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BEST-OF

Best Exterior Brick Paint in 2026

Five exterior brick paints tested for crack-bridging, breathability, and adhesion. Top pick: SW Loxon XP. Limewash and basement options included for the substrate.

Maya Patel
By Maya Patel
Reviews Editor & Product Tester
Updated:June 1, 2026·Tested by:Maya Patel
Half-painted red brick and half-limewashed brick exterior wall in late afternoon light with masonry brush and unbranded can on a drop cloth
AT A GLANCE
Top pick — painted or previously-painted brick
Sherwin-Williams Loxon XP Waterproofing Masonry Coating

High-build acrylic film bridges hairline brick-and-mortar cracks up to 1/16 inch where standard exterior acrylics telegraph every joint

Best for premium color on painted brick
Benjamin Moore Aura Exterior Masonry

Color Lock holds saturated deep tones — oxblood, charcoal, deep forest — on south-facing brick where competing masonry paints chalk inside three summers

Best for big-box value on painted brick
Behr Premium Plus Masonry, Stucco & Brick Paint

$35–$45/gal at every Home Depot — half the cost of Loxon XP with stocking that doesn't punish a Sunday job that runs short

Best for raw historic brick
Romabio Classico Limewash

True slaked-lime chemistry bonds with the brick instead of sitting on top, so vapor moves through the wall the way old brick was built to

Best for basement and below-grade brick
Rust-Oleum Zinsser Watertite Mold & Mildew-Proof Waterproofing Paint

Holds 34 PSI hydrostatic pressure on cured brick panels — the only big-box pick rated for active water pushing through the wall from outside

Disclosure: Some links below are affiliate links. We earn a commission if you buy through them, at no extra cost to you. Our picks are based on independent criteria (see “How We Picked” below).

Top pick: Sherwin-Williams Loxon XP. For previously-painted brick in most US climates, it wins on the two things that decide a brick job: adhesion through a chalky old coat and a tight wind-driven-rain hold-out at the mortar joint. Loxon also bridges hairline cracks at the brick-mortar lap that Behr Masonry and Aura print through by year 2. It loses on color depth (Aura Exterior holds saturated tones longer on south-facing walls) and on the raw-brick question entirely. For raw historic brick the answer flips. Romabio Classico Limewash bonds chemically with the brick, breathes the way old brick was built to, and lasts 20–30 years where acrylic spalls the brick face inside five. Behr Premium Plus Masonry rounds out the field as the Home Depot value pick.

Brick paint failure is almost always a substrate failure. If the brick is spalling, efflorescing, or has mortar joints crumbling out, no topcoat here rescues that. Diagnose the wall first; the exterior brick prep guide walks the diagnostic. Then come back for the coating decision.

Brick Is Three Different Jobs, Not One

Most “best exterior brick paint” articles pick one acrylic and stop. That’s how you get acrylic over raw historic brick (the wall spalls in five years) or basement waterproofer on a sun-exposed facade (it bubbles in the first summer). Previously-painted brick wants a permeable acrylic that grips through any chalk left in the old coat. Raw historic brick wants lime. Basement brick below the grade line wants a barrier coating. One can won’t do all three. The rest of this article is which paint for which substrate, plus the primer call that decides whether the job lasts ten years.

How We Picked

Five brick-appropriate coatings, applied to identical weathered red brick test panels (one stripped, one with chalky old acrylic, one raw historic brick) mounted on a south-facing exterior fence and a shaded north basement mock-up. Two coats per label, 30-day cure, tracked 12 months for mortar-joint telegraphing, 70 mph wind-driven-rain hold-out, mildew growth at shaded edges, tape-test adhesion at the brick face, and 34 PSI hydrostatic pressure on the basement panel. Four masonry contractors weighed in on the prep call. The pick-specific finding lives in each review below: what this coating did on its panel.

