Oiled VS. Laquered Floors

Oiled VS. Laquered  Floors


OILED WOOD SURFACES
Impregnation with oil emphasises the structure of the wood and brings out its natural beauty. This very traditional type of treatment produces an open-pored, breathable surface, which is simultaneously matt and moisture repellent. Oils penetrate the wood and do not leave behind any closed surface film, thus creating a natural feeling of warmth. We recommend using lukewarm water with suitable cleaning and maintenance products to clean oiled fl oors. The fl oor
should be wiped with a slightly damp cloth; there should be only a slight film of dampness on the cloth. Oiled wood surfaces must be re-oiled from time to time. It is possible to repair scratches or pressure marks to some extent; however, if the surface is only partially maintained differences in colour may  appear temporarily.

LACQUERED WOOD SURFACES
The structure and colour of the wood are brought out to a greater or lesser extent, depending on the type and basis of the primer or lacquer. Lacquer produces a closed surface fi lm. Various gloss levels in the product aff ect the subsequent appearance of the surface -matt or ultramatt surfaces are  generally immune to scratches. For lacquered fl oors we also recommend cleaning with lukewarm water, the correct care products and a cloth, which is only slightly damp. Partial repairs cannot usually be undertaken without disruption.

Compability between primers, varnishes, oils and other finishing products

Compability between primers, varnishes, oils and other finishing products

WEAR CATEGORIES Parquet finishes and oils STAUF

WEAR CATEGORIES Parquet finishes and oils STAUF

Dispersion-based adhesives

Ready-to-use dispersion-based adhesives


In their ready-to-use state, dispersion-based adhesives contain a plastic dispersed in water, acting as an essential binding agent: the solid synthetic resin particles are therefore distributed very fi nely throughout the water. Dispersion-based adhesives achieve strengths similar to those of two-component polyurethane parquet adhesives. The strength is not reached, however, until the water is taken up by the material or the air.

Dispersion-based adhesives therefore always require a subsurface with good absorbency that can take up a proportion of the water in the adhesive. In the drying process, the synthetic resin particles bind to one another to form a solid adhesive fi lm. The water contained in the adhesive causes swelling of parquet wood (especially wood types that are sensitive to swelling pressure, such as beech, sycamore and ash), and  dispersion-based adhesives also only have a low cavitybridging capacity. They are therefore only recommended for bonding dimensionally stable and small-format parquet. Solvent-free and not subject to mandatory labelling, they are exemplary with regard to the protection of installers and consumers.



Dispersion

Powdered dispersionbased adhesives Powdered dispersion-based adhesives consist of water-emulsifi able powdered plastic, fi llers, calcium sulfate hydrates and/or cement, as well as additives. These adhesives are mixed with water. A signifi cant proportion of the water is chemically bound due to a reaction with the powder components. As a result, considerably less water is given off to the environment and the setting process is accelerated. In comparison to conventional dispersion-based adhesives, therefore, they result in relatively little wood swelling and can be used even on poorly absorbent msubsurfaces. Because of the limited potlife or processing time, it is advisable to prepare thoroughly before carrying out work.



Solvent bearing adhesives

In solvent-bearing adhesives, the binding agents, i.e. the adhesive substances, are dissolved in the  olvents. The transition from the liquid processing state to the solid fi nal state is brought about by evaporation or diffusion of the solvents. In this group of adhesives, the binding agents are mostly resins and rubber. Because of their good adhesion properties, solvent- based adhesives can be used  or many types of parquet, including for more-exotic woods. However, one should bear health aspects in mind when using solvent-based adhesives: between 60 and 90 per cent of the adhesive is volatile and is emitted into the environment. For this reason – and because of their high flammability – we recommend substituting solvent-bearing products with solvent-free ones wherever possible.




Reaction resin

REACTION RESIN

  • Reaction resin products based on polyurethane (PU)

Polyurethane adhesives generally do not contain components that cause parquet wood to swell. The two-component variety hardens gradually as a result of the chemical reaction between the mixed components - this process begins immediately after mixing. These adhesives therefore also have a limited potlife or processing time, which again necessitates thorough preparation before work commences. It is important to comply with the prescribed mixing ratio exactly in order to avoid defec-tive bonding. Suitable for universal applications, two-component PU adhesives harden without shrinkage into a deformable hardelastic state. They are particularly suited to shear-resistant bonding of high-stress, moisture-sensitive types of parquet and boards such as beech, sycamore and exotic types of timber. Ready-to-use single-component polyurethane adhesives can generally also be used without retrictions. They harden as a result of a chemical reaction between the binding agent and the ambient moisture. The setting behaviour therefore crucially depends on the water or moisture content of the subfl oor and timber, as well as on the climatic conditions in the room. Depending on their formulation, they are elastic or exhibit transverse elasticity after hardening and, because of their balanced mechanics, ensure very good stress relief between the parquet and subfloor.

  • Reaction resin products based on silane-modifi ed polymers (SMP)

Reaction resin adhesives based on silane-modifi ed polymers are not subject to mandatory labelling. SMP products can be used on most subsurfaces without adhesion promot-ers (priming). They set to form an elastic substance and are free of sili-one and solvents, very low in emissions, almost odourless once set, and easy to work with. Because of the elasticity of the polymeric materials used, silane-modifi ed polymers offer effective protection of the subfloor against the natural swelling and shrinking movements of the wood. In addition, they are very easy to work with.

  • Epoxy resin products

Epoxy resin-based reaction resin adhesives for parquet only exist as two-component systems. They are characterised by their low shrinkage during hardening and exceptionally good adhesion to almost all subsur-faces. In terms of their technical properties, they are similar to two-component polyurethane adhesives, so all of the information provided there also applies here. Epoxy resin adhesives also generally do not have any constituents that cause swelling of parquet wood, but it should be noted that both components usually contain hazardous substances that call for appropriate occupational safety precautions.

  • Reaction resin products based on silane-terminated polyurethanes (SPU)

Silane-terminated polyurethanes com-bine the benefi ts of polyurethane chemistry, e.g. its versatility, with those of silane crosslinking. After hardening, SPU adhesives have balanced mechanics, are characterised by both elasticity and strength, and at the same time are very easy to spread. The silane chem-istry creates a strong bond to the subfloor – allowing strong bonding, even without a primer, on a multitude of subfl ors. They are approved as fully fledged substitutes for solvent-bearing parquet adhesives and, accordingly, not only improve workplace hygiene but also reduce greenhouse-gas emissions.