FAQ
Frequently Asked Questions
Everything you need to know about limewash — from products and process to pricing and maintenance.
General
Limewash is a natural mineral coating made from slaked limestone (calcium hydroxide). It has been used on buildings for thousands of years — from Roman villas to European farmhouses. Unlike paint, limewash bonds chemically with masonry surfaces. It's breathable, eco-friendly, and creates a luminous, textured finish that ages beautifully over time.
Paint is a synthetic film that sits on the surface of brick — it seals the masonry, trapping moisture inside. Limewash is a mineral coating that bonds INTO the masonry through a chemical process called carbonation. It can't peel, chip, or flake because it becomes part of the surface. It's also breathable (perm rating 300+ vs. 5-10 for paint), so moisture passes through freely instead of causing damage.
Exterior limewash lasts 15-20 years with proper application. Romabio Masonry Flat and Textured come with a 20-year warranty. Interior limewash (Velatura) lasts indefinitely with normal use. Over time, exterior limewash develops a natural patina that most homeowners love — and it can be touched up by applying a fresh coat directly over the existing finish, without stripping.
Yes. Romabio products range from near-zero VOC (Classico at 3.9 g/L) to zero VOC (Velatura, Masonry Textured). They're non-toxic, hypoallergenic, and odorless. Velatura Mineralwash is safe for nurseries, bedrooms, and homes with allergy or asthma sensitivities. For comparison, standard interior paint contains 50-250 g/L of VOCs.
Romabio products are sold at Home Depot and Lowe's for DIY use. Simple projects like a small fireplace surround are approachable. But exterior brick, large fireplaces, and interior walls require artisan technique — controlling dilution ratios, crosshatch brushwork, distressing, and working with the brick's absorption. Professional application ensures consistent results. Most DIY attempts that don't turn out as expected can be redone by a professional.
Exterior Brick
Limewash (Classico) needs raw masonry to bond — it won't adhere over paint. For previously painted brick, you have two options: strip the paint and apply Classico, or use Romabio Masonry Flat with MicroGrip Primer over the existing paint. Masonry Flat gives a mineral finish with a 20-year warranty and doesn't require paint removal.
Late April through mid-October, when temperatures are consistently between 50-88°F with relative humidity below 80%. The best months are May-June and September-October — warm enough for curing but not so hot that the product dries too fast. We don't apply if freezing temperatures are expected within 48 hours.
Yes — and this is one of the biggest advantages over paint. Limewash is breathable, meaning moisture inside the brick can escape freely. Paint traps moisture, and when that moisture freezes during Chicago winters, it expands — cracking the brick face (spalling). Romabio Masonry Flat has a perm rating over 300, compared to 5-10 for typical acrylic paint.
For Classico Limewash: 1 coat gives a translucent, antique wash. 2 coats give fuller coverage. For Masonry Flat/Textured: 2 coats are required for the 20-year warranty. We'll discuss the look you want during the estimate and recommend the right approach.
Classico Limewash: 7 pre-tinted whites and neutrals, plus custom tinting at independent retailers. Masonry Flat/Textured: 15+ pre-tinted colors including dark tones (navy, charcoal, sage), plus unlimited custom colors. We bring color samples to your home during the estimate so you can see them against your brick in natural light.
Fireplaces
Most fireplace projects are completed in a single day — typically 3-5 hours including prep, application, and cleanup. Larger floor-to-ceiling fireplaces or stone surrounds may take a full day.
Wait 7-10 days for wood-burning fireplaces and 48-72 hours for gas fireplaces. The limewash needs time to fully cure and carbonate. After that, it handles fireplace heat without issues.
Yes — limewash works on any natural stone or masonry surface. The result depends on the stone's porosity and texture. Rougher, more porous stone absorbs more limewash for a fuller finish. Smoother stone shows more variation. We can do a test patch during the estimate to show you what it will look like.
Interior Walls
Velatura is Romabio's mineral-based decorative paint designed specifically for interior drywall and painted surfaces. It creates the same luminous, textured look as traditional limewash on masonry — but on standard walls. Zero VOC, toxin-free, and no primer needed.
Velatura works on drywall (new or painted) and most interior surfaces. It's best suited for living rooms, bedrooms, dining rooms, and accent walls. It's a decorative finish — not recommended for high-moisture areas like bathrooms or high-traffic areas that need scrubbing.
Yes. You can paint over Velatura with standard interior paint anytime — no special prep needed. You can also apply a new coat of Velatura in a different color directly over the existing finish.
Pricing
Fireplace: $500-$1,500. Interior accent wall: $800-$2,000. Exterior (average home): $4,000-$12,000. Per square foot (exterior): $4-$8. Every project is different — get a free estimate for exact pricing.
Yes. Estimates are always free with no obligation. We come to your home, assess the project, and provide a detailed written quote usually within 24-48 hours.
Limewash costs slightly more upfront ($4-8/sq ft vs. $3-6 for paint) but lasts 2-3x longer. Over 20 years, you'd repaint 2-3 times ($9-18/sq ft total) vs. one limewash application ($4-8/sq ft). Limewash also protects brick from moisture damage, while paint can cause it. Long-term, limewash is both cheaper and better for your home.
Still Have Questions?
We're happy to answer anything that's not covered here. Call us or request a free estimate — we'll walk you through every detail.