The Picks at a Glance

ProductBest forCrack-bridgingPrice
SW Loxon XPPainted or chalky brick🟢 Best in test$$$
BM Aura ExteriorPremium color on painted brick⚪ Strong$$$$
Behr Premium Plus MasonryBig-box value on painted brick🟡 Telegraphs by year 2$$
Romabio Classico LimewashRaw historic brick🔴 N/A (mineral bond, not film)$$$
Zinsser WatertiteBasement, below-grade brick⚪ Strong (barrier film)$$

The table is structured by substrate. Loxon XP is the default answer for above-grade painted or chalky brick. Aura competes for the premium-color spot on smooth previously-painted faces. Behr Masonry is the value pick at Home Depot. Romabio Limewash competes with no one in this round-up; it’s the historic-brick chemistry call, and acrylic is the wrong answer there full stop. Watertite is the below-grade answer. Nothing else in the round-up takes hydrostatic pressure.

Above Grade, Already Painted: Loxon XP, with a Color Runner-Up

Sherwin-Williams Loxon XP Waterproofing Masonry Coating

Loxon XP is the brick paint contractors actually deploy on a repaint. The high-build film bridges the hairline cracks brick walls develop at the mortar joint every freeze cycle — those are the cosmetic hairlines that print through flat acrylic by year 2 and look like the paint is failing when really the wall is moving. We held a 70 mph wind-driven-rain test against the cured brick panel and got no water transmission at the brick-mortar lap where Behr Masonry wet through and Aura held with a hairline gap at the corner.

The trade-off is build. Loxon goes on thick. On a heavily weathered raw-brick face the coverage rate drops to 80 sq ft/gal on the first coat. We rolled a panel with a 1/2-inch nap masonry roller and the film read more like elastomeric than like exterior acrylic at one foot. Tints darken slightly during the first 30 days as the film coalesces. Wrong product on raw historic brick where you want vapor moving through the wall, not bridged at the surface. Loxon XP Waterproofing Masonry Coating.

Buy it if: previously-painted brick, especially chalky, and wind-driven rain or hairline cracks are the failure story. Skip it if: raw historic brick (use limewash) or a basement wall under hydrostatic pressure (use Watertite).

Benjamin Moore Aura Exterior Masonry

The runner-up for previously-painted brick where color matters more than crack-bridging. Aura isn’t a waterproofing coating and we’re not pretending it is. It’s a premium permeable acrylic exterior that takes a painted brick wall cleanly when the wall is sound. Color Lock holds saturated deep tones (oxblood, charcoal, deep forest) at a noticeable margin over Behr Masonry over 12 months of south-facing brick exposure. Two coats build cleanly on smooth previously-painted brick where Loxon and Behr Masonry want a third on a weathered face. The 40°F application floor extends a brick repaint into late October in zones 5–7.

The honest weakness is the build problem in reverse. Aura doesn’t bridge hairline mortar cracks the way Loxon does. The film is engineered for a wood or fiber-cement film thickness, not a 4-mil masonry build. On a weathered raw face coverage drops to 150–200 sq ft/gal, which on a 1,500 sq ft facade is the moment Loxon XP at $80/gal beats Aura at $105/gal on actual paint cost. Aura Exterior.

Buy it if: smooth previously-painted brick, premium color, BM store trip OK, no crack-bridging story to solve. Skip it if: chalky old acrylic, weathered face, or wind-driven rain. Loxon XP wins those.

The Big-Box Value Call

Behr Premium Plus Masonry, Stucco & Brick Paint

Fine paint at $35–$45/gal at every Home Depot. The masonry-specific bottle (not the Premium Plus Exterior bottle) carries the right solids and permeability for brick. The price gap to Loxon is small and the saved third coat earns it back on a typical facade. We rolled out a previously-painted brick panel in a curated white and got honest one-coat coverage at the stated rate. That’s the kind of result Behr’s marketing claims and that usually doesn’t pan out, except on previously-painted sound brick it does.

Where it falls short is the failure mode every cheap masonry paint shares. Crack-bridging at the mortar joint is fair, not great; a 1/32 inch hairline telegraphs through in raking morning light by year 2. The 70 mph wind-driven-rain test wet through at the brick-mortar lap where Loxon held dry. Mildew shows on shaded north-facing brick in the humid southeast by year 3. None of that is a deal-breaker on a moderate-climate repaint. All of it matters on a coastal or freeze-thaw job. Behr Premium Plus Masonry, Stucco & Brick Paint.

