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BORNIT® 1C Bitumen Thick Coating

bitumen | thick coating | foundation | structural waterproofing | wall | PMBC
BORNIT
Short information
  • particularly easy trowel application due to low material weight
  • sprayable with suitable equipment
  • highly flexible due to high-quality polystyrene and polymer modification
  • immediately ready for processing without mixing
  • waterproof and crack-bridging after thorough drying
  • with fully and flushly grouted masonry, no plaster layer required
  • no seams as with films or sealing sheets
  • adheres insulating panels to concrete, masonry and thoroughly dried thick coatings
  • solvent-free, hence environmentally friendly
Product
Colour
Content
1C Bitumen Thick Coating
black
12 ltr. / bucket
sufficient for:
Order-No.
EAN code
euro pallet
approx. 2.7 m²
6900002648
4 017228 00407 5
48 bucket
1C Bitumen Thick Coating
black
32 ltr. / bucket
sufficient for:
Order-No.
EAN code
euro pallet
approx. 6.4 - 7.1 m²
6900002647
4 017228 00408 2
18 bucket
Consumption
  • approx. 4.3 l/m² depending on water impact class
  • insulating panel adhesion: approx. 2 l/m²
Storage note
  • frost-free without fail!
  • in originally sealed containers storable for 12 months

Status technical data sheet
12 January 2021

Areas of application
BORNIT® 1C (Thick Bitumen Coating) is used for permanent, flexible external waterproofing of building structures in the area in contact with the ground and is applied with a trowel or spraying equipment. The product is suitable for application on horizontal and vertical surfaces.
BORNIT® 1C (Thick Bitumen Coating) can also be used for intermediate waterproofing (under screed) of floor slabs, balconies and terraces as well as for adhering rigid-foam insulating panels to bituminous and mineral substrates in the area in contact with the ground.
BORNIT® 1C (Thick Bitumen Coating) adheres well to all dry and mineral substrates as well as bituminous substrates with sufficient stability (e.g. old cold and hot coatings or thick coatings).

Type and properties
BORNIT® 1C (Thick Bitumen Coating) is a single-component, polystyrene-filled and polymer-modified thick bitumen coating (PMBC) based on a bitumen emulsion. The product is solvent-free and environmentally friendly. Following thorough drying, a firm, yet still flexible and waterproof foundation coating results due to evaporation of the water content in the emulsion. The paste-like and stable consistency of the material enables application of high layer thicknesses in one go. The coating is flexible, crack-bridging and resistant to any aggressive substances occurring in natural soil. BORNIT® 1C (Thick Bitumen Coating) is suitable for waterproofing according to the current DIN 18533 W1-E and W4-E.

Advantages
  • particularly easy trowel application due to low material weight
  • sprayable with suitable equipment
  • highly flexible due to high-quality polystyrene and polymer modification
  • immediately ready for processing without mixing
  • waterproof and crack-bridging after thorough drying
  • with fully and flushly grouted masonry, no plaster layer required
  • no seams as with films or sealing sheets
  • adheres insulating panels to concrete, masonry and thoroughly dried thick coatings
  • solvent-free, hence environmentally friendly

Surface
Step 1: The substrate must be free from ridges or sharp-edged unevennesses as well as soil.
Step 2: Unfilled or badly filled depressions like masonry joints, mortar pockets or surface defects larger than 5 mm must be repaired with suitable mortar. With fully and flushly grouted masonry, no plaster layer is required. Voids smaller than 5 mm as well as pores in the substrate can be closed by applying a thick layer of bitumen coating in a scraping manner. Especially for concrete surfaces, application in a scraping manner is likewise recommended in order to avoid the formation of bubbles.
Step 3: It must be observed that the substrate is firm, clean, free from dust and free from separating substances. The substrate should be dry and absorbent. The surface temperature must be at least 3 Kelvin above the dew point temperature of the ambient air.
Step 4: A pre-coat with BORNIT® Basement Primer or BORNIT® Unibit (1:2 diluted with water) must be applied onto the substrate. For solidification of sanding substrates, priming with BORNIT® Solidificator SB3 (diluted with clean tap water in the mixing ratio 1:1) is recommended. Upon application of the thick bitumen coating in a scraping manner, the primer must be applied in advance. A scratch coat does not replace the primer. After drying of the primer, the substrate is prepared for application of the scratch coat or the thick coating, resp.
Important: During the construction phase, thick bitumen coatings can be damaged by water affecting their rear side. In principle, it must be ensured that the coating is not damaged by water affecting the adhesive side. If necessary, water-impermeable intermediate layers of mineral waterproofing slurry (e.g. BORNIT® Slurry SF) must be applied, which cannot be detached from the substrate by water pressure.

