Pietre d'Arredo_Finisching Element facings
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Pietre d'Arredo® naturalmente ricostruite Finishing elements facings Technical Data Sheet - Rev. 03/2018 The Pietre d’Arredo finishing elements are an accurate reproduction of natural stones, handmade fired bricks and wooden walls. They are made using special binding materials, natural lightweight aggregates, colour pigments highly resistant to UV rays and additives conferring excellent resistance to atmospheric agents. The Pietre d'Arredo elements are lightweight, resistant, breathable, frost-proof and extremely water-repellent. The Pietre d'Arredo finishing elements, aesthetically similar to natural stones, can be used for new projects as well as in the requalification and refurbishment of old buildings. As a result of their versatility, they can be used to clad both internal and external walls, retaining walls, columns, fireplaces, wainscoting, etc. Furthermore, with the PIETRACOMFORT system, they can be used to finish thermal insulation systems of all types and replace the classic coloured finishes. The surfaces must be flat, seasoned, mechanically resistant, sufficiently dry, free from inconsistent areas and dust or greasy substances. Extremely porous and highly absorbent stable surfaces can be treated with consolidating primer RASOTECH PRIMER CONSOLIDANTE in order to lower the level of absorption and improve the workability of the adhesive. Cement plaster surfaces: must be sufficiently dry and seasoned, with a mechanical resistance on the surface that is capable of supporting a traction force equal to > 0.5 N/mm2. Moreover, they will need to be perfectly integral and free from any superficial decorative treatment, such as skimming finishes and wall painting. Concrete surfaces: must have been dried for at least 28 days taking the hydrometric shrinkage of the concrete into consideration during the curing phase. Chalk surfaces: must be perfectly dry, compact and free from dust. They will need to be pre-emptively treated with insulating resin primer PRIMER A 16 when laying with cement adhesive; alternatively, they require ARREDOFIX, a ready-to-use adhesive paste, which is permanently flexible and cement-free. Plasterboard surfaces: must be as stable as possible and, in any case, capable of supporting a weight of approximately 50 kg/m2. For the laying of this type of surface, the use of ready-to-use and permanently flexible ARREDOFIX adhesive paste is recommended. Painted surfaces: Remove the decorative layer to the greatest extent possible (chiseling, sanding with large-grit sandpaper, sandblasting). Carefully clean all residues and eventually treat with primer RASOTECH PRIMER CONSOLIDANTE in order to consolidate and improve the adhesion. Metal surfaces: those that are already being used must be mechanically cleansed of any oxidation or previous treatments; should they be newly made, they must be degreased with a cloth soaked in solvent. It is however advisable, should you have any doubts, to contact out Technical Assistance Service.

Painted walls ARREDOFIX prior removal of decorative coatings ARREDOCOLLO previa prior removal of decorative coatings PREPARATION OF THE ADHESIVE For the binding of various elements onto cement surfaces, specifically use the natural hydraulic lime-based levelling adhesive ARREDOCOLLA. It is characterized by its excellent workability, zero vertical slippage, guaranteed mechanical hold, resistance to atmospheric agents (even in harsh climates), optimal breathability and ability to repel water. ARREDOCOLLA efficiently counteracts the possible formation of efflorescence on the surface of the...

naturalmente ricostruite ARREDOLIGHT 0-3 mm (for a medium finish) or with ARREDOLIGHT 3-6 mm (for a rough finish). After having mixed ARREDOSTUCCO, and eventually also ARREDOLIGHT, with water, apply the paste, using the designated plastic bag (piping bag), directly into the spaces between one stone and the next until they are filled in their entirety. When the mortar loses its plasticity and appears to be sufficiently hardened, apply pressure and remove the excess product with an appropriate utensil or trowel; subsequently, finish with a brush made from vegetable fibres and a fine brush....

| Tests performed at 23°C-R.H. 50% in the absence of air ventilation | SPECIFICATIONS Cladding laying in reconstructed stone, frost-proof, breathable, low-water absorption, model ………………… from the COLMEF Srl PIETRE D’ARREDO brand, for the cladding of internal and external walls. For laying, use a natural, antiefflorescence hydraulic lime-based levelling adhesive with optimal performance and zero vertical slippage. classified as C2T in accordance with Standard EN 12004, such as ARREDOCOLLA from the COLMEF Srl PIETRE D'ARREDO brand. Point the stone using the appropriate breathable low-water...