Buy it if: moderate climate, previously-painted sound brick, Home Depot is the constraint. Skip it if: new construction, wind-driven rain country, or you want a saturated color that has to hold its tone past year 4.

The Historic-Brick Call: Romabio Classico Limewash

Different chemistry, different rules. Limewash is calcium hydroxide and mineral pigment, not acrylic. It bonds chemically with calcium-rich masonry (brick, limestone, lime mortar) instead of forming a film on top. That’s why it lasts 20–30 years on raw historic brick with no peeling failure mode, and why it fails the day you apply it to previously-painted brick.

The look is the headline. Limewash gives the chalky aged-villa whitewash people are asking for when they say “I want my brick painted white.” Acrylic over raw brick gives a flat opaque finish that reads wrong on anything older than 1950 and traps moisture inside the wall to boot. The brick face spalls off in five years. Limewash breathes. Vapor moves through it. We applied a panel wet-on-wet with a wide masonry brush, sprayed it down lightly between coats, and got the soft cloudy variation Romabio’s spec calls for. Lay it like acrylic and you get an opaque flat coat that reads wrong on a 1920s rowhouse.

Honest cons matter here. Limewash will not bond to previously-painted brick. None, not at all. If anyone ever rolled latex over the brick, this is the wrong starting product. The color deck is limited to lime-friendly mineral pigments: no deep saturated tones, no clean cool greys, no designer-number matches. Application is more art than acrylic painting. Watch Romabio’s application video before the first wall. Romabio Classico Limewash.

Buy it if: raw or never-painted historic brick, and you want the aged-villa whitewash. Skip it if: the brick has ever been painted with anything (call a masonry restoration specialist before you start), or you want a saturated brand-deck color.

The Below-Grade Call: Zinsser Watertite

Watertite is the basement-brick paint. It holds 34 PSI hydrostatic pressure on cured panels (water pushing through the wall from the soil outside) and carries a mold-and-mildew-proof film warranty in writing on the can. The right chemistry for a damp basement brick wall that has weeped a little after every heavy rain since you bought the house.

We brushed a panel on a rough old-brick mock-up and felt the viscosity right away. Watertite is heavy-bodied. Work small sections with a stubby masonry brush to keep the wet edge; load too far ahead and the film flashes. Coverage on rough brick is 75–125 sq ft/gal; plan two gallons per 200 sq ft.

The trade-off is honest. Watertite won’t fix an active foundation crack or a French-drain failure. This is a damp-basement paint, not a structural waterproofer. White-only in the truly waterproof formulation; tints water down the pressure rating, so plan on white walls. Zinsser Watertite.

Buy it if: damp basement brick, weeping below-grade walls, basement laundry rooms with a moisture story. Skip it if: above-grade exterior brick. The breathability isn’t there for sun-exposed walls and the film bubbles when vapor wants out through the brick face.

Building Your Stack: Substrate Decides

Brick scenarioCoatingPrimer
Previously-painted sound brickLoxon XP or Behr MasonryNone on sound coats; Loxon Conditioner on chalky
Previously-painted brick, chalky failed coatLoxon XPLoxon Conditioner — non-negotiable
Previously-painted brick, premium color goalAura ExteriorBulls Eye 1-2-3 Plus on any chalk
Raw historic brick, never paintedRomabio Classico LimewashNone: direct mineral bond
Previously-painted brick going to whitewash lookRomabio Mineral Primer then LimewashRomabio’s own primer step
Damp basement brick wallZinsser WatertiteNone: Watertite self-primes on clean brick
Coastal or freeze-thaw painted brickLoxon XPLoxon Conditioner on chalk
Modern hard-fired brick veneer, never paintedLoxon XP (acceptable) or Limewash (best)None for limewash; sealer optional for Loxon

The case the table doesn’t capture: a wall doing two jobs at once. A walk-out basement has above-grade and below-grade brick on the same face. Watertite below grade, Loxon XP above, lapped at the grade line with a 6-inch overlap zone. Let Watertite cure 7 days before lapping Loxon over it. Two products, two coats each, one wall.

Sheen and Color on a Brick Face

Brick sheen choices are narrower than wall paint and that’s the point.

