COMBIFLEX®-C2/S - Schomburg

SCHOMBURG GmbH & Co. KG
Aquafinstrasse 2–8
D-32760 Detmold - Germany
phone + 49-5231-953-00
fax + 49-5231-953-108
mail export@schomburg.de
www.schomburg.de/en
Technical Data Sheet
COMBIFLEX ® -C2/S Art.-No. 2 05017
Two component high build bitumen coating
for spray application (to factory specification)
Properties:
• Seamless, jointless, flexible
crack-bridging waterproof
membrane
• Suitable for all conventional
substrates
• Can also be used on matt
damp substrates without
priming
• Quickly rainproof
• Rapid curing
• Simple and efficient application
• Radon barrier
• Cationic emulsified
• Solvent free
• Waterproof material to DIN 18195-2
• Certified for waterproofing of concrete
joints in strips
Areas of application:
COMBIFLEX-C2/S is suitable for waterproofing ground
covered building components such as e.g. cellar walls,
foundations, floor slabs or screeds, dependent on the
severity of the wet duty conditions:
• Ground moisture
• Seepage water
• Pressure water
Technical Data:
Basis:
Application/substrate
temperature:
P-2002-4-125/02
bautest Dresden
2 component polymer
modified high build bitumen
coating
+5° C to +35° C
Lower temperatures extend,
higher temperatures reduce
curing times
Reaction time: approx. 10 sec.
Crack bridging: min. 2 mm to DIN 28052-6
Water impermeability: passed to DIN 52123
(slit pressure 1mm)
Material consumption:
• Ground moisture, non-standing seepage water:
4.0 l/m² = approx. 2.5 mm dry film thickness
• Standing seepage water:
6.0 l/m² = approx. 4.0 mm dry film thickness
Greater material consumption for uneven substrates
is not considered.
Packaging:
Storage:
Cleaning materials:
28, 180 and 1000 l
containers
6 months when stored frost
free in the original unopened
containers. Use opened
containers promptly.
Clean tools immediately with
water or AQUAFIN-Cleanser.
Dried on material can only be
removed with difficulty.
Substrate preparation:
The substrate must be frost free, load bearing, flat with
an open-pored texture and have a closed surface.
It must be free from gravel pockets, cavities, gaping
cracks, ridges and be free from adhesion inhibiting
substances such as dust, laitance and loose parts.
Undulations > 5 mm as well as mortar pockets,
rendering grooves in brickwork or dense concrete
blocks, open masonry work joints, voids, substrates with
large pores or uneven masonry work are to be levelled
up beforehand. Corners and edges are to be rounded
or, with concrete sections, to be chamfered post
installation. Mechanically remove laitance at the wall/
floor transition.
Internal corners, wall/floor junctions,
separating joints:
Apply AQUAFIN-RS300 or AQUAFIN-2K/M by brush
or with a 4-6 mm notched trowel to the prepared
substrate at a width 2 cm wider than the joint tape.
Then, without folds or voids, lay the ASO-Joint-Tape-
2000/2000-S into the fresh coat. The joint tape must
be bonded in such a way as to exclude water migration
to the rear of the ASO-Joint-Tape-2000/2000-S. With

