BORNIT® Sealing Mortar

ready-mix mortar | wall | floor | joint coves | basement construction
short information
  • ready-mix mortar
  • for making wall/floor joint coves in basement construction
  • for making waterproof plasters
  • after curing water-repellent and frost-resistant
Sealing Mortar
25 kg / bag
sufficient for:
EAN code
euro pallet
approx. 16 - 25 m² at 1 mm layer thickness
4 017228 00460 0
40 bag
  • approx. 1.8 kg/m² per mm of layer thickness
  • approx. 2.5 kg/linear metre of hollow fillet at a radius of 5 cm
storage note
  • dry
  • in originally sealed containers storable for 12 months

complementary products
status technical data sheet
28 September 2021

areas of application
BORNIT® Sealing Mortar is used for executing the connecting fillets between walls and floors in basement construction, for producing sealing plasters, as a waterproof masonry and joint mortar as well as a repair mortar for concrete and masonry.
Adding stick emulsion results in a very good repair mortar for concrete and screed surfaces.

type and properties
BORNIT® Sealing Mortar is a waterproof ready-mix mortar with very good adhesion to the substrate. Simply mixing it with water produces a smooth, well-processable thick mortar, which provides high tensile adhesive and strength values after 24 hours already. After thorough hardening, the mortar is waterproof and frost-resistant. BORNIT® Sealing Mortar complies with EN 998-1.

  • good adhesion to substrates common in construction, also to old structures
  • solvent-free
  • economical and cost-cutting, due to low equipment and material costs and effort
  • waterproof and frost-resistant after thorough hardening

The substrate must be firm, clean and mineral-based.

Processing recommendations:

Mix 25 kg of sealing mortar into 2.5-2.9 l of water + 1 kg of BORNIT® Stick Emulsion.
Upon processing without the stick emulsion, add 1 litre of water more.

Prior to executing the hollow fillet in the basement area, prime with BORNIT® Slurry SF. Upon surface plastering, we recommend applying a coarse plaster layer beforehand. Apply with respective layer thicknesses using a jointer trowel (for fillets) or a trowel (for surface plastering), resp. The mortar remains processable for about 3 hours.

approx. 1.8 kg/m² per mm of layer thickness
approx. 2.5 kg/linear metre of hollow fillet at a radius of 5 cm

product data in brief
product type
waterproof ready-mix mortar
density at +20 °C
approx. 1.30 g/cm³ Bulk density
11.0 - 13.0
after mixing, apply using a trowel
smoothing trowel
processing time
3 hours
thorough hardening time
high strength after 24 hours
in the fresh state with water, in the hardened state mechanically
shelf life
in originally sealed containers storable for 12 months
GISCODE link comp. A
substances hazardous to health in terms of the ordinance on hazardous materials
contains cement, therefore alkaline reactions, for more information see
hazard class according to ADR
Mortar raw density
approx. 1.8 g/cm³
after 24 hours
Compressive strength (24 h)
˃ 10 N/mm²
Flexural strength
˃ 2.5 N/mm²

health and fire protection, occupational safety
To ensure safe handling of the product, the physical, safety, toxicological and ecological information provided online, the information in the current safety data sheet and the additional information on the label must be read and followed before purchasing or using the product! The applicable regulations, ordinances and laws must be complied with.

In case of doubt, please contact the BORNIT® application technology department or the BORNIT® service hotline on +49 375 2795 123.

Can be stored for 12 months in original sealed containers.

disposal note
Only recycle completely empty containers. Material residues can be disposed of according to AVV-ASN: 170101 (concrete).

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



EN 998-1:2010 ZA.1
Normal plaster mortar (R)

Compressive strength after 28 daysCS IV
Capillary water absorptionWO
Tensile adhesive strength≥ 1.5 N/mm² Fracture pattern A/B
Dry bulk density1.5 - 1.8 kg/dm³
Water penetration depthNPD
Coefficient of water vapourµ ≤ 20
Fire behaviourA1


Safety Data Sheet Poison Information Centre , 24h: +49-361-730730

ERFURT - Poison Control Centre Erfurt, Joint Poison Information Centre of the federal States of Mecklenburg-Western Pomerania, Saxony, Saxony-Anhalt and Thuringia; ggiz@ggiz-erfurt.de; www.ggiz-erfurt.de

-     What: name of the substance or product as precisely as possible, etc.
-     How much: as exact a quantity as possible
-     Who: Age, weight, sex and condition of the person(s) concerned.
-     When: Time of the event
-     Where: Place of occurrence
-     How: ingestion, inhalation, skin contact, etc.
-     Why: accidentally or intentionally


No dangerous good in sense of these transport regulations.

Hazard pictograms

signal word

Hazard-determining components for labelling
Portland cement

H315: Causes skin irritation.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P260: Do not breathe dust/fume/gas/mist/vapours/spray.
P280: Wear protective gloves/protective clothing/eye protection/face protection/hearing protection.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P310: Immediately call a doctor.

recommended, personal protective equipment: