Transforming the exterior of your home starts with the largest surface area, and for many, that is the brick garage. A fresh coat of paint can dramatically update curb appeal, protect the masonry from the elements, and tie the structure into the rest of the property’s aesthetic. However, unlike painting drywall, covering brick requires a specific strategy to ensure the color adheres evenly and lasts for years.
Assessing Your Brick and Current Finish
Before you purchase a single pint of paint, you must evaluate the current state of your garage. Inspect the brick for any signs of damage, such as crumbling mortar or efflorescence, which is that white, powdery residue left behind by water seeping through the masonry. You also need to determine if the brick is painted or exposed. If you are covering an existing painted surface, you will need to strip it down to the bare brick or use a bonding primer to ensure the new layer does not bubble and peel. The porosity of the brick itself can vary greatly; older, weathered brick absorbs paint differently than new, kiln-fired brick, so understanding this will guide your product selection.
Choosing the Right Paint and Tools
Selecting the correct paint is the most critical step in a successful brick painting project. You should never use standard indoor latex paint, as it will crack and peel under UV exposure and temperature fluctuations. Instead, you must choose a high-quality exterior masonry paint or a elastomeric paint specifically designed for brick. These formulas are flexible and breathable, allowing the substrate to expand and contract while providing superior adhesion and UV resistance. For tools, you will need a combination of a high-pressure washer, sturdy wire brush, masonry caulk, a thick-nap roller (typically 3/4 inch), and angled brushes for cutting in around windows and doors.
Preparing the Surface
Surface preparation is 80% of the battle when painting brick, and rushing this stage is the primary reason DIY projects fail. Start by clearing the area of any furniture, plants, or debris. Then, use the high-pressure washer to thoroughly clean the brick, blasting away dirt, mold, and old mildew. Allow the surface to dry completely for at least 48 hours; painting a damp brick traps moisture and leads to future failure. Once dry, use the wire brush to scrape away any loose material from the mortar joints. Fill cracks and gaps with masonry caulk, smoothing it flush with the brick face. Finally, use painter’s tape to protect windows, trim, and the adjacent walls to create clean, sharp lines.
Priming for Success
Applying a primer is non-negotiable when painting brick. Because the material is so porous, it will suck the paint deep into the surface, requiring multiple coats of topcoat to achieve solid opacity. A dedicated masonry primer bonds to the rough texture and the existing color, creating a uniform base for the finish coat. If you are making a dramatic color change—such as going from a dark brick to a light gray—you might need two coats of primer to prevent the underlying shade from bleeding through. This step ensures better coverage and saves you time and paint in the long run.
Applying the Finish Coat
When you are ready to apply the color, start by using an angled brush to "cut in" around the edges, where the roller cannot reach. Pay close attention to the mortar lines, as these recesses need to be coated thoroughly to prevent the brick from showing through. Once the edges are complete, use the roller to apply the paint in a "W" or "M" pattern. This technique helps distribute the paint evenly across the textured surface without leaving streaks or bubbles. Depending on the coverage and the color intensity, you will likely need two coats. Allow sufficient drying time between layers, typically 4 to 6 hours, but always follow the manufacturer's instructions.
Maintenance and Longevity
Unlike painting a wooden shed, painting brick is a long-term investment, but it is not permanent. The paint will slowly degrade due to UV radiation and harsh weather, so monitoring the finish is essential. Look for cracking, chipping, or fading as signs that it is time to refresh the look. Power washing the surface every few years can extend the life of the paint, but you should avoid using the high-pressure setting directly on the joints, as this can erode the mortar. When the time comes for a touch-up, spot treatment is often sufficient, saving you the effort of a full-scale reapplication.
