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A wet basement is almost never a basement problem. It is a water management problem that ends up in your basement. In New Jersey, that usually starts outside the house, where dense clay soil holds water against the foundation instead of letting it drain away. After heavy rain, that saturated soil creates hydrostatic pressure, and water under pressure will find any weakness it can, whether that is a hairline crack in a poured wall, a failed mortar joint in a block foundation, the cove joint where the wall meets the floor, or an old window well with nowhere to drain. Once it is inside, you get damp air, musty odor, efflorescence on the walls, ruined storage, and eventually mold and rot in framing and finished space.
A+ Chimney & Masonry provides basement waterproofing, crack and leak repair, drainage systems, sump pump installation, parging and structural masonry repair for homeowners across New Jersey. We work on everything from stone and brick foundations in older Jersey City and Hoboken row homes to poured concrete and block basements in Edison, Clifton and Paterson. Every job starts by identifying where the water is actually entering, because sealing a wall that is leaking at the footing solves nothing and wastes your money.
From a single crack injection to a full perimeter drainage system, we handle every level of basement work with the same attention to detail.
Basement Waterproofing
Interior and exterior waterproofing tailored to how your basement is actually taking on water. Exterior excavation and membrane work stops water at the wall, while interior systems manage what gets through. We recommend based on your foundation type, not on what is easiest for us.
Foundation Crack Repair
Poured concrete cracks get sealed with polyurethane or epoxy injection that fills the crack through the full wall thickness rather than just skinning the surface. Block and stone walls are repaired with proper masonry methods, since injection does not work on hollow units.
Interior Drainage Systems
Perimeter drain tile installed along the footing to collect water before it reaches your floor and route it to a sump. This is the most reliable fix for basements taking water in through the cove joint where wall meets floor.
Exterior Drainage and Grading
Downspout extensions, French drains, window well drains and regrading around the foundation. A surprising number of wet basements dry out permanently once water is simply moved away from the house.
Sump Pump Installation and Replacement
Properly sized sump pumps with sealed basins, check valves and correct discharge routing. We recommend a battery backup for any New Jersey home, because the storms that flood your basement are the same storms that knock out power.
Basement Wall Repair and Parging
Repointing deteriorated mortar joints, rebuilding damaged block or stone sections and parge coating walls to create a smooth, sealed, moisture resistant surface that holds up against constant ground contact.
Bowing and Bulging Wall Repair
Walls pushing inward under soil pressure need structural reinforcement, not sealant. We stabilize with carbon fiber straps, steel beams or rebuilt sections depending on the degree of movement.
Efflorescence and Moisture Control
Treating the white mineral deposits, damp air and musty odor that come with persistent moisture, including vapor barriers and ventilation improvements so the space stays usable and dry.
Egress Windows and Window Well Repair
Rebuilt and properly drained window wells, plus egress window installation for basements being finished or converted to living space, meeting code and letting light in without letting water in.
Some basement problems announce themselves with standing water. Most start much quieter than that. Watch for:
Horizontal cracking and any inward bowing deserve immediate attention. Those are pressure and structural signals rather than simple moisture, and they progress steadily once they start.
We inspect the basement inside and out, including grading, downspouts, window wells and the foundation itself, to find where water is actually entering and why. Guessing at the entry point is the single most common reason basement repairs fail.
You get a clear, itemized written estimate covering the recommended solution, materials, timeline and pricing. If your problem is a clogged downspout and bad grading, we will tell you that instead of selling you a drainage system.
Our crew completes the work with the right materials for your foundation type, protecting your finished space, stored belongings and landscaping throughout the job, and keeping the site clean while we work.
We test the system, confirm proper drainage and discharge, then walk you through everything that was done and how to maintain it, so you know your basement will hold through the next storm.
New Jersey basements deal with clay soil, a high water table in many areas, heavy coastal storms and constant freeze and thaw movement at the frost line. We use materials rated for that environment:
Materials are selected based on your foundation type, water table and the actual source of intrusion, never by default.
Why Quality Basement Waterproofing Matters
✅ Protects your foundation. Water in contact with the foundation year round erodes mortar, corrodes reinforcement and accelerates structural damage from the bottom up.
✅ Prevents mold and improves air quality. Basement humidity rises into the rest of the house, so a dry basement means healthier air on every floor.
✅ Reclaims usable square footage. A dry, sealed basement becomes storage, a workshop, a gym or finished living space instead of a room nobody goes into.
✅ Protects what you keep down there. Furnaces, water heaters, electrical panels, laundry and stored belongings all sit in the path of the water.
✅ Increases property value. A documented waterproofing system is a strong asset at resale, and a wet basement is one of the first things a home inspector flags.
✅ Prevents far costlier repairs. Sealing a crack early is inexpensive. The same wall, left alone, becomes structural reinforcement, rot repair and mold remediation.
