FirmoLux MicroPrimer™ is a water based penetrating quartz primer made in Italy exclusivly for Italian lime plasters. Helps to create a bond between your plaster and wall.

I don't usually leave reviews but Firmolux's product and customer service are fantastic. I only have my first coat on but will post a picture after burnishing. Grisello (and rest of the company's plaster) are pure, imported from Italy, with zero VOCs. Aside from product quality, I accidentally ordered microprimer instead of a second gallon of Grisello. Anthony (even though it was after hours) talked with me about the process and shipped another Grisello out today. Seamless. Venetian plaster is a challenging project, and to have someone explain exactly what to do with the exact product one is using is invaluable. Lastly, Firmolux has a tutorial for plaster application. Highly recommend.

This is great primer for the job. It goes a long way and makes the Venetian plaster stick for a even application

I am not a professional by any means … but throughly enjoy and appreciate good products that come along with great information …and outstanding customer service … I highly recommend !!! Shipped and arrived faster than expected also 😘👌🏽 Firmolux is defined my go to

love the result.....soft effect in functional grey

It really, actually matters that you use this type of primer (with minerals like quartz) before you Venetian plaster a wall, especially with grassello which is smooth! I was a skeptic too. Unfortunately trial and error and science prevailed.

The primer arrived with no label, no instructions, and it looked like someone just dumped a bunch of stuff in a small container. Suffice to say I won’t be using it because I’m not even sure it’s primer.

Don't skimp on the primer. Glad I got this quality stuff.

Didn’t do what it supposed to, wall still crumbles! Not meeting my expectations!!