Why brownstone deteriorates
Brownstone is a sedimentary sandstone that delaminates when water gets between its layers, especially when stone was face-bedded.
Repair methods
- Restoration mortar patching (composite repair)
- Dutchman repairs with new stone
- Re-anchoring loose pieces
Approvals
Back Bay Architectural Commission and South End Landmark District Commission review visible facade work.
Frequently asked questions
Is new brownstone available?
Limited quarries exist; matching alternatives are often used.
How long does a patch last?
Well-executed patches last 20+ years.
Can brownstone be painted?
It's not recommended — trapped moisture causes more damage.
Get historic masonry restoration near you
- Historic Masonry Restoration in Boston
- Historic Masonry Restoration in Cambridge
- Historic Masonry Restoration in Somerville
- Historic Masonry Restoration in Brookline
- Historic Masonry Restoration in Newton
- Historic Masonry Restoration in Quincy
- Historic Masonry Restoration in Waltham
- Historic Masonry Restoration in Lynn
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- Historic Masonry Restoration in Worcester