stain for mortar joints

[flbretski]

I am having problems with light mortar joints on my project. It is from inconsistent water content in the mortar and inconsistent tooling of joints. I used Holcim mortamix type N (light grey) and Hanson brick 222 red. Is there an acid stain or toner that I can spray on the wall and it will only darken the joints and not affect the brick? If you know of anything that will help please respond.

[concretemasonry]

It is most likely the color difference is due to the timing for striking and creating a different smooth texture that has more of a cement skim and looks lighter. Even wet brick or a wet batch can be evened out by waiting and striking at the right time.

An acid stain will not so what you want.

I hate to give recommendations when there are people around when there are more qualified masons to make suggestions.