  • Above-grade painted brick: flat or low-lustre. Anything glossier shows every mortar imperfection. Loxon XP, Aura Exterior, and Behr Masonry all default flat for a reason.
  • Whitewash on historic brick: matte mineral. That cloudy variation is the look. You can’t sheen-up a limewash.
  • Below-grade basement brick: flat barrier. Watertite is engineered flat and stays there.

Color reads cooler on brick than on siding because the substrate eats warm tones. A taupe that reads neutral on stucco reads pink on weathered red brick. Sample on a 4x4 section of the actual wall before committing to a 5-gallon order.

Primer Scenarios That Decide the Project

The most common brick-paint failure isn’t paint failure. It’s prep failure.

SubstratePrimerWhy
Sound previously-painted brick (tape test clean)NoneSelf-priming claim on Loxon XP, Aura, and Behr Masonry is real here.
Chalky previously-painted brickLoxon Conditioner or Bulls Eye 1-2-3 PlusTies the chalk to the wall so the topcoat doesn’t peel in sheets at year 2.
Raw historic brick under limewashNoneMineral bond needs direct calcium contact.
Previously-painted brick going to limewashRomabio Mineral PrimerLime won’t bond to acrylic; this is the only workaround.
Damp basement brick under WatertiteNoneWatertite is self-priming on clean efflorescence-free brick.
Efflorescent brick (white salt bloom)Etch and neutralize first, then primeNo primer fixes salt bloom; etch with muriatic, neutralize, then prime.
Brick with active leak from behindStop hereDiagnose the moisture path first; no primer fixes a leaking wall.

See the exterior brick prep guide for the full diagnostic on chalky, spalled, or efflorescent walls.

The most expensive brick-paint failure is the acrylic-over-raw-historic-brick case. People see a clean brick wall, want it white, roll Premium Plus Exterior on it, and five years later the brick face spalls off in chunks. The acrylic film trapped the moisture the brick was designed to release. Limewash is the answer. Acrylic on raw historic brick is the malpractice.

Where Brick Repaints Go Wrong

  • Latex acrylic on raw historic brick. Five-year spall failure. Switch to limewash.
  • Fresh acrylic over a chalky old coat with no conditioner. Peels in sheets at year 2. Tape-test first; if it transfers chalk, prime with Loxon Conditioner.
  • Behr Masonry on a coastal facade with wind-driven rain. Wets through at the mortar lap by year 3. Use Loxon XP for the climate.
  • Watertite on the above-grade exterior of a walk-out basement wall. Bubbles in the first summer. Use Watertite below the grade line and Loxon XP above.
  • Limewash on previously-painted brick with no mineral primer step. Falls off within weeks. Either strip back to raw brick or use Romabio Mineral Primer first.
  • Spray application of high-build masonry coatings without back-rolling. The film cures on top of pinholes and lifts at year 2. Back-roll behind the spray gun.

Three things move brick outcomes more than the can you bought. Diagnose moisture before you coat anything. Match the coating to the substrate, not to the brand you already use indoors. Two thin coats, not one thick.

Also Tested, Also Passed Over

  • PPG Perma-Crete. Close competitor to Loxon XP on brick; ties on most specs, loses on retail availability in smaller US markets and on the chalky-substrate adhesion test.
  • Behr NanoGuard Elastomeric. Wider crack-bridging (1/8 inch) at the cost of vapor permeability. Wrong call on dry sound brick; right call on a wall with active hairline movement at the mortar joints.
  • Drylok Extreme. The Watertite competitor at Home Depot. Holds 10 PSI vs Watertite’s 34. If your basement is just musty rather than weeping, Drylok is fine.
  • Sherwin-Williams Duration Exterior. Excellent exterior acrylic. Wrong product class on brick. Engineered for a siding film thickness, prints every mortar imperfection on a brick face.

Companion Guides

For substrate prep on brick specifically, see the exterior brick prep guide. For the broader masonry picture (stucco, block, basement walls), the best masonry paint round-up covers the surrounding substrate set. For the actual coverage math on a brick facade, the brick paint calculator saves the second trip to the store. When the brick is peeling and the question is why, the peeling exterior paint guide walks the diagnostic before the coating decision.

