Lime Wash for Stucco, Brick and Interior Walls

A mineral finish that becomes part of the wall

Authentic lime wash is made from slaked lime (calcium hydroxide) suspended in water, often with natural mineral pigments. Meoded’s Lime Wash is a slaked-limestone mineral paint, brushed on in two coats.

Unlike acrylic or latex paint, which dries into a plastic film sitting on top of the wall, lime wash cures through a process called carbonation: the lime reacts with carbon dioxide in the air and slowly converts back into solid calcium carbonate, the same material as limestone. On porous mineral surfaces it effectively becomes part of the wall.

• Slaked-lime mineral coating, not a resin film
• Cures by carbonation (CO2 to calcium carbonate)
• Brushed on in two coats, crisscross

A soft, cloudy matte

Lime wash reads as a velvety, matte surface with gentle mottling and tonal variation no flat paint can reproduce. Brushed on in a cross-hatch pattern, it builds subtle depth and movement, and as it carbonates it blooms into a softly weathered patina.

Lime wash is meant to age. It shifts with the daylight and matures into the character of Old-World European plaster, which is why it is chosen for fireplaces, feature walls and stucco facades.

A finish that breathes

Because it is mineral and porous rather than a sealed film, lime wash is fully vapor-permeable. Walls can release moisture instead of trapping it, which is why lime finishes are trusted on historic masonry and breathable wall assemblies.

Its naturally high alkalinity (high pH) makes it resistant to mold and mildew without added biocides, and the cured mineral surface is naturally UV-resistant, so color holds rather than fading. On porous brick, stone, and stucco the bond can last for many years and will not chip, peel, or flake the way a film coating can.

• Vapor-permeable: walls breathe, moisture escapes
• High-pH surface naturally resists mold and mildew
• UV-resistant; won’t peel or flake on masonry

Where it grips, and why the base coat matters

Lime wash works best on porous, unsealed mineral surfaces: raw brick, stone, stucco, masonry, and lime or clay plaster. On those, you dampen the surface lightly with clean water and apply; outside, Meoded thins the first coat about 10% with water.

Drywall and previously painted walls are not porous in the same way, so the wash has nothing to soak into. That is what Meoded Lime Wash Base Coat is for: two coats of this acrylic primer give the wash a surface made to absorb it, so it develops its finish correctly. Glossy paint gets sanded and a multi-purpose primer before the Base Coat. Skipping the Base Coat on drywall is the most common reason a lime wash project disappoints.

• Raw brick, stone, stucco, masonry: dampen and apply
• Drywall or painted walls: two coats of Lime Wash Base Coat first
• Glossy paint: sand and prime, then Base Coat
• Two coats typical, brushed crisscross

Fireplace walls and stucco facades

Indoors, lime wash suits living-room and bedroom walls, fireplaces, and ceilings. It holds up well in low-to-moderate-traffic areas and is best kept away from spots that get scrubbed.

Outdoors, lime wash is a natural fit for stucco, brick, and stone facades, exactly the surfaces that define homes across the Valley. Meoded seals exterior lime wash with two to three coats of Stain Shield after 48 to 72 hours, and it should be kept out of rain for seven days while it cures. In Arizona the bigger constraint is heat: Meoded says not above 85°F and not in direct sun.