I want to paint a large external brick wall. The building is around 55 years old and the mortar between the bricks has recently been deteriorating fast due to excessive rain and wind, hence letting rainwater seep through the wall.
I am wondering what the most effective way of painting the wall is. Should I use brush, roller, sprayer, or a combination of them? I know this can be a matter of opinion but each method has its pros and cons that make it hard for me to decide. Spraying is relatively fast but the paint does not seem to penetrate the surface well. Rolling leaves a nice finish but works best on the surface of the bricks and not the mortar. Brushing is arduous and does not usually lead to a great finish.