Professional Stucco Acessories from Stucco Italiano

Primer Quartz

A very adhesive primer for lime based products. Acrylic primer containing quartz sand is used as an undercoat before applying lime-based plasters.

Where to use it

Primer Quartz is used in four situations:

1. When the substrate is dusty.
2. To strengthen a fragile surface which has, for example, old paint which is adherent, yet soft.
3. On plaster to separate a slightly acid material such as gypsum from an alkaline material such as lime.
4. To make the absorption of the wall uniform when it has several different substrates. For example, if you want to apply stucco to a wall which has been previously painted with acrylic paint, then later had it's defects repaired with plaster it is recommended that you use Primer Quartz.

Note: If the product has been diluted, mix often to avoid sedimentation of the quartz sand/powder.

Even when the surface is coated in acrylic paint, a primer is not absolutely necessary, but we do advise using Primer Quartz before applying Marmorino Classic or Velvet Marmorino on such a surface. Quartz Primer makes the surface more rough allowing a better adhesion.

It is not necessary to use a primer if you are applying a lime-based plaster over an already existent lime-based substrate.

Why to use Primer Quartz

You can always use a normal acrylic primer, but we strongly suggest using Primer Quartz on all surfaces which are very smooth (dry-wall, gypsum plaster, old marmorino, wood).

By using a primer with quartz, the surface becomes rougher, increasing the contact surface area by two and a half times thereby increasing the adhesiveness of the plaster to the substrate.

Besides, it makes it much easier to apply the first coat of plasters such as Marmorino Classic.

How to use it

Dilute by adding 40-50% water, mixing well and applying it as you would a paint using a roller or paint brush.