PAINTING BRICK.
Objections: Chipping of the brick, and scaling of the paint.
The chipping may be on account of defective brick or otherwise.
Scaling may be caused by poor paint, or by dampness in the brick.
When called upon to paint brick, first see if the brick is dry. See that there is no place where water leaks in from the roof or cornice and soaks into the brick. A brick wall may look dry and still be damp inside. If you want paint to stay on brick, give the brick time to dry, after heavy and driving rains. It is always a bad plan to paint brick in the fall, after the autumn rains. The only real safe time to paint a brick wall is in summer, after a spell of hot, dry weather. You can not always wait for that, but you can tell the owner that it is unsafe to paint a brick wall until it has had time to dry. Why? Because in winter the moisture, which is shut in by the paint, will freeze, expand and throw off the paint or chip the brick.
Prime brick work with a thin coat of good paint mixed in pure linseed oil. Flow on the priming freely, and brush it well into the brick; for second coat, whatever paint you use, put in at least one-fourth white lead; make this coat one-third turps, and rub it well out. Give it a good body. For the last coat, use your color regardless of lead, unless you want it in to get your color. If you want a gloss, mix this coat with all boiled oil, and flow on. For flat, if your colors are ground in oil, use one-fourth oil and three-fourths turps, and if it don’t show flat when painted, it will flat in a short time. The last coat may admit of more oil or may not take as much, and flat. This depends upon the work when started, etc. Some painters make brick flating by breaking up the pigment in japan, and elastic varnish for a binder, and thin with turps. I prefer the oil for a binder, and have made the last coat one-half oil, and had a nice flat in a few weeks. I always ridicule the idea of painting brick flat, because it will not stand as long as an oil finish, and the oil finish will be flat enough in a few months.