Use and Care Manual

(Reference ASTM D4263) Concrete must be free of moisture as much as possible (humidity rarely falls
below 15%). If there is humidity, the source must be located and corrected before applying the coating.
Temperature: the temperature of the air, surface and material must be at least 10 ° C (50 ° F) during the
application and until the coating is cured.
Pollution: eliminate all grease, dirt, loose paint, oil, tar, enamel, efflorescence, cement powder and the
elements that can be detached
Hardeners, sealers, grinding agents, healing compounds and other concrete treatments that may limit
the adherence and penetration of the coating must be eliminated.
Natural Stone
The surface must be dry and in sufficient state of solidity.
Remove mildew, oil, dust, dirt, rust or any other contamination, to ensure good grip.
No outside treatment 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 frosts are planned within 24-48 hours after the application
Painted interior surfaces
All surface contamination, such as oil, grease, loose paint, dirt, strange matter, rust, mold, mortar,
efflorescence and sealants must be removed to ensure good bonding to the paint.
In the case of color paints, if the quality and compatibility of the pigments cannot be guaranteed, there
is a risk of discoloration
The application on exterior painted wall surfaces is not recommended, since it is not possible to ensure
that substrate resins (binders) are resistant to photocatalysis. Photocatalysis effect outdoor is currently
able to destroy most of the medium quality binders, due to the direct sun light energy.
Application methods
PhotoActiva TB is designed to be applied to porous surfaces that have a minimal absorption capacity of
the product.
The application methods will be adapted to the availability and requirements of each surface. An excess
of product may have the effect of producing unwanted bright areas, or that there is an accumulation of
whitish powder when drying excess material. The application by means of brush or roller can give rise to
drops and occasional accumulations in low porosity surfaces, that can be detected with the naked eye,
in the form of shining spots
PhotoActiva TB is usually applied by spray gun. Although it adapts to many types of guns and nozzle, the
usual recommendation is a low-pressure gun, with 0.5 mm open nozzle. The only requirement is the
nozzle must be regulated so that large drops do not form.
In very porous and absorbent surfaces, the application can also be applied by a brush or roller, with the
precaution of not applying an excess of product that can generate unwanted glossy spots or tears
The surfaces to be protected must be clean and dry at the time of application. We recommend an
application in one layer, of 100-200 gr / m2. The application of the product is sufficiently versatile, so
that the final dosing can also be achieved by applying more than one layer. The dosage must be adapted
to each type of surface, since in areas of limited porosity, in case of applying an excess of product, it
may generate unwanted gloss.
In very dark surfaces a certain whitening effect can be given, so previous dosing testing is advised
Also, the material applied in excess can lead to a whitening of the surfaces and to the appearance of
some loose white powder