Storage
•
•
•
•
•
Rolls must be transported in a vertical position.
Store upright in a cool, dry place.
The floor must be regular and free of sharp objects.
Derbigum CG should not be exposed to UV for long periods.
Do not double stack, unless properly separated.
Composite Core of
Polyester and Glass Fibre
version 001-201311
Disclaimer: The use of this product is beyond the manufacturer’s control and liability is restricted to the replacement
of proven material defects. The manufacturer is not responsible for any loss or damage arising from incorrect usage.
Specifications are subject to change without prior notice.
www.derbigum.co.za
Available from Waterproofing Centres countrywide
Cape Town
Tel 021 448 7880
Fax 021 448 7897
Gauteng
Tel 011 608 0317
Fax 011 608 0347
Durban
Tel 031 569 3963
Fax 031 569 1849
Port Elizabeth
Tel 041 365 2936
Fax 041 365 6475
Manufacturing Plant
Tel 011 868 1028
Fax 011 900 2015
Brackenfell
Tel 021 981 8343
East London
Tel 043 722 5676
Fax 043 722 5676
George
Tel 044 874 3905
Fax 044 874 3907
Nelspruit
Tel 013 752 4409
Fax 013 752 6556
Margate
Tel 039 312 2764
Fax 039 312 2673