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MARCOTHERM PRIMER - Sealer/Primer with Quartz Sand Grains by San Marco

Save 49% Save 49%
Original price $225.80
Original price $26.95 - Original price $239.80
Original price $225.80
Current price $115.95
$22.99 - $207.95
Current price $115.95

Marcotherm Primer - Sealer/Primer with Quartz Sand Grains by San Marco 

Click here to see the Color Chart / Brochure

Professional Primer by San Marco. Quality paint and paint tools proudly made in Italy.

MARCOTHERM PRIMER is a high penetration water soluble sealant which is suitable for the impregnation and consolidation of interior and exterior mineral surfaces. MARCOTHERM PRIMER has sand grains in it which provide a texture to help anchor subsequent coats of plaster. This makes MARCOTHERM PRIMER the idea primer for lime based finishes such as Marmorino. Due to its formulation of polymers and very fine particles, in the presence of non-homogeneous surfaces, pointing or patches, MARCOTHERM PRIMER evens out the absorption of the support and creates the ideal anchorage for subsequent coats of the finish. When applied the product goes on clear and dries white. If there is any residual humidity in the wall the product will not dry white in those locations thus highlighting potential problematic areas in the substrate When appropriately coloured with a colorimeter, MARCOTHERM PRIMER allows excellent coverings to be achieved in painting cycles with intense and bright shades.


For color options please see the link to the Brochure under the Documents heading.  On order page please type in the color code you would like and we will tint for you.


Volume/ Weight

  • 15L (3.96 gallons)
  • 19030g (41.95 lb)
  • 5L (1.3 gallons)


  • 80-100 square feet per liter



Technical Data Sheet

Safety Data Sheet

Related Products

Concrete Art


Marmorino Classico

Marmo Antico


Customer Reviews

Based on 5 reviews
Henrik Keresztes

Excellent primer.

Vladyslav Puryk

Great material

Luis Venegas

Great product

Jim Shugrue
Marcotherm plaster primer

Marcotherm is the perfect primer for Classico Marmorino. If you want your Marmorino to behave as it is intended to, this primer is a" must use" . It is the perfect base for Classico , or any of the San Marco aggregate plasters. I will always use this product, check it out for yourself and see the difference.
Jim Shugrue

Recommend this

Did some initial research and got exactly what I wanted. Totally recommend this