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Valtti Opaque Waterborne Wood Finish

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Description

Valtti Opaque (Vinha) - Semi-matt waterborne high performance opaque wood finish

Description

Semi-matt low-odour special alkyd-reinforced acrylate paint for use on exterior wood surfaces.

Product features

Valtti Opaque is a semi-matt microporous high performance flexible waterborne paint for wood. It offers a highly durable and extremely low maintenance finish for exterior timber surfaces.

Valtti Opaque offers good weather resistance, flexibility and an extremely durable low-maintenance finish. Valtti Opaque is moisture regulating and will not crack, peel or blister.

Recommended uses

Exterior claddings, weatherboarding, windows frames etc. Valtti Opaque can be used for new surfaces and surfaces previously coated with exterior paints for wood surfaces or semi-transparent wood finishes. Suitable for smooth and sawn wood surfaces and for impregnated wood. Also for industrially primed wood surfaces. Not suitable for treating floors.

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TECHNICAL DATA

The paint is suitable for exterior walls

The coverage of the paint on rough surfaces

4
m2/l

The coverage of the paint on smooth surfaces

10
m2/l

Base paints

VVA and VC

Gloss grade

Semi-matt

Coverage

Smooth wood: 8-10 m2/l per coat. Sawn wood: 4-6 m2/l per coat. Wet-film thickness approximately 100-250µm per coat, dry-film approximately 40-100µm per coat. Actual spreading rates will depend upon many factors including texture, porosity and moisture content of the substrate.

Can sizes

0.9 l, 2.7 l, 9 l and 18 l

Thinner

Water

Application method

Brush or spray. Polyester and nylon paint brushes are best suited for the application of Valtti Opaque.
For airless spray: use a 0.018” – 0.023” spray tip.

If necessary thin by up to 10% with water.

Drying time at 23°C and 50% relative air humidity

Normally touch-dry in one hour and recoatable after 2 hours. Low temperatures and high humidity will make drying times longer.

Solids volume

Approx. 30-37%, depending upon the colour

Density

1.1 - 1.2 kg/l, ISO 2811

Storage

Protect from frost.

APPLICATION DETAILS

Application conditions

All surfaces to be painted must be dry, the moisture content of the wood below 20%, the temperature of the air at least +5 °C, and the relative humidity of the air below 80%.

Preparation

Surfaces must be clean, dry, and free from grease, dirt, oil, wax, rust, all loose material and surface contamination. Remove all loose material from previously painted surface with a steel brush. Wash moldy surfaces with Homeenpoisto Mould Removal solution according to instructions. Treat rusting metal parts like nail heads with Rostex Super Metal Primer. Ensure that existing glossy, gloss painted and filled surfaces are thoroughly flatted down. Ensure that all surfaces are thoroughly prepared prior to priming and painting. Make sure that timber cladding, weatherboarding and timber glazing beads, etc. are adequately fastened with non-corrosive fixings.

Note: Discoloration of paint especially noticeable within light colours may occur over knots and resinous areas present in the wood as a result of temperature and humidity fluctuations. Particular attention with regards to preparation should be given to wood such as Oak, Teak, Cedar, Douglas Fir, Mahogany and Idigbo, etc., which contain oil and water-soluble tannin which may impair the drying, hardening or adhesion of surface coatings and discolour the finished surface.

Priming

Prime new bare wood overall at the earliest possible stage of construction and spot prime all bare areas on previously painted wood with Valtti Pohjuste or Valtti Akvabase Priming Oil.

Note: A priming coat of Valtti Pohjuste or Valtti Akvabase should be applied to all exterior wood which has not been pre-treated or vacuum impregnated with an approved preservative. Apply liberally on end-grain.

Painting

Stir the paint thoroughly before use. Usually Valtti Opaque is used unthinned, if necessary thin with water. Apply two coats with brush or spray on new surfaces and one or two coats in maintenance painting depending on the colour difference of the substrate and the condition of the surfaces to be treated. When treating impregnated wood with light colours, apply two or three coats. Reserve enough paint mixed in one container for a uniform surface to avoid possible colour differences. Apply liberally on end-grain.

Cleaning of tools

Clean with water immediately after use.

Maintenance instructions

After painting the surfaces must be handled with care, because the paint will achieve its final hardness and durability after 4 weeks under normal conditions. Soon after treatment the surfaces can be cleansed lightly with soft brush, damp cleaning cloth or mop.
Earliest one month after painting dirty surfaces can be cleaned with Tikkurila Huoltopesu (1 part Huoltopesu, 10 parts water). Clean stains and very dirty surfaces with a stronger solution of Huoltopesu (1:1). After washing rinse surfaces and allow to dry.

Maintenance treatment

Valtti Opaque can be repainted with Valtti Opaque. One coat is sufficient, if same colour is used.

Check the condition of the timber and the functionality of the log structure before applying the finishing coat. See more information at:
http://www.tikkurila.com/decorative_paints/instructions/exterior_painting/log_surfaces

EU VOC 2004/42/EC-limit value

(cat A/e) 130g/l(2010)