Waterproofing Materials



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short info

2-component, flexible sealing slurry for mineral sealing of buildings in areas in contact with soil, under tiles and surface pavements indoors and outdoors, for example on terraces and balconies, perfectly suitable for water-tight and wear-resistant coating of concrete elements, e.g. rainwater retention basins, etc., bridges hair-line and shrinkage cracks. With general  building authority test certificate.

Colour: grey

4 017228 004594 6900002694 33 kg
25 kg powderand
  8 kg liquid-component

40 bags
40 canister
approx. 3.6 kg/m² depending onlayer thickness
tests / CE declaration of performance
BORNIT®-Elastikschlämme - 25kg

detailed information

Areas of application
BORNIT® Slurry EL serves waterproofing against ground moisture, non-pressing water, for the base area and for base point and cross-sectional waterproofing. BORNIT® Slurry EL is used, e.g., for terrace and balcony waterproofing prior to tiling, for protecting concrete surfaces, for waterproofing water tanks as well as for waterproofing swimming pools, wet and moist rooms under tiles.
BORNIT® Slurry EL is not suitable for waterproofing against water loads acting on the rear.

Type and properties
BORNIT® Slurry EL is a cementitious, two-component, crack-bridging surface coating with good adhesion on concrete, masonry and plaster, which with its flexible properties is particularly suitable for substrates at risk of crack formation. After drying, the product is waterproof, crack-bridging, abrasion-resistant as well as resistant to water aggressive to concrete.

Product advantages
• crack-bridging
• solvent-free, hence environmentally friendly
• easy to process

The substrate must be clean, firm and free from separating substances, oils and greases. Voids and depressions must be eliminated. Masonry must be fully grouted. Absorbent substrates must be primed with BORNIT® Basic Primer. Non-absorbent substrates are pre-wetted slightly damp. Standing water must be removed. Shrinkage holes must be filled.

Upon processing BORNIT® Slurry EL, in principle, the current “Guideline for planning and execution of waterproofing of building components in contact with the ground with flexible sealing slurries” must be observed. BORNIT® Slurry EL is not suitable for waterproofing against water loads acting on the rear. Processing must not be undertaken at ambient and substrate temperatures below +5 °C or above +30 °C. The two components are delivered in containers holding the respectively required quantities. The mixing ratio of liquid component: powder component is approx. 1 part by weight: 3 parts by weight, i.e., 25 kg of the powder component have to be mixed with 8 kg of the liquid component. Add the powder component to the liquid (not vice versa) and mix them into a homogeneous and lump-free compound using a slow-running agitator with stirring paddle. Do not stir too much air into the compound. The pot or processing time, resp., is approx. 1 hour. For surface waterproofing, apply the ready mixed material to the substrate in at least two coats using a wide brush, trowel or smoothing trowel. In case of substrates at risk of crack formation, for wall/floor connections and in corner areas, embed BORNIT® Glass Fabric 165 centrally into the first layer. In order to achieve particularly smooth surfaces, the surface must be smoothed with a slightly moistened rubber slider or the like. Depending on the weather, the thorough hardening period is approx. 1 to 3 days. During this time, the fresh coating must be protected from rain, other water loads and frost. In case of permanent solar irradiation, discolouration is possible.

Approx. 3.6 kg/m²
Ground moisture and non-pressing water:    2 mm of dry layer thickness = 3.6 kg/m²
Splash water at the wall base:                    2 mm of dry layer thickness = 3.6 kg/m²
Base and cross-section sealing:                 2 mm of dry layer thickness = 3.6 kg/m²

Technical data

Type Flexible sealing slurry
Basis Two-component system
Solvents None
Colour White
Density Component A:    1.1 – 1.3 g/cm³
Component B:    1.03 g/cm³
Consistency After mixing, suitable for trowel application
Application Smoothing trowel
Pot life Approx. 1 hour
Thorough hardening time 1 to 3 days
Minimum layer thickness 2 mm
Storage Cool, but frost-free
Shelf life 12 months
Cleaning In the fresh state with water, in the hardened state mechanically
Substances hazardous to health in terms of the ordinance on hazardous materials Contains cement, therefore alkaline reactions; for more information see “Health and fire protection, occupational safety”
Hazard class according to VbF and ADR None
GISBAU product code powder BZM 1
GISBAU product code mixture BZM 2


System products
BORNIT® Basic Primer
BORNIT® Glas Fabric 165

The product must be stored cool, but frost-free. In originally sealed containers storable for 12 months.

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

Forms of delivery
Component A    25 kg    paper bag (powder)………......................    40 bags per pallet
Component B    8 kg     canister (liquid)……………………...……..    40 containers per pallet

Component A: Only recycle completely empty containers. Material residues can be disposed of according to AVV-ASN: 170101 (concrete).
Component B: Material residues can be disposed of according to AVV-ASN: 070208* (other reaction and distillation residues).

CE marking

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

EN 1504-2:2004: ZA.1d and ZA.1e
Product for protection and repair of concrete structures,
surface protection product – coating, protection against penetration of substances (1.3), moisture management (2.2)

Linear shrinkage NPD
Thermal expansion coefficient NPD
Cross-cut test NPD
CO2 permeability sD > 200 m
Water-vapour permeability sD = 21,2 m (Class II)
Capillary water absorption and
water permeability
w = 0,016 kg/m² x  h0,5
Freeze-thaw resistance
with de-icing salt impact
No cracks, bubbles,
detachment / adhesive strength: MW = 1,5 N/mm² (kEW = 1,2 N/mm²)
Resistance against temperature shock NPD
Resistance against chemicals NPD
Crack-bridging capability A 2
Tear-off test for assessment of
adhesive strength
MW = 1,4 N/mm² - (kEW = 1,2 N/mm²)
Fire behaviour Class Efl
Grip NPD
Artificial weathering NPD
Antistatic behaviour NPD
Adhesive strength on wet concrete NPD
Hazardous substances NPD


This datasheet replaces any 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 changes in the information contained in this datasheet anytime.


Stock Note
Stock Note


Necessary information – particularly for the use and the use of our products – please refer our brochures. We are at your personal disposal.