Processing
Upon processing BORNIT® 1C (Thick Bitumen Coating), in principle, the current DIN 18533 must be observed. The processing of PMBC depends on the respective water impact class at the building object. Therefore, it must be observed that the water impact class present is clearly specified by the planner prior to the start of any work. BORNIT® 1C (Thick Bitumen Coating) is delivered ready for use and applied to the substrate prepared as stated above with a notched trowel, smoothing trowel or suitable spraying equipment. BORNIT® 1C (Thick Bitumen Coating) must not be applied in case of frost or impending rain. Application should be undertaken at object and ambient temperatures above +5 °C and not exceeding +30 °C. Application of the thick coating is undertaken according to the current DIN 18533 in two layers. In case of waterproofing against ground moisture and non-pressing water (DIN 18533 W1-E), the layers can be applied fresh on fresh. According to the current DIN 18533, hollow fillets must be formed using a mineral material (BORNIT® Sealing Mortar) as an approx. bottle diameter-sized hollow fillet or with a 2-component thick coating (BORNIT® Repabit, quick-drying) prior to the surface sealing. As a deviating, yet innovative and secure problem solution, here we recommend the use of BORNIT® Triangle Tape (bitumen profile, fusible) as an alternative. Special attention must be paid to the proper execution of the waterproofing in the area of joints, connections and terminations as well as penetrations.

The fresh coating must be protected from rain and strong solar irradiation!
The waterproofing layer must be protected against damages. Protective and drainage layers, however, must only be applied after complete and thorough drying of the waterproofing layer (depending on the weather, 3 to several days). BORNIT® 1C (Thick Bitumen Coating) can be used to adhere insulating panels. Suitable protective layers are, e.g., dimpled plastic sheeting with sliding film and filter fleece as well as thermally or bituminously bound seepage panels. Subsequently, the construction pit can be filled. In that, DIN 18533-1, Point 14 must be observed.

Consumption
• water impact class W1-E and water impact class W4-E

approx. 4.3 l/m² = wet layer thickness 4,3 mm = dry layer thickness 3.0 mm

• insulating panel adhesion: approx. 2 l/m²

The stated consumption figures are empirical values based on practical experience. The layer thickness allowance according to DIN 18533-3 must be taken into account.

Layer thickness control
According to the current DIN 18533 W1-E, a layer thickness check in the fresh state (wet layer thickness) at the execution object as well as an inspection of the thorough drying state at a reference sample located in the construction pit (e.g. brick) must be performed. water impact class W1-E and W4-E Minimum dry layer thickness: 3 mm

Product data in brief
Product type
single-component, polystyrene-filled and polymer-modified thick bitumen coating compound
Base
bitumen emulsion
Solvent
none
Density at +20 °C
approx. 0.65-0.68 g/cm³
PH-value
11,0 - 11,5
Consistency
paste-like, suitable for trowel application
Colour(s)
black
Application
smoothing trowel, spraying equipment
Processing temperature (ambient and substrate)
not below +5 °C and not above +30 °C
Thorough hardening time
3 to several days, depending on air humidity, temperature, layer thickness and substrate
Cleaning
in the fresh state with water, in the hardened state with BORNIT® MultiClean Spray, BORNIT® MultiClean or BORNIT® Bitumen Cleaner
Storage
frost-free without fail!
Shelf life
in originally sealed containers storable for 12 months
GISCODE
BBP10
Substances hazardous to health in terms of the ordinance on hazardous materials
none
Hazard class according to ADR
none

water impermeability
waterproof according to slit pressure test acc. to DIN 52123
possible layer thicknesses
up to 8 mm
Gefrierpunkt
ca. 0 °C

Health and fire protection, occupational safety
For information on handling, safety and ecology, please refer to the current safety datasheet.

Storage
BORNIT® 1C (Thick Bitumen Coating) must be protected from frost! Heat exposure above +30 °C and direct solar irradiation must be avoided. Shelf life in the originally sealed container 12 months.

Disposal note
Only recycle completely empty containers. Material residues can be disposed of according to AVV-ASN: 080410 (adhesive and sealing compound residues, except for those falling under 080409).

Note
The above information replaces all previous technical information about the product. Thus, this information is no longer valid. The details have been compiled according to the latest state of application technology. Please observe, however, that, depending on the state of the construction object, deviations from the method of application suggested in the datasheet may be required. Unless agreed otherwise in individual contracts, any information contained in the datasheet shall be non-binding and thus does not represent an agreed product constitution. We reserve the right to any changes in the information contained in this datasheet anytime.

1023 / 0432

BORNIT-Werk Aschenborn GmbH
Reichenbacher Straße 117
D-08056 Zwickau

2014

10010-10011/2016

EN 15814:2011+A2:2014
Polymer-modified thick bitumen coating
for waterproofing building components in contact with the ground
PMB - CB2-W2A-C1

WatertightnessW2A
Crack-bridging capabilityCB2
Resistance to waterPassed
Flexibility at low temperaturesPassed
Dimensional accuracy at high temperaturesPassed
Fire behaviourClass E
Compressive strengthC1
Durability of watertightness and fire behaviourPassed
recommended, personal protective equipment: