Romabio Grassello High Gloss Venetian Plaster
Romabio Grassello High Gloss, a true Venetian Plaster, is a historical slaked lime plaster, ideal for interior and exterior surfaces, applied on masonry or sheetrock surfaces to provide a classical plaster finish with chromatic color variability. Grassello High Gloss is made in the ancient tradition, with the capabilities to carbonize to masonry surfaces providing decades of durability, withstanding most climatic conditions, and not capitulating to environmental stress. Grassello High Gloss has been formulated with a very high content of “lime putty”, which by its own nature is quick to set. The formula has been adjusted to form to a medium set, as is possible, to ease application. This formula has been created as a “finish” coat, with small millage thickness to create a very high gloss finish coat. Romabio Grassello High Gloss (Venetian Plaster) is a high-quality slaked lime plaster ideal for stucco finishes when applied to NHL cements and slaked lime stuccos, permitting endurance cycles that can last intact for centuries.
As low as
$31.89
- High-quality slaked lime plaster
- Interior and exterior surfaces
- Extra High Gloss
- Grassello Bio High Gloss can be applied to directly to all interior walls surfaces composed of sheetrock, painted or non-painted, using an appropriate primer.
- This plaster product is not oil proof, and can be damaged by foods, greases, body oils, color crayons or washable colored markers. Cleaning may damage or change the sheen of the paint.
| Type | Interior/Exterior |
|---|---|
| Brand | ROMABIO |
| Finish | High Gloss |
| Paint Sheen | High Gloss |
| Material | Mineral-based |
| Manufacturer Code | GRAS |
Application: STEP 1 - Primer Coat - Dilute BioGrip Medium primer with 30% water. On porous surfaces apply product abundantly so as to penetrate sufficiently to consolidate and bond correctly. On slightly porous surfaces apply product evenly as needed to cover surface completely, being careful not to leave voids or unpainted surfaces. Allow to dry for at least 8 – 12 hours before applying any type of finish paint or plaster product. STEP 2 - 1st Coat - Apply Marmorino GF with a thin layer of product and cover entire surface and then remove excess by tilting trowel to approximately 30°. Once excess has been removed, smooth surface using a 30° angle, compressing plaster using the same angle, in arched trowel motions, with a forward and backward direction, to create a smooth surface as is possible and allow product to slightly set. STEP 3 - 2nd Coat - Apply Marmorino Flat or Satin to prepared and properly cured base as indicated above for 1st coat, using a round edge trowel specially designed for fine plaster applications. Apply a thin layer of product and cover entire surface and then remove excess by tilting trowel to approximately 30°. Once excess has been removed, smooth surface using a 30° angle, compressing plaster using the same angle, in arched trowel motions, with a forward and backward direction, to create a smooth surface as is possible and allow product to slightly set. Then begin to compress setting coat of Marmorino, pushing gently with the weight of the trowel to create a perfectly smooth and flat surface. Only work it enough to achieve a relatively smooth and even surface. Maintain a clean trowel at all times during finishes. At the last phase of drying and finishing, using a 15 – 20° angle on the finish trowel; burnish the Marmorino surface to achieve the desired sheen and decorative effect. Typical time lapse for this product to set between initial application and final burnishing is 1 – 3 hours when applied to a Marmorino GF or natural stucco base, depending on heat, humidity and base coat absorbency. Once the 2nd coat has visibility dried, a 3rd coat can then be applied. STEP 4 - 3rd Coat - Apply Grassello High Gloss onto prepared base of Marmorino Flat or Satin, using the same technique as described above for Marmorino. Smooth the finish as much as is possible during the initial application process, as Grassello will pull very quickly. One (1)-coat of Grassello High Gloss may be sufficient depending on finish and type of decorative effect desired. Traditionally, and in most cases, it is strongly suggested to not complete the last phase of burnishing with a one (1)-coat application, but to apply a 2nd coat using Grassello High Gloss. Once the Grassello High Gloss has visibly dried, repeat the last step again, applying less material than at the initial onset of applying and covering the surface. Follow burnishing instructions indicated above for 2nd Coat. After product has almost completely dried, burnish again with a polishing trowel, pressing with a firm 0° – 5° angle, and with a back and forth movement, polish Grassello High Gloss to the highest sheen possible. Typical time lapse for this product to set between initial application and final burnishing as a 4rd coat is 10 – 20 minutes.
Clean up: Soap and Water
Coverage: 600 - 800 sqft - depending on absorption
*Allow a drying time for the 1st coat of BioCement GF 1.0 or any of the BioMarmorino’s for at least 8 – 12 hours, and with successive coats time will vary greatly depending on thickness and type of finish desired. With lower temperatures and humidity, more time may be needed between coats.*
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