Product specification: Pure and Natural Hydraulic Lime (NHL). Contains no additives.
Conforms to European Norms (EN 459) and French Norm NFP 15.311
Strength factor: 3.5 (Moderately hydraulic)
Residue @ 0.09 mm: 6.5%
Density (volumetric weight) : typical 40.6lbs/ft3
Available (free) lime after slaking Ca(OH)2: 25% +
Packing: 55lb. Bags
Whiteness index: 72 
Surface cover 274 sq.ft./oz
Expansion : < 3/64"
Residue of quick lime after slaking: < 1%
Shelf life: 8-12 months kept sealed and dry  

MORTARS
Compressive strength    PSI
  
 Elasticity Moduli (Mpa)
MIX RATIO 
EN459* 
1 : 2
  1 : 2.5
1 : 3
  
1  :  2
1 : 2.5
1 : 3
                 
7   DAYS     109 83 77  
 
  
 
28 DAYS  
3.5*
 273 213 194  
  9010
  9000 
   8070
6   MONTHS   1029 774 571  
15260
13501
12450
12 MONTHS       1087 855 565  
15280
13620
13150
24 MONTHS   1251 870 576  
17480
13785
13670
Consumption for 1cu. yd
of mortar   lbs. +/- 10%  		  514 411 364        
* Incoming European Norm EN 459 ( mortar ratio 1:1.3 with ISO 679 Sand) 

Mixing: can be mixed in regular mortar mixers.

Application by spray gun: possible. Please consult us.

Working temperatures:  not below 40oF or above 85oF. Make sure that high suction materials are thoroughly dampened before application. Avoid rapid drying due to high temperatures or strong winds by curing with a light water mist several times a day if necessary.Protect from frost, rain, direct sun and strong wind for a minimum of 72 hours.
SUITABLE FOR LATH WORK / LIME CONCRETE/INJECTION/GROUTING  see relevant sheets.

Reworking: possible within 12 hours.



Mortar composition:MASONRY/POINTING/ CAPPING/ BEDDING/ ASHLAR

Binder: sand ratio: from 1:1.5 to 1:3 depending on the support/background conditions, the size of the joint and the fineness of the sand. Always use well graded sands ( #6 down to #200). 
See also “General Guidelines – Sands for NHL mortars”.

RENDERING 
A. Pricking up coat (if required) (1/8"-3/16")

1 VOLUME NHL 3.5 : 1.5  VOLUMES of SAND Cast on.

B.  Undercoat       (5/8"-3/4") 1 VOLUME NHL 3.5 :   2    VOLUMES of SAND*
C.  Finishing          (3/16"-3/8") 1 VOLUME NHL 3.5 :   2.5 VOLUMES of SAND
With very fine sands possibly containing clays the binder content may have to be reduced.

*At this dosage the consumption is approx. 2.05lbs of NHL 3.5 per sq. yd. for each 1/8" thickness.

Please also refer to General Guidelines: NHL Renders.


The above details are given for information purposes only. Final dosages and application should be checked with our technicians. The Factory reserves the right to alter specifications.