Natural Hydraulic Lime 3.5


$35.55 $39.50


Calcidur® NHL 3.5

Technical Data

Product Brochure

Mixing Ratio

1 part NHL to 3.5 part sand maximum


25 kg


CALCIDUR® NHL 3.5 is a natural hydraulic lime acc. to EN 459-1. It is produced through burning and staking a specifically selected shell limestone. The stabilizing process of CALCIDUR® NHL 3.5 is effected through carbonation and hydraulic hardening. CALCIDUR ® NHL 3.5 is free from cement!


• historic, cement- and gypsum-free natural hydraulic binder

• high sulfate resistance

• low-tension hardening process

• very good subsequent hardening properties

• no penetration of damaging salts into the masonry

• high elasticity and water retention capacity in mortar produced

• very good side adhesion at stone

• low elasticity module


For the production of plaster- and brick mortar in ecological,biological building construction, in the restoration and preservation of historic buildings.


Dry, if possible on wooden shelves and protected against draft.

Technical data

Bulk density: approx. 0.55 kg/dm3

free CaO: approx. 32%

SO3: approx. 0.4 %

Compression strength ( acc. to EN 459-2):

28 days: approx. 4.8 N/mm2

6 months: approx. 8.5 N/mm2

12 months: approx. 10.5 N/mm2

Safety instructions

CALCIDUR ® NHL 3.5 reacts strongly alkaline with water, thus: Protect skin and eyes, rinse thoroughly with water in case of contact, immediately contact doctor in case of eye contact.

Quality-monitored production

CALCIDUR® NHL 3.5 is continuously tested in our plant laboratory within the scope of our in-house monitoring with respect to the fulfilment of composition and properties. This will ensure a uniform quality of the product. CALCIDUR ® NHL 3.5 has the quality certificate „Building lime“ and is certified acc. to EN 459-1.