
Interior Waterproofing
If your basement is wet, Atlantic Waterproofing is here to help. Our top-notch perimeter drain system uses a dual drain system underneath your basement slab to keep water managed for good.
Interior Waterproofing Solutions
Complete waterproofing services to keep your lower level dry, healthy, and usable.
Interior/exterior french drains
Perimeter drain systems that capture and redirect water before it enters your basement.
Sump pump installation
Reliable sump basins and pumps to remove collected water and keep your space dry.
Crawl space encapsulation
Vapor barriers and sealing to protect crawl spaces from moisture and pests.
Drainage board
Rigid boards that channel water down to the drain system and relieve wall pressure.
Foundation crack repair
Permanent repairs for cracks that let water seep into your foundation.
How our dual drain system works
We don't sell gimmicks. We install a real, engineered perimeter drain system designed for lasting results.
Remove the concrete floor
We start by jackhammering and removing the concrete floor near the foundation wall.
Install the deep drain
We install two drains: one 4″ pipe deep beneath the slab, surrounded by clean crushed stone.
Add drainage board
Then a drainage board on top that runs minimum 4-6″ up the wall.
Pump water away
The drain pipe is pitched, which delivers water to a sump basin, where it's pumped out far away from the house.
This reduces the hydrostatic water pressure that occurs from water building up around and under your foundation. The dual system is hands-down the most effective way to protect your basement. The result is a clean, dry, healthy space!
Oh and… don't fall for the "gutter" systems that some of the big waterproofing companies sell!

Crawl space encapsulation
A dirt or vented crawl space pulls damp air, soil gas, and odors straight into the rooms above it. We seal the space with a heavy reinforced vapor barrier over the ground and up the walls, tape and mechanically fasten the seams, and tie the space into drainage and a sump pump when groundwater is present. Where humidity stays high, we add a dedicated dehumidifier so the space stays in a safe moisture range year round.
- Reinforced vapor barrier on floor and walls
- Sealed vents and rim joist air sealing
- Drainage and sump pump where water collects
- Dehumidification and humidity monitoring
- Insulation replacement when moisture damaged
- Cleaner air and warmer floors upstairs
Foundation crack repair
Most poured concrete foundations crack at some point, usually from normal shrinkage and settlement. A crack that leaks during heavy rain can be repaired permanently from the inside without excavating the yard. We inject the full depth of the crack with expanding polyurethane or structural epoxy so the repair seals the wall rather than just covering the surface.
- Polyurethane injection for actively leaking cracks
- Structural epoxy where strength must be restored
- Full-depth seal, not a surface patch
- Carbon fiber straps for bowing or shifting walls
- Cove joint and tie rod hole sealing
- Most repairs finished in a single visit
Why homeowners trust Atlantic Waterproofing
We treat every project like it's our own home.
Let's Get You Scheduled
Only takes 1 minute. Jeff or Dave will contact you!
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We service Massachusetts and beyond!