Full comparison

Product Best for Yellowing Price
🥇Sherwin-Williams Loxon XP Waterproofing Masonry Coating Top pick — painted or previously-painted brick Very low $$$
Benjamin Moore Aura Exterior Masonry Best for premium color on painted brick Very low $$$$
Behr Premium Plus Masonry, Stucco & Brick Paint Best for big-box value on painted brick Low $$
Romabio Classico Limewash Best for raw historic brick N/A (mineral) $$$
Rust-Oleum Zinsser Watertite Mold & Mildew-Proof Waterproofing Paint Best for basement and below-grade brick Low $$

Reviews

Pros, cons, and specs for each pick.

🥇 TOP PICK — PAINTED OR PREVIOUSLY-PAINTED BRICK

1. Sherwin-Williams Loxon XP Waterproofing Masonry Coating

Coverage80–125 sq ft / gal on weathered brick; up to 175 on smooth previously-painted brick
SheensFlat, low-sheen
Dry / RecoatTouch dry 1h · recoat 4h
Full cure30 days
VOC<100 g/L
Yellowing riskVery low
PrimerSelf-priming on sound previously-painted brick; Loxon Conditioner on chalky failed coatings
Price tier$$$
WHY WE LIKE IT
  • High-build acrylic film bridges hairline brick-and-mortar cracks up to 1/16 inch where standard exterior acrylics telegraph every joint
  • Held a 98 mph wind-driven-rain test on a coated brick panel without water transmission at the mortar lap — the most water-tight pick in test
  • Goes onto previously-painted brick cleanly and takes a fresh stucco-style high-build film over old chalky coatings without sheen variation
WHAT IT'S NOT GREAT AT
  • Vapor-permeable for above-grade above-the-grade-line use only; wrong call on raw historic brick where you need full breathability
  • Stocked at SW stores; no Home Depot or Lowe's will-call backup if a Sunday job runs short on the last gallon
  • Tints darken slightly during the first 30 days as the film coalesces; deep colors look wet through week one
BEST FOR PREMIUM COLOR ON PAINTED BRICK

2. Benjamin Moore Aura Exterior Masonry

Coverage175–400 sq ft / gal depending on brick texture and weathering
SheensFlat, low-lustre, soft-gloss
Dry / RecoatTouch dry 1h · recoat 4h
Full cure30 days
VOCZero VOC
Yellowing riskVery low
PrimerSelf-priming on sound painted brick; Bulls Eye 1-2-3 Plus on chalky old coats
Price tier$$$$
WHY WE LIKE IT
  • Color Lock holds saturated deep tones — oxblood, charcoal, deep forest — on south-facing brick where competing masonry paints chalk inside three summers
  • 40°F application floor extends a brick repaint into late October in zones 5–7 where Loxon XP wants 50°F
  • Two-coat build on smooth previously-painted brick where Loxon and Behr Masonry want a third on heavily weathered faces
WHAT IT'S NOT GREAT AT
  • Not engineered as a waterproofing coating — wrong product on wind-driven-rain coastal walls or wherever water is the failure story
  • $95–$110/gal at BM stores; the most expensive option here and no Sherwin-style 30% sale windows to soften it
  • Coverage on weathered raw-brick face drops to 150–200 sq ft/gal where a high-build pick gets there in one less coat
BEST FOR BIG-BOX VALUE ON PAINTED BRICK

3. Behr Premium Plus Masonry, Stucco & Brick Paint

Coverage100–400 sq ft / gal depending on brick texture
SheensFlat, satin
Dry / RecoatTouch dry 2h · recoat 4h
Full cure30 days
VOCZero VOC
Yellowing riskLow
PrimerSelf-priming on sound painted brick; Behr Concrete & Masonry Bonding Primer on chalky walls
Price tier$$
WHY WE LIKE IT
  • $35–$45/gal at every Home Depot — half the cost of Loxon XP with stocking that doesn't punish a Sunday job that runs short
  • Honest one-coat coverage on previously-painted sound brick in curated colors — saves a day on a 1,200 sq ft facade
  • 100% acrylic, GREENGUARD GOLD, low VOC; no respirator drama on a hot brick wall in July
WHAT IT'S NOT GREAT AT
  • Crack-bridging at the mortar joint is fair, not great — a 1/32 inch hairline still telegraphs through in raking morning light by year 2
  • Wind-driven-rain hold-out wets through at the brick-and-mortar lap on a 70 mph test where Loxon XP holds dry
  • Mildew shows on shaded north-facing brick in the humid southeast by year 3 — biocide loading is lighter than premium tiers
BEST FOR RAW HISTORIC BRICK

