Use and Care Manual
Recommendations for the application of PhotoActiva TB, invisible Photocatalytic coating for porous
surfaces.
Preparation of surfaces
The surfaces prepared incorrectly can cause poor performance and a lower duration of the coating. Up
to 80% of all coatings’ failures can be directly attributed to inadequate surface preparation, which
affects the adhesion of the coating.
To ensure adhesion of the substrate coating and extend the coating system's life, select and implement
the proper surface preparation. The method of preparation of the surface depends on the substrate, the
environment and the expected life of the coating system.
Contamination and surface dirt (including its effect on the substrate) will also influence the selection of
surface preparation methods.
The external elements: meteors-wind, rain-, plants, birds, etc. can affect the state of the surfaces after
the application of the coating.
• The surface must be dry, porous and solid.
• Remove mildew, oil, dust, dirt, rust, decanted paint or any other contamination, to ensure good grip.
• No outside paint can be made immediately after rain, during misty weather, when rain is expected or
when the temperature is below the recommended temperature of application. Under no circumstances
will it be applied when frost is forecast within 24-48 hours after the application.
The following table provides an overview of the proper preparation of the surface for a variety of
common substrates.
Preparation steps by surface type
Block (Cinder and Concrete)
Remove all the loose mortar and other material from the block. The surface must be free of
efflorescence, concrete powder, dirt, grinding agents, curing membranes of moisture, loose cement and
hardening.
• Concrete and mortar must be cured at least 30 days at 75 ° F.
• The pH of the surface should be between 6 and 9.
Bricks
The brick must be free of dirt, loose mortar and excess and strange material.
• All bricks should be allowed to make time for at least one year, followed by brushing to remove
efflorescence.
Concrete
The concrete must be cured before the application of the coating. The curing is defined as concrete
poured and aged at a material temperature of at least 75 ° F for at least 30 days. The pH of the surface
must be between 6 and 9.