
New York City. A symphony of steel and glass, a relentless tide of humanity, and an energy that pulsates through every avenue and alleyway. Yet, amidst this modern spectacle, a different kind of architectural marvel endures: the brownstone.
These row houses, clad in their namesake reddish-brown sandstone, are more than just buildings; they are the very fabric of classic New York neighborhoods. With over 217,000 row homes gracing the city’s streets, of which approximately 12% are estimated to be brownstones, these architectural gems represent a significant portion of New York City’s historical identity. Walking through Brooklyn Heights, Park Slope, or Harlem, one is transported back in time, imagining the families raised, the stories whispered, and the lives lived within those walls.
But these beloved landmarks, symbols of a bygone era, are facing a silent threat. A threat that, if left unchecked, could erode their beauty and compromise their structural integrity.
The Fragile Beauty of Brownstone
While brownstone evokes images of solidity and permanence, the truth is that this type of sandstone is surprisingly delicate. Unlike its more robust cousin, limestone, brownstone is porous and susceptible to the ravages of moisture. Decades of well-intentioned but ultimately harmful maintenance practices have exacerbated this vulnerability.
The culprit? Non-breathable paints, like latex, that create an impermeable barrier on the brownstone’s surface. Moisture from rain, snow, and even humidity becomes trapped beneath this layer, unable to escape. As temperatures fluctuate, this trapped moisture expands and contracts, generating pressure that leads to cracking, spalling, and ultimately, the decay of these architectural gems.
A Call for Breathable Solutions
The good news is that there’s a growing awareness of this issue, and a movement to preserve these historic structures is gaining momentum. Homeowners, architects, and preservationists are recognizing the importance of using breathable materials that allow brownstone to “breathe.”
Enter mineral-based paints, a revolutionary solution that is transforming the way we approach brownstone preservation. Unlike conventional paints, mineral paints are vapor-permeable, allowing moisture to escape naturally while still providing a durable and beautiful finish.
Keim Mineral Coatings: A Legacy of Preservation
Leading the charge in mineral paint technology is Keim Mineral Coatings, a company with over 140 years of experience in developing and manufacturing high-performance mineral-based paints. Keim’s paints are specifically formulated to bond with the mineral structure of brownstone, creating a symbiotic relationship that protects the stone while allowing it to breathe.
Why Brownstone Needs Keim:
- Unmatched Breathability: Keim paints allow moisture to escape, preventing damage and ensuring the longevity of the brownstone.
- Exceptional Durability: Keim’s mineral paints form a silicate bond with the stone, creating a highly resistant finish that withstands the test of time and the harsh realities of New York City’s climate.
- Authentic Beauty: Keim paints enhance the natural beauty of brownstone with a unique, matte finish that complements its historic character, available in a wide array of colors to suit any aesthetic.
- Environmentally Friendly: Keim paints are free of harmful VOCs and toxins, making them a healthy choice for both homeowners and the environment.


More Than Just a Paint Job
Choosing Keim for your brownstone is more than just a cosmetic decision; it’s an investment in the preservation of New York City’s architectural heritage. By using breathable paints, homeowners are ensuring that these iconic structures will continue to grace our streetscapes for generations to come.
Preserving Our Heritage
The brownstones of New York City are an irreplaceable part of our architectural heritage. By choosing breathable paints like Keim, homeowners are not only protecting their investment but also playing a vital role in preserving these historic treasures for generations to come.


Check out these links for more info on NYC Brownstones:
Brownstones: New York’s Living History
New York City Brownstones – An Architectural History
New York City Brownstones Maintain Their 150-Year-Old Mystique