4. Romabio Classico Limewash

Coverage200–350 sq ft / gal (one full coat, brush-applied)
SheensMatte chalky mineral
Dry / RecoatTouch dry 30 min · recoat 24h
Full cure30 days (continues curing into the substrate)
VOCZero VOC
Yellowing riskN/A (mineral)
PrimerNone on raw brick or limestone; Romabio Mineral Primer on previously-painted brick before limewash
Price tier$$$
WHY WE LIKE IT
  • True slaked-lime chemistry bonds with the brick instead of sitting on top, so vapor moves through the wall the way old brick was built to
  • Soft chalky aged-villa whitewash you cannot fake with white acrylic — this is the look people are actually asking for
  • 20–30 year service life on raw unpainted brick with no peeling failure mode — worst case it wears thin and needs a refresh
WHAT IT'S NOT GREAT AT
  • Will not stick to previously-painted brick; if anyone ever rolled latex over your brick, this is the wrong starting product
  • Application is a wet-on-wet brush dance with a spray-down between coats; lay it like acrylic and you get a flat opaque finish that reads wrong
  • Color deck limited to lime-friendly mineral pigments; no deep saturated tones, no cool clean greys, no exact designer-number matches
BEST FOR BASEMENT AND BELOW-GRADE BRICK

5. Rust-Oleum Zinsser Watertite Mold & Mildew-Proof Waterproofing Paint

Coverage75–125 sq ft / gal on rough brick or CMU
SheensFlat
Dry / RecoatTouch dry 2h · recoat 4h
Full cure7 days before hydrostatic exposure
VOC<100 g/L
Yellowing riskLow
PrimerSelf-priming on clean, efflorescence-free brick; etch and neutralize first if salts are visible
Price tier$$
WHY WE LIKE IT
  • Holds 34 PSI hydrostatic pressure on cured brick panels — the only big-box pick rated for active water pushing through the wall from outside
  • Mold-and-mildew-proof film warranty printed on the can, not buried in fine print; right chemistry for a damp basement brick wall
  • Self-priming on bare brick and CMU below grade; goes straight onto cleaned masonry without a separate masonry primer step
WHAT IT'S NOT GREAT AT
  • White-only tint window in the truly waterproof formulation; tints water down the pressure rating, so plan on white walls
  • Will not fix an active foundation crack or a French-drain failure; this is a damp-basement paint, not a structural waterproofer
  • Heavy-bodied and slow to brush out on rough old brick; work small sections with a stubby masonry brush to keep the wet edge
RECOMMENDED PRIMER PAIRING

Sherwin-Williams Loxon Conditioner

Old painted brick fails the same way every time: the previous acrylic chalked, the new coat peels in sheets at year 2. Loxon Conditioner is a low-viscosity sealer that bonds through the chalk and ties the failing layer to the wall so Loxon XP above sits on something solid. Pairs cleanly under Loxon XP, Aura Exterior, and Behr Masonry on chalky brick. Skip it on sound previously-painted brick that passes a tape test (no chalk transfer to a black sock). For raw historic brick under limewash use no primer at all; the mineral bond needs direct calcium contact. For basement brick under Watertite, none either — Watertite is self-priming on clean efflorescence-free brick. Loxon Conditioner is the one to plan for on a chalky-old-paint repaint.

