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Yes. Stucco takes paint well if cracks are repaired, the wall is washed and dried, and new stucco has cured for at least 30 days. The coating must let water vapour escape, or trapped moisture can blister it. Paint on dry days within the label's temperature range, often about 10°C and rising.
Can every kind of stucco be painted?
Most stucco can be painted, but check what you have first. Traditional cement stucco, synthetic stucco (EIFS) and stucco that was painted before each need a different approach. Stucco that has never been painted is the biggest decision, because once it is painted, it will need repainting from then on.
Unpainted stucco usually gets its colour from pigment in the finish coat itself. That finish never needed paint. Painting it trades a colour you never had to maintain for one you will.
EIFS:
an exterior insulation and finish system: a thin, stucco-like finish over foam insulation board, often called synthetic stucco.
Some newer GTA homes have EIFS rather than cement stucco, and the two can look alike. Tap the wall with your knuckles. Cement stucco sounds solid and feels hard. EIFS sounds hollow, and a firm press with your thumb may give slightly.
EIFS makers publish their own recoating guides. They call for coatings made for their systems, typically a breathable acrylic, and warn against oil-based paint and high-pressure washing. One maker generally recommends colours with a light reflectance value of 20 or more, which rules out the darkest shades. Another warns that a ladder leaned against the finish can damage it.
What repairs does stucco need before painting?
Anything that lets water in gets fixed first: cracks, loose or hollow patches, and failed caulking. Paint can't hold back water that is already getting behind the stucco. Hairline cracks are common and usually cosmetic, but wider cracks, bulges and hollow spots need a proper stucco repair.
One major brand's data sheets call for cracks to be filled with an elastomeric patch or sealant. Loose stucco and salt deposits come off first.
Efflorescence:
white, powdery salt deposits left on masonry or stucco when water moves through it and evaporates.
Efflorescence is a symptom, not just a stain. Brush it off, then find where the water comes from. Overflowing gutters, downspouts that empty against the wall and open joints around windows are the usual suspects.
New patches, like new stucco, are strongly alkaline while they cure. One major brand asks for at least 30 days of curing before paint. If the job can't wait, it allows 7 days with a masonry primer made for fresh, high-pH surfaces.
How should stucco be cleaned before painting?
Wash it gently, treat any mildew, and let it dry fully. Stucco is porous and holds water, so high pressure can damage the surface and soak the wall. Give it at least a day or two of dry weather before any paint goes on.
Mildew looks like dirt but won't rinse off. It needs a mildew remover, or it can grow back through the new paint. Look for it on north walls and behind shrubs.
Old painted stucco often chalks. If the surface is still powdery after washing, a masonry conditioner or primer binds it so the new paint can grip. For more on when primer is needed, see do you need primer before painting.
Which paint is best for stucco?
For most stucco, a 100% acrylic masonry or exterior paint that lets water vapour through. Stucco takes on moisture from rain and from inside the house, and it has to be able to dry out. A coating that seals that moisture in can blister and peel.
Vapour permeability:
how easily water vapour passes through a coating; a breathable paint has high vapour permeability.
| Coating | Good for | Watch for |
|---|---|---|
| 100% acrylic masonry or exterior paint | Most stucco repaints | Won't bridge cracks that keep moving |
| Elastomeric coating | Walls with many hairline cracks | Often less breathable; can trap moisture in a damp wall |
| Coating from the EIFS system's maker | EIFS walls | Follow that maker's recoating guide |
Elastomeric coating:
a thick, rubbery exterior coating that stretches to bridge hairline cracks.
Elastomeric coatings have a place, but they only bridge cracks when applied as thick as the label states. They are not a cure for a wall that is taking on water. Fix the water first, then choose the coating. The same reasoning applies to masonry: see should you paint brick.
Flat or low-sheen finishes are usual on stucco. They hide patches and touch-ups better than glossier paint, and one EIFS maker advises against high gloss on its systems.
How is paint applied to stucco?
Usually by spraying and back-rolling, in two coats. The texture is full of small pockets that a roller alone can miss, and a sprayer alone can leave thin spots. Back-rolling works the paint into the texture so the coat is even.
Back-rolling:
rolling paint right after it is sprayed, to work it into the surface and even out the coat.
Rough stucco takes more paint per square metre than smooth siding, so the quote should allow for it. Windows, stone, brick and trim are masked before any spraying starts.
When can stucco be painted in the GTA?
On dry, mild days, usually from late May to September. Many exterior paints need about 10°C and rising, and the label sets the limit for each product. Stucco also holds water after rain, so it needs longer to dry out than siding.
Avoid painting any wall in hot, direct sun, which dries the paint too fast. In fall, cold nights and heavy dew shorten the working day. New stucco needs its 30 days of curing on top of that.
For the weather in detail, see the best time to paint a house exterior. If fall is your only window, read how cold is too cold to paint outside first.
How much does it cost to paint stucco?
Stucco painting is quoted once we've seen it, because the price depends on the wall area, the height and the condition of the stucco. Repairs, mildew and a change of colour all move it.
Get My Estimate starts the process. A crew lead then checks every surface for repairs, from your photos and usually in person, since stucco hides its problems. Your written, itemized quote arrives within 24 hours of seeing the job, naming the paint by brand and line, so you can confirm it suits stucco.
The work carries a written 3-year workmanship warranty. It excludes moisture intrusion and substrate failure, which is one more reason the repairs come first. See stucco painting for the service, and the exterior painting cost guide for how stucco compares with other exteriors.