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EXCEL Coating’s Water Repellent Exterior Coat (EXCEL NanoSeal) is a water based fast curing 45 % to 50% active nano particles, based on metal oxides, used for imparting a colorless water repellent surface finish to mineral construction material / stone surfaces without significantly reducing water vapor permeability. It is suitable for coating painted surfaces too, as this does not impart any color change to the substrate. EXCEL NanoSeal forms an excellent weather coat for all types of cement and stone surfaces. EXCEL NanoSeal provides water repellence within 8 hour of application. The water repellence further improves over 48 hours after application.
In the surface treated with EXCEL NanoSeal, the drop of water is repelled and stands in the form of bead and does not penetrate inside. The pores on the surface may vary from 5 – 200 nm. But the size of EXCEL NanoSeal is 4 – 6 nm (0.005 micron). When the building materialscome into contact with water, they absorb an amount of water which depends upon the porosity, resulting in penetration of water through the wall, cracks caused by swelling and shrinkage, destruction of concrete caused by corrosion of reinforced steel, lime leaching, chemical corrosion, binder transformation, etc.,
EXCEL NanoSeal by its name indicates a nano technology based water repellent. Unlike various film of coating, EXCEL NanoSeal does not seal the pores at the surface of concrete. Instead, it penetrates into the pores and forms a very thin (nano) layer on the pore walls. These pores no longer will be wetted by water and the capillary uptake of water is prevented.
How to work
EXCEL NanoSeal reacts with the atmospheric moisture, thereby generating active resin while liberating m.oisture
The active ingredient gives excellent water repellency to the substrate without clogging the pores or capillaries and the substrate retains a very high degree of vapor permeability.
EXCEL NanoSeal should be diluted 1:12 (parts by volume) with soft water.
The substrate should be very dry and absorbent. The diluted solution should be liberally applied one or two coats, depending upon porosity of substrate material.
The solution can be applied by brush or spray.
Fast curing hence imparts water repellent soon. Neutral in nature, no color change to substrate.
Excellent penetration in absorbent mineral building materials.
The pores and capillaries are not sealed and hence maintain breath ability while preventing water absorption.
Very good alkali resistance. Provides excellent water repellency.
The coatings are UV stable and resistant to biological degradation.
Easily dilutable with water.
Technical Specification :
Viscosity @ 25'C By B5
Active Nano Particles
Specific Gravity @ 25'C
100 – 300(cps)
45 % - 50 %
0.90 – 0.95
Area of Application :
Mineral based natural and artificial stone
Concrete / Bricks
Any mineral surface that absorbs water
1 kg of EXCEL NanoSeal is to be diluted in 10 to 12 lts of soft water and can cover (approx) 250 to 300 Sq.ft. No maintenance is required. All the above forms of damages can be prevented or kept at bay for longer period by means of creating EXCEL NanoSeal coated water repellent zone, which considerably stops uptake of water to keepthe masonry surface dry.