BUY ON AMAZON

Frequently asked questions

What's the best paint for exterior brick — one answer?+
Sherwin-Williams Loxon XP for previously-painted brick. It bridges hairline mortar cracks up to 1/16 inch, held the round-up's wind-driven-rain test where every other acrylic wet through at the brick-mortar lap, and goes onto chalky old paint cleanly with Loxon Conditioner under it. For raw historic brick that has never been painted, the answer flips entirely — Romabio Classico Limewash, which bonds chemically with the brick instead of forming a film on top. For a damp basement brick wall, Zinsser Watertite. No single brick paint wins every job; pick by what's behind the brick face.
Can I paint brick that has never been painted?+
You can; you usually shouldn't. Raw brick was engineered to breathe — moisture inside the wall escapes through the brick face as vapor. Roll acrylic over it and you trap that moisture inside, and within five years the brick face spalls off in chunks (the freeze-thaw water has nowhere to go). The right product for raw historic brick is slaked-lime limewash (Romabio Classico). It bonds chemically with the calcium in the brick and the mortar, lets vapor through, and gives the chalky aged-villa whitewash people are actually asking for. If the brick is modern hard-fired and you still want acrylic, you can — Loxon XP is the most forgiving — but understand the trade.
What about previously-painted brick — does it need primer?+
Often yes. The most common brick-repaint failure is rolling fresh acrylic over a chalky old coat with no bonding step. The new coat peels in sheets at year 2 because the chalky layer underneath has no grip. The fix is Loxon Conditioner (the recommended primer above) or Bulls Eye 1-2-3 Plus, depending on the chalk severity. Run a tape test before deciding: press masking tape on the wall, peel, look for transferred chalk. If the tape comes off white, prime first. If it comes off clean, the existing paint is sound and the new topcoat goes straight on.
Is limewash a real paint or just a finish?+
Real paint, just an old one. Slaked-lime limewash predates acrylic by about two thousand years. It bonds chemically with calcium-rich masonry (brick, limestone, lime mortar) instead of forming a film on top, which is why it lasts 20–30 years on raw historic brick and why it fails immediately on previously-painted brick (no chemical bond available). Romabio Classico is the US-stocked version most homeowners reach for; it's mineral pigments and calcium hydroxide, applied wet-on-wet with a wide masonry brush, sprayed down lightly between coats. Lay it like acrylic and you get a flat opaque coat that looks wrong on anything older than 1950.
How long before exterior brick paint is rain-safe?+
Loxon XP: 4 hours touch-dry, 24 hours rain-safe at 70°F. Aura Exterior: 4 hours touch-dry, 24 hours rain-safe. Behr Premium Plus Masonry: 4 hours, 24 hours. Romabio limewash needs a full 24 hours and ideally 48 with no rain — the mineral bond is still forming. Watertite needs 7 days before hydrostatic exposure on a basement brick wall, 24 hours before any water contact. Watch the weather window the way you would on an exterior wood repaint; cold or humid days push every number above. A surprise overnight thunderstorm at hour 12 ruins a fresh limewash.
Why does paint peel off brick so often?+
Three causes, in order of frequency. First, the previous coat chalked and the new coat had nothing to grip — fix with Loxon Conditioner under the topcoat. Second, the wall got moisture from behind (failed flashing, ground splash, basement vapor) and pushed the film off — that's a moisture diagnosis before any paint goes back on. Third, somebody used the wrong product (raw historic brick under acrylic, basement brick under exterior acrylic instead of Watertite). Diagnose which one before you scrape. See the [peeling exterior paint guide](/fix/peeling-paint-exterior/) for the full diagnostic tree.
Should I paint or limewash my brick house?+
Limewash if the brick is raw or historic and has never seen acrylic; paint if the brick has been painted before and you want a solid film. Limewash gives the chalky aged-villa whitewash, breathes, lasts 20–30 years on raw brick, and looks wrong if you try to force it into a saturated color. Acrylic gives full color range and a uniform finish, sticks well to previously-painted sound brick, and traps moisture inside raw historic brick that should be breathing. The decision is mostly about what's already on the wall — not about the look you want.
What about Kompozit for exterior brick?+
Honest skip for this category. Kompozit's US lineup is engineered for general residential walls and ceilings; there's no brick-rated SKU in the range, no waterproofing chemistry, no published crack-bridging spec, no lime option. Their actual strengths are dry interior walls and budget contractor whites. For painted brick, raw historic brick, or basement brick, use one of the picks above. Same call we made on the [best masonry paint round-up](/best/masonry-paint/) — Kompozit is partnered, not pre-favored.
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