Obtainment of several types of finishes on mineral coatings

Aesthetically, the final appearance of a façade may have contained different variables: scraping, floating, texturing, stippling, knock-down, sprayed stone, etc.

Preliminary analysis

The several types of finishes in mineral one-coat façade cladding provide high aesthetic value due to the wide range of colors, textures and finishes, preventing the alteration its technical properties (waterproofness, resistance, etc.).

Technical considerations

  • Scraped finish:

It is applied on a substrate having A 12-15 mm thick layer is spread and leveled over the substrate.

Wait for 2-20 hours (depending on the type and condition of the substrate) for the product to harden.

Afterwards, we can proceed with the scraping operation.

The cladding is at its best when scraping with the teeth, these stay clean.

It is important to brush the façade after scraping, in order to remove dust and residual material.

To avoid possible variations in color, perform the scraping operation on the different areas of the cladding when they are all at the same setting point.

 

  • Floated finish:

Apply a 10 mm thick layer on the substrate.

Level the material and wait 1-8 hours (depending on the substrate and ambient conditions) for the mortar to reach the adequate point of hardness.

The cladding is at its best when the consistency of the material allows the surface to be treated without affecting its adhesion.

Different floated finishes can be obtained, depending on the type of tool (trowel, sponge, etc.) used to do the work.

When applying it this way, differences in shade may appear due to the type of application itself.

 

  • Textured finish:

Apply a 10 mm thick layer on the substrate.

Level the material and wait 1-8 hours (depending on the substrate and ambient conditions) for the mortar to reach the adequate point of hardness.

The cladding is at its best when the consistency of the material allows the surface to be treated without affecting its adhesion.

We recommend pressing gently in a single movement passing over the mortar to avoid possible cracking.

When applied in this manner, differences in shade may appear due to the type of application itself.

 

  • Stippled finish:

Apply a 10 mm thick layer on the substrate.

Level the material and wait 24-48 hours (depending on the substrate and ambient conditions) for the mortar to reach the optimum point of hardness.

Spray a second 3-6 mm thick layer using a spray gun, adjusting the nozzle until obtaining the desired finish.

 

  • Knock-down finish:

Using the dash finish as the base, use a plastic trowel to crush the crests of the finish, when the stipple paste is still fresh.

 

  • Sprayed stone effect:

Apply an 8 mm thick layer on the substrate.

Next, level the material and wait 1 hour (depending on the substrate and ambient conditions).

Special care must be taken not to exceed the product’s open time (formation of a surface film), as this will cause a lack of adhesion of the sprayed aggregate.

The stone must always be washed and dry, thereby avoiding adherence problems thereof and possible carbonation of the mortar.

Next, manually spray the chosen aggregate.

When the paste begins to harden, press to flatten lightly with the trowel in order to ensure that the aggregate and the mortar are level with each other.

Recommended products

Mineral coatings

Lightened Monolayer

Semi- Lightened Monolayer

Stone finish

Based on cement and lime

Air lime fine plaster

Based on hydraulic lime

Warnings: The data provided by this Constructive Solution were prepared based on standard onsite installation processes. However, we recommend that you consult our Technical Department in the event of any specific circumstance info@gecol.com

 



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