Brownstone gives NYC its iconic streetscapes — but as a soft sandstone, it deteriorates in the city's freeze-thaw climate. Cast stone restores brownstone facades with matched, durable replacements for the elements that fail first.
Why brownstone fails
Brownstone is a sandstone that readily absorbs water. When that water freezes and expands, the surface flakes and spalls — a process called "sugaring." Stoops, window sills, lintels, door surrounds, and cornices, all heavily exposed, are usually the first to go.
What cast stone can restore
- Stoop treads, risers, and cheek walls
- Window sills and lintels
- Door surrounds and entry details
- Cornices and belt courses
- Coping and parapet details
Matching the brownstone look
Cast stone is color-matched to the deep, warm tones of brownstone and cast to the original profiles, so a restored stoop or sill blends with the surrounding facade. See our guide on matching cast stone to historic masonry.
A more durable repair
Because cast stone is dense and low-permeability, a cast stone repair typically outlasts the original soft brownstone — meaning fewer repeat repairs and better performance through future Local Law 11 cycles.
Restore your brownstone
Mohan's Precast restores brownstone facades across Brooklyn, Manhattan, and beyond. Request a quote with your drawings or photos.
