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Basement Waterproofing in Meridian, ID (83642) · Local Professionals

Boise Waterproofing · Fast response in Meridian and the Boise area · Free estimate 24h

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Meridian's subdivisions tell a story: most of the housing stock went up between the 1990s and the 2020s, and a lot of it is slab-on-grade with no basement at all. But the homes that do have full basements, especially the ones near the canals and older irrigation laterals, take on water every spring when the water table climbs.

Boise Waterproofing is based in Boise and works Meridian and ZIP 83642 regularly. When a homeowner near Storey Park or out by The Village at Meridian finds dampness along the base of a poured wall or a sump pit that runs nonstop in June, we're the crew they call.

Waterproofing Us in Meridian (83642)

Meridian sits on alluvial sand, gravel, and silt, with cemented caliche layers that can perch water above the regional water table. That matters because the Treasure Valley's irrigation season raises the water table fast, and canals like the New York Canal and the Ridenbaugh laterals recharge the ground under entire neighborhoods. In the 1990s to 2020s subdivisions, we see two patterns. On slab-on-grade homes, the issue is usually a window well that fills during a cloudburst or a foundation crack that weeps after snowmelt. On the full-basement homes, hydrostatic pressure pushes water through cold joints and tie holes, and the fix is often an interior perimeter drain tied to a sump basin rather than a full exterior dig. Tight side yards and mature landscaping mean we plan access carefully before we mobilize.

Our team has worked Meridian's soil and grade long enough to know when simple crack sealing is the honest answer and when the real problem is pressure that needs a drain tile system. We're fully insured with general liability and workers' compensation.

Our services in Meridian

How a Job Works in Meridian

Step 1: Call (208) 314-5276 and we set up a free basement inspection. We walk the interior, check the wall base, the sump pit, the window wells, and the exterior grade, and we tell you plainly what we see and what it will take.

Step 2: We schedule the work around Meridian's permit timing and any HOA rules. If an egress window cut or a structural repair needs a permit, we point you to the local building department and wait for the green light. On tight lots off Meridian Road or near the freeway interchanges, we stage materials in the driveway and keep the excavation footprint small.

Step 3: We clean up, haul out debris, and walk the job with you. We test the sump pump and check valve, confirm the discharge line runs clear, and leave your property clean.

Pricing in Meridian depends on size, access, condition, and urgency. Foundation crack repair starts at $450, sump pump installation and replacement at $1,200, and battery backup sump pumps at $900. Interior drain tile runs from $50 per linear foot, French drains from $25 per linear foot, and exterior basement waterproofing from $95 per linear foot. Basement waterproofing starts at $2,500, foundation waterproofing at $3,500, and basement wall sealing at $1,500. Window well drainage and repair starts at $650, and mold remediation starts at $1,500. Call (208) 314-5276 for a free estimate.

My basement in the 83642 area near the New York Canal gets damp every June. Is that normal?
It's common, but it isn't something to ignore. During irrigation season the water table rises and hydrostatic pressure pushes water through cold joints and hairline cracks. We check whether the dampness is a crack issue or a pressure issue, because the fix is different. Often an interior perimeter drain and a properly sized sump basin solve it without exterior excavation.
What do I do if water is actively coming into my Meridian basement after a storm?
Call us at (208) 314-5276. Move stored items off the floor, don't run electrical equipment in standing water, and if the sump pump is running continuously, check that the discharge line isn't frozen or blocked. We respond to storm and snowmelt emergencies in Meridian and can assess whether a crack is actively weeping or a wall is bowing.
What's a realistic ballpark for crack repair versus a full drain tile system in Meridian?
Crack repair with epoxy or polyurethane injection starts at $450 and is usually enough for a single stable crack. If water is coming through multiple points along the wall base, an interior drain tile system starts at $50 per linear foot and may be the better answer. The free inspection tells us which one you actually need.
Do I need a permit from the City of Meridian for basement waterproofing or an egress window?
Permits are commonly required for structural foundation repair, egress window cutting, and work that alters drainage or the sanitary connection of a sump discharge. Thresholds vary, so we always defer to the City of Meridian building department to confirm what applies to your address before we start.
My HOA in Meridian has rules about exterior changes. How do you handle that?
We coordinate with your HOA before mobilizing, especially for exterior waterproofing, French drains, and window well work that changes what's visible from the street. On property-line questions, we keep the work within your lot and recommend a boundary survey if there's any doubt about where the line sits.
Are you insured for work at my Meridian property?
Yes. Boise Waterproofing is fully insured with general liability and workers' compensation coverage, and we're happy to provide proof before we start.
What maintenance should Meridian homeowners do before irrigation season?
Test the sump pump and check valve in April, extend downspouts away from the foundation, and clear window wells of debris. If you see efflorescence or a new crack after the first irrigation cycle, call (208) 314-5276 for a free inspection before it worsens.
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Our services

Our Basement Waterproofing Services in Boise

All your work handled by qualified professionals in Boise

Basement Waterproofing

We diagnose the actual water path first, then build the system that matches it.

Included in your service

  • Water path traced: hydrostatic pressure, wall seepage, or floor cracks
  • Interior drain tile, sump basin, wall treatment, and vapor barrier as needed
  • Honest call on what you need and what you do not
  • Transferable warranty on the system, terms set out in your written contract
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Interior Drain Tile System

Perimeter drain tile at the footing, routed to a sump basin. Installed in any season.

