Do You Need To Prime Exterior Walls Before Painting. Decorative artist and paint expert shauna gallagher demonstrates how to prime walls in four scenarios: The surface is porous when it absorbs water, moisture, oil, odors or stains.
If you do plan taking on preparing your exterior walls for painting, and like this article, let us know!
A painter rolling primer onto a painted wall. Canvas priming uses a material called gesso. Same reason painters prime before painting, to seal the surface and prevent the paint from being absorbed and drying too quickly, to get better adhesion. How much paint do you need?