Houses of that period were usually set on stone or early brick foundations laid with soft lime mortar, often with a shallow cellar rather than a full height basement. Nobody installed footing drains or exterior membranes then. Water was expected to seep in during wet spells and dry out again. Over 150 years the mortar washes out of the joints, the floor may be thin concrete poured over dirt decades after the house was built, and the cellar can turn damp and musty every spring. Fixing that starts with understanding the wall, not with a generic coating.
Many Little Dublin buildings are one and two family homes on narrow lots, with the house close to the sidewalk and a neighbor a few feet away. That limits exterior digging, so most repairs happen from inside: repointing open joints with a compatible mortar, a perimeter drain at the base of the wall, and a channel or membrane that guides seepage down into it. Rigid modern cement mortar and heavy sealers can trap moisture in old stone, so ask how the contractor will handle the masonry. In a two family house, ask how the schedule will affect both units.
Because the neighborhood is inside the Morristown Historic District, exterior changes that touch steps, areaways, or visible walls can draw review, so check with the town before anything outside is altered. Simple fixes still go a long way here. Downspouts that empty right at the foundation, a concrete walk that slopes toward the house, and old basement window wells without covers send a surprising amount of water into these cellars. A contractor who regrades a side strip and extends the leaders may solve much of the problem for little money before any drain work is needed.
Worth knowing in Little Dublin
The Little Dublin addition to the Morristown Historic District extends east from Madison Street to James Street between South and Green Street.
npgallery.nps.govThe addition holds 86 structures, described as modest frame one and two family dwellings dating from about 1850 to 1890.
npgallery.nps.govAbout 23% of Morristown homes were built in 1939 or earlier.
api.censusreporter.org
Questions from Little Dublin homeowners
Should I seal my Little Dublin stone cellar with a waterproof paint?
Usually not as a first step. Heavy coatings on old stone and lime mortar can trap moisture in the wall and peel. Repointing, better drainage outside, and an interior drain at the base of the wall tend to work better on these foundations.
My cellar is only six feet tall. Can it still get a drain system?
Often yes. A perimeter drain sits in the floor along the walls, so headroom matters less than the condition of the slab and footing. The contractor should open a test spot to see what the floor is made of before giving a firm price.