Activa ACPTBG1 User manual

Brand: Activa

Model: ACPTBG1

Type: User 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.

(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

PhotoActiva TB does not form a film. Once dry, it does not alter the properties or appearance of the

substrate.

PhotoActiva TB is mainly applied on porous mineral surfaces (marbles, natural stone, ceramics, mortars,

bricks, etc.). In case of applying on organic materials, as wood or plastics, or on painted surfaces, it is

recommended to check the substrate resistance to photocatalysis, since its ability to destroy pollutants

may result in the destruction of the pigments and the binders of the base paint, or the organic

substrate. This effect may not be immediate, and be seen within a few months

The active particles are incorporated and remain in the surfaces thanks to its capacity of penetration

and to its binding compatible with the surfaces to treat

PhotoActiva TB has built-in mineral binders. Its incorporation into the surfaces is obtained by a

combination of penetration in the pores, and adherence to the surfaces. This grip is gradual, and it can

take up to 10 days to reach its maximum.

During the first days after application, if the surfaces are subjected to water or rain, water can drag a

small part of the material. This elimination will be lower the more porous the surface is, and when more

days have passed since the application. As a general rule, it is recommended not to apply the product

outdoors if rain is foreseen in the next 24-48 hours

Elimination of the photocatalytic effect may be obtained by coating the surface with a film producing

coating, as a standard non photocatalytic paint

Activa ACPTBG1 User manual

Activa ACPTBG1 User manual

Activa ACPTBG1 User manual

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