for the DIY Market
Rio Verde coatings bring to you the aesthetical, chemical and mechanical performances of the professional Furniture and Door & Window Manufacturers. Thanks to the ease of application, everyone can enjoy a superior quality and finish in their wood coatings.
Renner Italia Wood Coatings fill your lives with colours you can’t resist. Our water-based coatings for wood were developed to not only enhance the living space but also to preserve the health of the air we breathe. Without Water, nature would not survive.
Rio Verde water-based coatings allow you to respect the beauty of natural wood without altering it.
A wood coating can be classified on the base of its formulation and of the substrate, on which it is applied.
Wood coatings, classification by formulation
- Water-based wood coating
- Solvent-based wood coating
Wood coatings, classification by substrate
- Wood coatings for interiors (furniture, wooden floorings, stairs, beams)
- Wood coatings for exteriors (doors and windows, coverings, garden furniture)
The coating products are classified also by the Legislator. The standards they adhere to are:
- EN 971 (Paints and coatings. Terms and definition of coating products. General terms)
- ISO 4617 (Paints and coatings. List of the equivalent terms)
- ISO 4618 (Paints and coatings. Terms and definition)
To have a better understanding, we have consulted the International Classification of products and services of the Ministry of Economic Development.
The precise classification and meaning of a coating product is laid out by defining the main features. That’s why different parameters of classification are used. The aim is also to ensure the user is given a precise and detailed terminology. The users are usually very different and have specific needs and sometimes also differ from one another.
The parameters of classification for wood coating can succeed on another depending on the context. There are two categories that describe the main features of the coating.
Formulation: water-based coatings and solvent-based coatings;
Substrate: coatings for interior and exterior use, in turn classified in water-based coatings for interiors, solvent-based coatings for interiors and water-based coatings for exteriors and solvent-based coatings for exteriors.
This parameter can be defined as technological parameter, because it depends on the means in which the product is dissolved or dispersed. Generally, this kind of classification, together with specifications: high-solid coatings and low-solid coatings makes up the technological makeup of the coating. Furthermore, it is complete when the need of mixing more components (e.g. Hardeners, Thinners, Water etc.) and the kind of drying condictions (natural, in oven, UV, etc.) is indicated.
inside a Can?
The wood coating is a very complex product. Usually the complexity of its recipe cannot be perceived. On the contrary, it is a very sophisticated chemistry.
Making the matter easier, a can of wood coating on the market is always together with the technical data sheet that contains a lot of information.
It is important to specify that the classification of coatings is based on:
- the binder used, its characteristics, the main ingredients used
- how it’s applied (by brush, by spray gun, by sponge, by cloth)
- what it looks like and what it feels like (wax effect coating, clear coating, transparent coating, lacquered coating, pigmented coating, paint, metallic coating, shimmering coating, natural effect coating, fluorescent coating, iridescent coating, matt coating, glossy coating)
Additionally, a specific characteristic of the coating can be used to distinguish it from others (e.g. non-yellowing)
The European Standard EN 971 tries to define a coating product. That is what forms a solid film on the surface on which it is applied for protective, decorative or specific purposes.
In wood finishing, it is impossible that single product is the solution to all of the above for a substrate. The wood coating is a chemical product that participates in forming a solid film, continuous or discontinuous, on the surface on which it is applied for protective, decorative or specific purposes. We can group the types of coating product into three families, which in turn can be divided in subcategories:
- non-filming products
- filming products
- special products
Wood coating – Stains
The stains are colorants for interiors that are usually applied as first treatment on raw wood. The stains give the wood the desired shades and give a glimpse of the wood grains. Ideally the stains are used to decorate light woods. In this case, the stains have the job of making the light wood imitate a dark or more precious woods. On occasions, the stain is to regulate the aesthetics of wood used to that of different colours. The stains are made by solutions or dispersions of colouring substances, in solvents or water. The concentrations and viscosity of this material is very low. The vehicle in which the colorants are dissolved or dispersed is either water-based or organic solvent-based.
- Water-based stains tend to swell the wooden fibres. Therefore, they must contain a binder that limits the hydro-absorption in the wood.
- Absorption is a physical phenomenon on which the stain application is based. For this reason, the application of these products is very easy. In the industrial coating the deluge method is preferable, especially with water-based stains.
- When overcoating, you must choose the correct subsequent product. Certain products will dissolve the pigment in the stained wood and create imperfections in the finish.
