Painting exterior brick gives your home a refreshed look while adding a layer of protection against weather damage.
When approached correctly, painting exterior brick is a lasting investment that stands up to harsh weather. Done right, it can last for years — but the key is preparation, the right paint, and correct application technique.
Before you pick up a brush, there are several things to understand: brick is porous, it holds moisture, and not all paints bond well to it.
Skipping prep steps is the most common reason this type of project fails early. Whether you want a bold new colour or simply want to protect aging masonry, the steps covered here will help you get it right the first time.
What Does Painting Exterior Brick Actually Mean?
Applying paint directly onto a masonry surface on the outside of a building is different from painting drywall or wood siding.
Brick has a textured, porous surface that absorbs moisture and expands slightly with temperature changes. That means regular latex paint may not be enough on its own.
When done properly, painting exterior brick seals the surface, reduces moisture penetration, and dramatically changes the curb appeal of a home. Many homeowners in Winnipeg choose to update their masonry to modernize older homes or unify the look of mixed exterior materials.
It is important to know that once you commit to painting exterior brick, it is very difficult to reverse. The paint soaks into the pores of the brick and mortar, which means stripping it later requires significant effort.
This is why choosing the right materials and doing thorough prep work matters so much.
Things To Know Before You Start
- Brick must be fully dry. Wait at least 7 to 10 days after rain before painting. Moisture trapped beneath the paint causes bubbling and peeling.
- New brick needs time to cure. Freshly laid brick contains alkali that can break down paint. Wait at least a year before tackling new masonry.
- Efflorescence must be removed. This is the white, chalky residue that appears on brick surfaces. It blocks paint adhesion entirely.
- Mortar condition matters. Cracked or crumbling mortar should be repaired before you begin. Paint cannot fill structural cracks.
- Masonry primer is not optional. A breathable primer lets moisture escape while helping paint bond to the surface.
- Climate affects drying time. In Winnipeg’s climate, exterior masonry work is best done between May and September when temperatures stay above 10 degrees Celsius.
How to Prepare the Surface Before Painting
Preparation is the most important part of any exterior masonry project. Rushing through this stage leads to paint that peels within a season.
Clean the Surface Thoroughly
Start by power washing the brick to remove dirt, dust, moss, and loose mortar. Use a pressure washer on a moderate setting — too much pressure can damage the mortar joints. If there is mould or mildew present, treat the area with a diluted bleach solution and scrub with a stiff brush. Rinse well and allow the surface to dry completely.
If you see white staining (efflorescence), use a masonry cleaner or a mild acid wash to dissolve it. Rinse thoroughly and allow several days of drying time before moving forward.
Repair Cracks and Damaged Mortar
Once the surface is clean and dry, inspect every section of the wall. Fill cracks with a matching mortar mix or masonry caulk. Any holes, chips, or gaps larger than a fingernail should be patched. Painting over damaged brick does not hide the damage — it often makes it more obvious once paint is applied and dry.
Apply a Masonry Primer
A breathable masonry primer creates a consistent base for the topcoat to bond to. It also prevents the brick from absorbing too much paint, which would leave a patchy finish. Roll primer on using a thick-nap roller (at least 19mm) to push it into the texture of the brick and mortar. Let it cure fully before applying your topcoat.
What Kind of Paint Works Best on Brick?
Choosing the correct paint is just as critical as prep work. Here is a breakdown of the most suitable options for exterior masonry:
| Paint Type | Best Use | Key Benefit |
|---|---|---|
| Elastomeric Paint | Older or cracked brick | Stretches with temperature changes, seals minor cracks |
| Masonry Latex Paint | Sound brick in good condition | Breathable, easy to apply, wide colour range |
| Mineral-Based Paint | Historic or heritage masonry | Bonds chemically, extremely durable |
| Waterproof Masonry Paint | High-moisture areas | Strong moisture barrier, ideal for foundations |
Elastomeric paint is widely recommended for painting exterior brick in climates like Winnipeg’s, where freeze-thaw cycles put stress on masonry surfaces. It stays flexible so it does not crack when brick expands and contracts with temperature shifts.
Avoid standard exterior latex that is not labelled for masonry use. It may look fine at first but will likely peel within a few years because it cannot handle the porosity and movement of brick.
Step-by-Step Process for a Clean, Lasting Finish
Once your surface is prepped and primed, follow these steps to apply paint properly.
Choose the Right Tools
The right tools make painting exterior brick far easier and give a more professional result. A thick-nap roller (19mm to 25mm) is the best tool for exterior masonry because it pushes paint into all the crevices. Use a smaller brush for mortar joints and edges. Sprayers can work on large surfaces but require more masking and cleanup. For most homeowners, a roller and brush combination gives the best control.
