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Holdfast Basement Waterproofing

Basement waterproofing & foundation services

Waterproofing, foundation repair, crawl spaces and moisture control. Each page explains the signs, what the waterproofing contractor does, how long it takes and what drives the price.

Start with what you're seeing

Find the symptom, read the guide if you want to understand it first, or go straight to the service. Urgent problems list the one thing to do before you call.

ProblemWhat it looks likeGuideService
Sump pump stopped and water is risingUrgentWater in the pit near the top, pump silent or humming, water on the floor.First: Check the outlet and breaker, lift the float gently; keep clear of standing water near outlets.Sump Pump Failed? What to Do Right NowEmergency Sump Pump & Flooded Basement Service
Water at the floor-wall jointA wet line along the base of the wall after rain.Why Basements Leak at the Floor-Wall JointInterior Drainage Systems
Water coming up through the floorWater through floor cracks or around the floor drain.Water Coming Up Through the Basement Floor: Causes and FixesInterior Drainage Systems
Leaks after heavy rainSeepage that appears only during or after storms.Basement Leaks Only After Heavy Rain? Here's WhyYard Drainage, Grading & Downspouts
Horizontal crack or bowing wallA crack running across a block wall, wall leaning in.Horizontal Crack in a Basement Wall: What It MeansBowing Basement Wall Repair
Leaking wall crackA vertical or diagonal crack that weeps water.Cosmetic vs. Structural Foundation CracksLeaking Wall Crack Repair
Old stone foundation crumblingLoose mortar, sand on the floor, seepage through stone.Old Sandstone and Stone Foundations in the Mahoning ValleySandstone & Stone Foundation Repair
White powder on wallsChalky white deposits on block or concrete.White Powder on Basement Walls (Efflorescence)Basement Waterproofing
Musty smell, damp airOdor, condensation on pipes, humidity above 60%.Why Does My Basement Smell Musty?Basement Dehumidifiers
Wet or smelly crawl spaceStanding water, wet insulation, musty odor upstairs.Is Crawl Space Encapsulation Worth It?Crawl Space Encapsulation
Buying a house with a damp basementStains, fresh paint on walls, a dehumidifier running in the listing photos.Should You Buy a House With a Wet Basement?Basement Waterproofing

What does basement waterproofing include?

Interior drainage, exterior waterproofing, sump pumps, leaking cracks and yard drainage.

Unfinished basement with concrete block walls

Basement Waterproofing

Basement waterproofing stops water from entering a basement and removes water that collects around the foundation.

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Block-wall basement where a perimeter drain would run

Interior Drainage Systems

An interior drainage system (interior drain tile or French drain) is a perforated pipe installed in a trench along the inside perimeter of the basement floor.

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Stone foundation wall exposed outside a house

Exterior Foundation Waterproofing

Exterior waterproofing excavates soil down to the footing, cleans and repairs the wall, applies a waterproof membrane and drainage board, and installs new footer drains before backfilling.

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Unfinished basement with utilities

Sump Pump Installation & Repair

Sump pump service installs a sealed pit and pump where groundwater collects, replaces failed pumps and switches, adds battery or water-powered backups, and routes the discharge line well away from the house so it doesn't freeze or recirculate..

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Basement utility area with sump pit and water heater

Emergency Sump Pump & Flooded Basement Service

Emergency sump pump service gets water moving out of a flooding basement: replacing a failed pump or float switch, clearing a frozen or clogged discharge line, and adding a backup so the next storm or outage doesn't repeat it.

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Crack in a wall

Leaking Wall Crack Repair

Leaking crack repair seals non-structural cracks in poured concrete walls, usually by injecting flexible polyurethane that expands to fill the crack through the wall's full thickness.

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Downspout emptying beside a stone foundation

Yard Drainage, Grading & Downspouts

Yard drainage keeps rain and snowmelt away from the foundation: extending or burying downspouts, regrading soil to slope away from the house, and installing French drains or catch basins where water pools.

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What does foundation repair include?

Bowing walls, structural cracks, old sandstone foundations and settlement.

What does crawl spaces include?

Encapsulation and drainage for damp, musty crawl spaces.

What does moisture control include?

Dehumidifiers, mold prevention and leaking window wells.

Not sure which applies? Describe what happened and we'll route it.

Where are these services available?

Each town page covers the local housing, seasonal risks and the most common calls there.

Somewhere else? Check coverage near you.

Not sure what the problem is?

Call and describe it. A licensed waterproofing contractor will diagnose it and give you the price before any work starts.

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