LL10 Aqua-Repel Dampproofing and LL20 Aqua-Repel Dampproofing

Karnak #LL10 & LL20 are environmentally friendly colorless silane modified siloxane emulsions manufactured for use as masonry water repellents. They are formulated for deep penetration which enables surfaces to shed water effectively.

The active material penetrates into the substrate and condenses to give hydrophobic characteristics to the substrate. The reaction does not substantially affect the water vapor permeability of the treated surfaces.


Karnak #LL10 & LL20 are water repellents designed specifically for use on fresh concrete and similar alkaline substrates. Neutral substrates will require longer curing times to develop similar water repellent characteristics.


  • Fed Spec SS-W-11OC
  • NCHRP 244 Series II


Application of the Karnak #LL10 & LL20 solution should be made onto a clean, dry surface free of oil, grease, dirt, laitance and adhesion-inhibiting materials.


Apply at a rate of 125-175 square feet per gallon.


Karnak #LL10 & LL20 (stir before using) can easily be applied by brushing or spraying until the surface is saturated. Full curing requires 7 - 10 days.

Apply the solution by starting at the top of the structure and working downward. Avoid rundown or drips.Application should be made at temperatures of 40°F and rising.
Examples of application fields:
  • Facades
  • Pre-cast concrete
  • Roadways
  • Bridges Clay tile
  • Field stone
  • Stucco, brick, terra-cotta


Tools and other equipment should be thoroughly cleaned with soap and water immediately after use. Mineral spirits may be needed for clean-up if tools are allowed to dry, taking necessary precautions when handling combustible materials.


LL10 LL20
Active Matter 10% 20%
Density,#/gal 8.3 8.3
VOC (ethanol by reaction) 40 g/l 80 g/l


  • Prevents concrete corrosion by blocking salt penetration
  • Water repellency
  • Effective protection, even in wind-driven rain
  • Good penetration
  • Reduction of salt blooming
  • Non-tacky finish
  • Normally, no visible change of surface
  • Prevents spalling


Absorption Testing of Two Waterproofing Products in Accordance with Federal Specification, SS-W-110C-Water Repellent, Colorless, Silicone Resin Base.

Water Repellant Chart (Absorption vs. Control)
Product Identification Uncoated 24 hr Absorption% Coated 72 hr Absorption, % Absorption Reduction, %
LL10 (10%) 8.4 0.97 88.0
LL20 (20%) 8.3 0.63 92.0

NCHRP 244 Series II Results
Product Identification Chloride Ion (Salt) Intrusion
LL10 (10%) 84%
LL20 (20%) 90%


Do not apply when rain is imminent. Protect from freezing. Coating must be dried before exposure to water. Store in a heated room and keep container covered when not in use. Do not thin.

Keep out of reach of children. Avoid prolonged contact with skin. Wear protective eye wear. Dispose of in an environmentally safe manner. For additional information refer to the MSDS sheet.

Do not store material at extreme temperature, below 32°F (0°C) or above 125°F (50°C) for any length of time.

Karnak #LL10 and #LL20 has a shelf life of 12 months from date of delivery when stored in unopened containers at room temperatures.


Available in 5 gallon pails and 55 gallon drums.

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Kanopy Reflective Roof Maintenance Solutions
  • Reduce Energy Use
  • Lowers Peak Energy Use, reducing energy costs year-round
  • Helps the environment, reduces "Heat Island Effect"
  • Extend the life of the roof
  • Reduces waste. Helps avoid roof tear-off.
  • Economic compared to roof replacement
  • Eliminates interior building operation disruption