Work in Manageable Sections
Do not try to paint an entire wall in one session. Work in sections of roughly 1 to 2 square metres at a time. Apply paint generously, then go back over the section to even it out before the paint starts to set. This prevents lap marks where wet and dry paint meet.
Apply Two Coats
One coat is rarely enough. The porous surface absorbs the first coat unevenly. Let the first coat dry fully — usually 4 to 6 hours in warm weather — then apply a second coat for solid, uniform coverage.
Watch the Weather
Avoid painting in direct sunlight, on very windy days, or when rain is expected within 24 hours. Ideal conditions are overcast days with temperatures between 15 and 25 degrees Celsius. In Winnipeg, late spring through early fall offers the best window for exterior masonry work.
Common Mistakes to Avoid
Even experienced DIYers make errors when tackling masonry. Here are the most frequent problems and how to prevent them:
| Mistake | Why It Happens | How to Avoid It |
|---|---|---|
| Skipping the primer | Trying to save time | Always use a breathable masonry primer first |
| Painting wet brick | Not waiting after rain | Allow 7 to 10 days of drying time |
| Using the wrong paint | Choosing standard exterior paint | Only use masonry or elastomeric formulas |
| Ignoring mortar damage | Assuming paint will cover it | Repair all cracks before applying any product |
| Painting in extreme heat or cold | Poor timing | Keep temperatures between 10 and 30 degrees Celsius |
One of the most avoidable errors is skipping a test patch. Apply primer and paint to a small, hidden area and let it cure for a few days. This tells you how the surface responds before you commit to the entire wall.
How Long Does Painted Brick Last?
With proper prep and the right products, painting exterior brick can deliver a finish that lasts 15 to 20 years before needing a full repaint. Elastomeric coatings tend to hold up longer than standard masonry latex because of their flexibility and thickness.
Touch-ups may be needed in 5 to 7 years in areas exposed to direct sun or heavy rain. Keep leftover paint in a sealed container so you can blend touch-ups seamlessly when the time comes.
Routine maintenance helps extend the life of any painted masonry surface. Rinse the wall once a year to remove dirt buildup and inspect for cracking or peeling. Catching small issues early prevents larger repairs down the road.
When to Call a Professional
This kind of project is manageable for a confident DIYer, but there are situations where professional help is the smarter choice. If your brick has significant structural cracks, large areas of efflorescence, or moisture issues coming from inside the wall, those problems need to be diagnosed and resolved before any painting begins.
For Winnipeg homeowners who want the job done right the first time, True Coat provides expert exterior painting services backed by a 3-year craftsmanship warranty. Reach out through the contact page for a free, no-obligation estimate.
If you are still weighing your options, check out what the best approach to exterior painting for house projects looks like or review guidance from Winnipeg’s best exterior painters before deciding whether to DIY or hire a professional.
You may also find it useful to read about the benefits of professional siding and stucco painting services if your home has mixed exterior materials alongside the brick.
Final Thoughts on Painting Exterior Brick
Homeowners who take the time to do this right almost always end up satisfied with the results. Painting exterior brick is one of those projects where effort put into the early stages pays off for the next decade.
Painting exterior brick is one of the most impactful upgrades a homeowner can make — but it rewards patience and preparation far more than speed. Clean the surface, fix the mortar, prime properly, and choose a paint formula designed for masonry. Follow those steps and you will have a finish that holds up through Winnipeg’s tough weather seasons for many years ahead.
Frequently Asked Questions
Is painting exterior brick a good idea?
Yes, it is a good idea when done with the right preparation and materials. It protects masonry from moisture, modernizes your home’s appearance, and can extend the life of aging brick. The main trade-off is that the process is very difficult to reverse once complete.
What type of paint should be used on exterior brick?
Elastomeric or masonry-specific latex paint is the recommended choice. These formulas are designed to flex with temperature changes and allow moisture to escape, which prevents peeling and bubbling over time.
Do you need to prime brick before painting?
Yes, a breathable masonry primer is essential before applying topcoat. It helps the paint bond evenly, reduces over-absorption, and allows trapped moisture to escape through the wall surface. Skipping primer leads to uneven coverage and early failure.
How many coats of paint does brick need?
Brick typically needs two coats for full, even coverage. The first coat soaks into the porous surface and may appear patchy. The second coat fills in the gaps and delivers the smooth, finished result you are after.
Can painting exterior brick cause damage?
Yes, if done incorrectly. Using non-breathable paint traps moisture inside the wall, which can cause spalling — where the brick surface crumbles and chips over time. Always use breathable masonry paint and a compatible primer to avoid this problem.