structural movement joints, which penetrate the slab,
lay the ASO-Joint-Tape-2000/2000-S in a loop.
Alternative to the ASO waterproof tape system
(production of a mineral-based coved fillet):
Slurry coat the substrate with AQUAFIN-1K and whilst
still wet construct a coved fillet of minimum side length
4 cm, using ASOCRET-RN or a cement mortar (MGIII)
with the addition of ASOPLAST-MZ. To protect against
rear moisture ingress coat the area min. 20 cm
above the foundation slab with AQUAFIN-RS300 or
AQUAFIN-2K/M and continue down min. 10 cm
over the front edge of the slab. Where there is exposure
to standing seepage water/water under pressure,
the waterproofing must be continued down for a
min. 15 cm.
Penetrations:
Prepare the area around the penetration and bond
an ADF pipe gasket or ADF floor gasket with
AQUAFIN-RS300 or AQUAFIN-2K/M and once fully
dried, blend in with the surface waterproof membrane.
Where there is exposure to seepage water not under
pressure or standing seepage water, use a bonded,
lapped or integral flange and blend in with the
waterproof membrane.
Transition between splash contact / skirting area:
In the area where there is splash water contact, continue
the waterproofing to a minimum of 30 cm above
the ground. Dependent on the ground contours, the
waterproofing must reach a minimum of 15 cm above
the top edge of the ground. As a rule this transition is
coated with a flexible mineral-based waterproof slurry
such as e.g. AQUAFIN-RS300 in order to produce
a bonding substrate for e.g. skirting renders etc. The
polymer modified bitumen coating is overlapped here
by a min. 10 cm.
Product preparation:
COMBIFLEX-C2/S is sprayed using suitable equipment
such as e.g. HighPump M8 (peristaltic pump).
Information can be obtained from HTG HIGH TECH
Germany GmbH, Berlin, www.hightechspray.de.
Without priming, apply COMBIFLEX-C2/S according
to the relevant manuals. Apply the thickness appropriate
to the severity of the wet duty conditions homogenously.
With applications against pressure water, a two coat
application is necessary. We recommend to apply an
ASO-Systemvlies-02 onto the fresh COMBIFLEX-C2/S
without overlaps and to smooth off with either a steel
float or tar brush. The ASO-Systemvlies-02 is generally
used with concrete structures.
External waterproofing in strips of concrete joints:
The waterproofing is applied in strips onto the clean
surface, minimum width 15 cm on both sides of the
joint. The waterproofing is applied in two coats with a
material consumption of 6.0 l/m². Into the first coat a
reinforcing fabric is to be placed. The second coat can
applied when the previous is not to become damaged.
Onto the fresh finished layer an ASO-Systemvlies-02
is to be laid. In the wall/floor transition area the
waterproofing is to be continued down for a min.
15 cm. at the front side.
Checking the waterproof membrane:
Checking and documenting the film thickness must
always be carried out. If used against standing seepage
water and pressure water a measurement of wet and
dry film thickness should be carried out and recorded.
The thickness checks are carried out whilst still wet by
measuring the wet film thickness (recommended: min.
20 measurements per site or min. 20 measurements for
100 m). The spread of the measurement points should
be diagonal. Dependent on structural factors, increase
the measurements around penetrations, transitions,
connections/junctions.
Drainage and protection boards:
Waterproof membranes are to be protected from
weathering and mechanical damage by suitable
protective measures or coatings. Protective layers may
not exert any point or linear loading on the membrane.
Therefore dimpled or corrugated sheets are not suitable.
Only install protective layers once the waterproof
membrane has fully dried out. Protective and drainage
boards (e.g. INA Schutz- und Drainelement) can
be fixed on liquid battens with COMBIDIC-2K with
perimeter insulation being fully bedded and butt jointed.

Back-filling the building pit:
Back-filling the building pit is carried out once the high
build bitumen coating has fully dried out. Filling must
be in accordance with relevant guidelines. The backfill
material is to be introduced in layers and compacted.
Ensure that the protective layer is not damaged or does
not slip.
Advice:
• Protect areas not being treated with
COMBIFLEX-C2/S.
• Bitumen coatings cannot stand negative hydrostatic
pressure. In areas where this is expected, a protective
coating of AQUAFIN-1K must first be applied.
• Protect masonry work capping and open window
parapets from penetrating water.
• In accordance with recognised technical
regulations undertake waterproofing measures with
AQUAFIN-RS300 or AQUAFIN-2K/M beneath rising
walls and on the base slab.
• The required wet film thickness may not be exceeded
by 100% and may not fall below the required
minimum at any point.
• Protect COMBIFLEX-C2/S from weathering e.g. rain,
frost, strong sunshine etc., until fully dried out.
• This data sheet has been compiled based on
SCHOMBURG factory specifications.
Please observe a current valid EU Health &
Safety Data Sheet.
GISCODE: BBP 10
This technical data sheet does not consider local building codes or legal requirements. It shall be used as general reference for the product, based on our current knowledge
and experience. Legally binding is only the latest Data Sheet from one of our foreign subsidaries inside their sales territory. In any case of uncertainty please consult our
technical department for further information.
03/13 SF/CoS/PE/JD