Included in your service

  • Slab edge opened, perforated pipe laid in washed stone at the footing
  • Water captured before it reaches the floor, channeled to the sump basin
  • Works through winter, unlike exterior excavation
  • Concrete restored flush, basement left clean and usable
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Exterior Basement Waterproofing

The most thorough fix there is: excavation to the footing, membrane, and new drains.

Included in your service

  • Excavation to the footing, foundation wall cleaned and repaired
  • Waterproof membrane and dimple board applied to the outside face
  • New footing drains bedded in stone and wrapped in filter fabric
  • Straight guidance on when exterior work earns its cost over an interior system
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Foundation Waterproofing

Block, poured, and fieldstone foundations, each treated for how it actually fails.

Included in your service

  • Parging and crack repair matched to the wall construction
  • Membrane or crystalline treatment selected for the substrate
  • Drainage corrected so the treatment is not asked to hold back standing water
  • Period-appropriate approach for pre-1940 stone and block walls
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Foundation Crack Repair

Epoxy bonds a structural crack, polyurethane seals a wet and moving one. We use the right one.

Included in your service

  • Crack graded first: cosmetic, actively weeping, or still moving
  • Injection ports set along the full depth of the crack
  • Epoxy injection where the wall needs structural bonding
  • Polyurethane injection where the crack is wet and needs to stay flexible
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Sump Pump Installation & Replacement

A pump is only as good as the basin, the check valve, and where the water actually goes.

Included in your service

  • Zoeller and Liberty pumps sized to your pit and inflow
  • Sealed basin and check valve to stop backflow between cycles
  • Discharge line routed and freeze-protected for spring snowmelt
  • Old pump and debris removed, cycle tested before we leave
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Bowing Wall Repair

Stop the movement without rebuilding the wall, in most cases.

Included in your service

  • Bow measured and monitored to establish how far the wall has moved
  • Carbon fiber straps bonded to the wall for lighter bows
  • Steel wall anchors where the bow needs active correction
  • The clay soil pressure driving it addressed, not just the wall braced
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French Drain Installation

Intercept surface and groundwater before it ever reaches the foundation.

Included in your service

  • Trench graded to fall, gravel bed and perforated pipe wrapped in filter fabric
  • Curtain drains placed uphill of the house where the water actually arrives
  • Outlet tied to daylight or to a pump basin, never left to pond
  • Grading and downspout extensions corrected as part of the job
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Drain Tile Repair & Replacement

Many homes here still run on original clay tile that stopped draining decades ago.

Included in your service

  • Camera inspection to locate the collapse, blockage, or root intrusion
  • Targeted excavation rather than replacing the entire run
  • Modern PVC replacement bedded in washed stone
  • Flow tested end to end once the line is reconnected
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Vapor Barrier Installation

Stop moisture migrating through block and concrete before you finish the space.

Included in your service

  • Heavy-duty wall and floor barrier sealed at seams and penetrations
  • Fitted around the drainage system so moisture is managed, not trapped behind it
  • The right prep step before framing a basement finish
  • Paired with drainage, because a barrier alone does not remove water
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Basement Wall Sealing

Sealers fix minor dampness. They do not beat hydrostatic pressure, and we will tell you which you have.

Included in your service

  • Surface prepared and efflorescence removed down to sound masonry
  • Penetrating or membrane sealer chosen for the wall and the conditions
  • Plain diagnosis of whether sealing is genuinely enough for your basement
  • If the water table is the driver, we say so instead of selling you a coating
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Battery Backup Sump Pumps

The power goes out during the storm, which is exactly when the pump matters most.

Included in your service

  • Backup pump and battery sized to your pit and expected inflow
  • Automatic changeover the moment the primary pump loses power
  • Audible alarm so a failure does not go unnoticed
  • Runtime explained honestly, and maintenance checks available
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Free Basement Inspection

A written assessment with photos, and a straight answer if nothing is actually wrong.

Included in your service

  • Walls, floor, cracks, and sump system checked point by point
  • Exterior grading, downspouts, and window wells reviewed as water sources
  • Photos and a written explanation of what needs fixing now and what can wait
  • Free and no obligation, including when our answer is that you need nothing
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Basement Mold Remediation

Removal paired with the moisture fix, because mold returns wherever the water does.

Included in your service

  • Containment set up before any affected material is disturbed
  • Affected surfaces treated and remediated, damaged materials removed
  • Musty smell traced back to the moisture source rather than masked
  • Drainage or dehumidification added so growth does not restart
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Window Well Drainage & Repair

A well that fills becomes a bucket of water held against your foundation.

Included in your service

  • Well excavated and a drain tied into the footing drain or a stone bed
  • Liner set true and backfilled with free-draining stone
  • Clear cover fitted to keep out rain, leaves, and snow
  • A leak source homeowners rarely suspect and inspections often miss
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Egress Window Installation

Code-compliant egress, cut and flashed so the new space stays dry.

Included in your service

  • Opening cut and framed to the required egress dimensions
  • Window flashed and sealed against the foundation wall
  • Well drained properly so the new opening is not a water entry point
  • Permit requirements confirmed with the local building department first
Learn more→
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