Chemforce logo

Potassium silicate densifier for concrete.




Product Technical Benefits


Product Applications


Pack Sizes


How to Use

1. Read full Product Data Sheet before using Forti-Kal™
2. Test on an inconspicuous area and allow to dry to check the result.
3. Ensure the concrete is dry inside before applying. If applying on freshly poured (green) concrete, it is recommended to give the concrete a minimum 2 hours cure time before applying.
4. Apply when surface temperature is above 2°Celsius (36° F) and below 27°Celsius (80°F).
5. Apply generously and evenly with a pump sprayer, so the surface remains glistening wet for at least 2 minutes. AVOID POOLING.
6. DO NOT over apply – all of the product should penetrate without leaving any excess on the surface. If product all penetrates within 5 minutes, apply more.

7. How much Forti-Kal™ to use:

a)  As a primer / curing agent / moisture barrier / anti-dusting treatment – it is important to get enough product into the pores. Minimum 2 coats recommended.
b)  For optimal polished concrete, impregnate twice:

i. First impregnation – after grinding with 80 to 100 grit metal-bond pad. If the first coat penetrates within 5 minutes, apply a second lighter coat (and further coats if necessary).
ii. Second impregnation – after 400 grit resin bond pad. If it is not penetrating well, dilute 2 parts Forti-Kal™ to 1 part water.
iii. Allow treated surface to cure for minimum 4 hours before grinding. Forti-Kal™ cures faster than sodium, potassium, lithium densifiers, but longer cure = harder = more shine.
iv. For the best results, try Forti-Col™ new technology colloidal silica densifier.

8. Application rate PER COAT: approximately 6 to 15m2 / L (240 to 600 square ft / G) depending on concrete density and porosity.

9. Recommended Dilution: Forti-Kal™ is a ready-to-use out of the container.
For freshly poured or dense concrete, Forti-Kal™ can be diluted a little more – 2 parts Forti-Kal™  to 1 part water (no more than 1 part Forti-Kal™ to 1 part water).



Spillage – Take up mechanically or with absorbent material such as sand, earth or vermiculite.



TDG UN Status: This material is not regulated as a hazardous material for transportation.


Shelf Life and Storage Guidelines

Best within 2 years of manufacture date.
Store away from direct sunlight.
Keep container tightly sealed, in a well-ventilated place, at 36 – 900 Fahrenheit of 2 – 320 Celsius


Technical Data


Country of Manufacture