i am going to paint cement blocks with masonry spirit based gloss what is the best prep and primer to use?

Answer 1

You will want to begin by cleaning the masonry with an etching cleaner to remove contaminates and leaching lime. Muratic acid is widely used in this application, however, it is based on sulfuric acid which is dangerous to you and the environment. Top Secret Coatings has an excellent etching cleaner, TS 695 Etching Cleaner (as seen the supplies page of the company website). It is actually fertilizer in the flowerbeds. It accomplishes the same thing as muratic acid without the danger. Once thoroughly dry you are ready to prime. If you are looking for a waterproof primer that works as a waterproof barrier coat I suggest Top Secret’s TS 6390/92 ever-Last Epoxy Primer. It is a polyamide two component epoxy primer that can be brushed, rolled or sprayed. Adhesion, durability and value are excellent. This is the same stuff the Army, navy and Coast Guard uses so it’s the good stuff. Another option would be their TS-307 Oil Based Primer. It is easier to use because it is a single component product but it hasn’t the pedigree of the Ever-Last Primer. I suggest staying away from water-based primer because water is not a vehicle into masonry, solvents are so adhesion is far better. I hope this info helps. Good luck with the project.

Answer 2

First of all you have got to power wash the walls and then wash down with a fungacidal wash.Then seal the walls with a masonry sealer and then apply 2 coats of masonry paint.

Answer 3

Make sure the blocks are clean...pressure-wash them or scrub them with TSP and rinse them. Let them air-dry for a day or two, then use a Drylok-brand masonry primer and topcoat.

Answer 4

I second that,used drylock 20 years ago in parents basement,still looks good.

Answer 5

can do it all in one coat use Drylock it will water proof them also and comes in a variety of colors.

Answer 6

a