How to Paint Exterior Brick White? | A Prep-First Masonry Job

Transforming dark brick into a crisp white facade is one of the highest-impact exterior upgrades you can make, but the finished look depends almost entirely on the prep work you do days before the paint ever touches the surface. Whether you want a solid opaque white or a softer, translucent whitewash, the process starts the same way: with a clean, dry, and properly repaired wall.

Prep The Brick The Right Way

Painting exterior brick white is a prep-first job. Skipping the cleaning or rushing the drying time is the most common reason paint peels or bubbles within a year. Start by removing dust, dirt, mildew, cobwebs, and any white powdery residue called efflorescence.

A pressure washer works well for large areas, but a stiff scrub brush with a masonry cleaner is just as effective for smaller walls. After washing, the brick must dry completely. Sherwin-Williams recommends waiting at least 24 hours after pressure washing before applying outdoor paint, while Lowe’s advises allowing up to two full weeks for brick to dry all the way through after power washing. When in doubt, wait longer — damp brick will ruin the paint job.

• Scrub or power wash the entire surface thoroughly.
• Let the brick dry for at least 24 hours, ideally longer.
• Repair any cracks or damaged mortar joints before painting.
• Protect windows, trim, and nearby plants with drop cloths and painter’s tape.

If the brick has structural cracks or crumbling mortar, address those issues first. Cracked joints often need repointing before any coating goes on. Painting over damaged mortar just traps moisture and speeds up further deterioration.

Choose The Right Primer And Paint

Brick is porous and alkaline, so it needs products made specifically for masonry. A high-quality alkali-resistant masonry primer is the recommended base. This type of primer seals the porous surface and helps the top coats bond properly.

For the finish coats, use a breathable paint that lets moisture escape — either a product specifically formulated for brick or a 100% acrylic masonry paint. Skip general-purpose interior paints entirely; they trap moisture and will blister on exterior brick. The home improvement guidance from Lowe’s and other trusted sources consistently points to these masonry-specific products as the only way to get a finish that lasts.

The right tools matter just as much as the paint. A thick-nap roller — typically 3/4-inch — is the go-to for brick because it pushes paint into the texture and joints. Use a brush for cutting in around edges and for working paint into mortar joints the roller can’t reach.

If you’re comparing top exterior white paint options before buying, our tested roundup of exterior white paints breaks down the best performers for exactly this kind of masonry project.

Apply The Paint For Full Coverage

Plan for at least two coats, and expect three if your brick is dark or heavily textured. Apply the paint when temperatures stay between 50°F and 85°F, and avoid painting in direct sun, which dries the paint too fast and creates lap marks. Keep a wet edge as you work so each roller pass blends into the previous one.

Work in manageable sections, starting at the top of the wall and moving down. This prevents drips from running over freshly painted areas. After the final coat cures fully, some homeowners add a clear masonry sealer for extra protection against moisture and staining — but only if it’s compatible with the paint you used. Check the paint manufacturer’s recommendation before sealing.

Whitewash As A Translucent Alternative

If you want the brick texture to show through rather than a solid white finish, whitewash is the better route. A standard starting mix is a 50/50 solution of white latex paint and water, though you can adjust between roughly one part paint to two parts water (more translucent) and two parts paint to one part water (more opaque).

Apply it in small sections, starting at the top, and wipe or dab off the excess while it’s still wet to keep the brick texture visible. Work quickly — the thinner mix dries fast. Use only water-based latex paint for this technique; oil-based paint won’t mix properly with water.

Safety note: if your brick was previously painted and the home is older, the old paint may contain lead. Have it tested or hire a professional for removal before you disturb the surface.

FAQs

How long does exterior brick paint last?

With proper surface prep, the right masonry primer, and breathable acrylic paint, a quality exterior brick paint job typically lasts 10 to 15 years before needing a fresh coat. The lifespan depends on your local climate, sun exposure, and whether the original prep and priming were done thoroughly the first time.

Can you paint brick without priming it first?

You can, but it’s not recommended. Brick is porous and highly alkaline, so skipping the primer means the top coats will soak into the surface unevenly and are far more likely to peel or blister over time. An alkali-resistant masonry primer seals the brick and gives the paint a stable base to bond with.

Does painting brick damage it?

Painting brick can trap moisture if you use a non-breathable paint, which may lead to spalling — where the face of the brick flakes off. Using breathable masonry paint formulated for brick allows moisture to escape and prevents this issue. The other major risk is that painting is permanent; removing paint from brick is difficult and destructive.