- Water-based stains are always preferable when considering environmental protection. In all stains, the vehicle (the liquid part) represents the 90% of the total weight of the product.
The term clear (which is usually used as a synonym of transparent coating) comes from mordère, with the meaning of holding, keep firm, stable. In the painting process, it is called a clear binder between the colourant and the substrate. Wood stains made of colourants dissolved in water are called clears.
Wood stains for outdoors
Etymologically an Impregnating product is one that is filled up in a tank and submerged. They are specifically used for exteriors joinery coatings. These products are used in particular with doors and windows, which must be insulated from the elements. A Topcoat product is always used with the impregnating stain and built up over 2 or 3 layers. The impregnating stains have a low solid content of less than 20%. If these impregnating stains contain biocides, they preserve the wood from the aggression of microorganisms, such as fungi and moulds. In this case, they’re defined as impregnating-preserving stains for wood.
In the huge Rio Verde range, there are both completely transparent impregnating stains and impregnating stains containing pigments which colour and shield the wood from UV radiation. The impregnating stains of Rio Verde range, especially the water-based ones, can be used without the following application of a water-based Topcoat. For a better protection of the exterior wood, a Topcoat is always recommended.
Choose the impregnating stain which is right for you:
Filming Forming Products
Coatings and Paints: The Jargon of Wood Finishes
Jargon can play a strange role in the art and technique of painting.
- It is incorrectly defined as “coating” the wooden object with a continuous or discontinuous transparent finish. Some coatings have a light colouring which allows the wood grain to be seen beneath.
- It is incorrectly defined as “painting” which is pigmented and fully covers the wood grain beneath due to the solids contents.
The term “lacquer” comes from “shellac” and is associated with the idea of the precious pigment which has been mined from. Historically, lacquered paintings were associated with glossy coatings. Now the term “lacquered coating” is commonly accepted as a synonym of enamel, regardless of the gloss level. The term “enamel” was originally used to refer to a coating with a particularly strong, smooth and glossy film. Enamel is associated with the world of ceramics. It is a glass covering, obtained by means of the melting of inorganic substances on a ceramic (or metal) support.
The Rio Verde water-based basecoats prepare the wood for the following application of the Topcoat. They level out the surface and for this reason they are also defined as intermediate. As they serve as fillers, they are applied in the amount of coats, needed for that particular substrate. Rio Verde intermediate basecoats quickly dry off and are very easy to sand. In the Rio Verde range, there are only water-based Topcoats for Interior use. This is because the application of Impregnating Stains, Exterior Topcoats and Enamels for Exterior use is sufficient to achieve the desired look. The basecoat guarantees an excellent adhesion of the entire film to the wood and blocks the discharge of the wood resins from the surface.
Choose the correct Basecoat for you:
Topcoats for Interiors
Topcoats are the coatings you find on the surface and are the final coat of the system. Therefore, aesthetic and chemical-physical resistance features are required from these products. Elasticity is also relevant in coatings to reduce the chances of a break in the film.
Topcoats for Interiors. Within the Rio Verde range, there are only water-based Topcoats for indoors. This is because we pride ourselves on the attention paid to health and safety and it is important that the emissions are clean. Rio Verde water-based Topcoats are aesthetically pleasing, soft to the touch and resistant to abrasions and scratches.
Choose the right Topcoat for you!
Topcoats for Exteriors
Topcoats for Exteriors. As wood is a living material that swells and shrinks with humidity and temperature, it is important that the coating must offer superior performance and satisfy these needs. Rio Verde water-based Topcoats are made with the base of an acrylic resin plant and have high molecular weights to help the coating breathe and facilitate evaporation. These Acrylic resins maintain high elasticity coefficients over time. Topcoats based on alkyd resins, on the other hand, are noteworthy for the chemical hardening that can cause the hardening of the film, which can compromise elasticity and permeability. Rio Verde range also includes traditional Topcoats, i.e. solvent-based Topcoats based on polyurethane resins.
Choose the Exterior Topcoat that’s right for you!
The Rio Verde oils dissolve in water. They do not create a superficial film, but they generate a form of wood wetting and maintain the woods natural aspect. They are very popular in the world of furniture. The RO30xx range also includes iridescent trendy colours. The RK10xx range is extremely efficient on Exterior floorings such as Decking, Swimming Pools etc.
Choose the oil that’s right for you: