Complete Foundation and Waterproofing Solutions for New England Homes
New England’s most trusted waterproofing and foundation specialists since 1972. We handle everything from minor crack repairs to complete foundation restoration—with the same commitment to quality workmanship and direct service.
Permanent solutions that keep New England basements dry — no matter the season.
A wet basement isn’t just an inconvenience — it’s a threat to your home’s structure, air quality, and value. Keller diagnoses the source of your moisture problem and installs a proven waterproofing system built to handle New England’s harshest conditions, year after year.
Cracks, bowing walls, and settling foundations — caught early and corrected for good.
Your foundation is your home’s most critical structural element, and warning signs like cracks, shifting, and water intrusion only get worse over time. Keller’s foundation repair solutions stabilize, seal, and restore your foundation before small problems become costly disasters.
Protecting New England commercial properties from water damage since 1972.
Water intrusion in a commercial property means disrupted operations, liability exposure, and costly repairs. Keller Waterproofing brings the same proven expertise we’ve delivered to thousands of homeowners to commercial buildings, multi-family properties, and mixed-use developments across New England.
Foundation cracks don't fix themselves — Keller seals them before they become serious.
A crack in your foundation wall is never just cosmetic. Left untreated, even hairline cracks allow water, moisture, and cold air to work their way in — widening the problem season after season. Keller identifies the type and cause of every crack and applies the right repair method to seal it permanently.
Stop water at the source — before it ever reaches your foundation.
Most basement water problems start outside. Poor yard grading, inadequate drainage, and overwhelmed downspouts push water directly toward your home. Keller’s exterior drainage solutions — including grade corrections, swale construction, and below-ground drywell installation — redirect that water safely away from your property for good.
When your foundation needs more than a repair — it needs to be stabilized.
Settling, sinking, and shifting foundations require more than a surface fix. Keller installs piers and footers that reach stable soil beneath your home, stopping movement and restoring structural integrity from the ground up — protecting your investment for decades to come.
Crumbling mortar and deteriorating masonry are warning signs your foundation can't afford to ignore.
New England’s freeze-thaw cycles are brutal on masonry — and what starts as minor deterioration can quickly compromise your foundation’s ability to keep water out. Keller’s masonry repair services restore crumbling joints, spalling surfaces, and damaged block or stone to protect the structural integrity of your home for years to come.
Secure, weather-tight basement access and energy-efficient windows — installed right the first time.
Your bulkhead door and basement windows are two of the most overlooked entry points for water, drafts, and pests. Keller installs durable, weather-resistant bulkhead doors and double pane Low-E vinyl windows that seal out the elements, meet code requirements, and stand up to everything New England weather throws at them.
Properly managed gutters are your home's first line of defense against foundation water damage.
When gutters clog, sag, or discharge directly against your foundation, they turn every rainstorm into a threat. Keller ensures your gutter and downspout system is directing water safely away from your home — reducing hydrostatic pressure, preventing erosion, and protecting your foundation from one of its most common and preventable enemies.