Basement Technologies®
Tel: 905-527-3325
Toll-Free: 1-888-744-4925
Fax: 905-527-6623

36 Albert St, Unit 2
Hamilton, ON, L8M 2X9

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Basement Technologies
 » Contact Us
 » About Us
 » Our Credentials
 » Our Service Area
 » Get A Free Estimate
 » FAQ's

Interior Waterproofing:
 » Interior De-Watering
 » Crack Injection
 » Ecofloor Dampproof Subfloors
 » Sump Pumps / Battery Back-Up
 » Backwater Valve Installation

Exterior Waterproofing:
 » Exterior Waterproofing
 » Window Well Repair

Foundation Repair:
 » Exterior Crack Repair
 » Bowed Wall Repair
 » Foundation Underpinning

BBB - Better Business Bureau!

Window Well Installation and RepairWindow Well Repair
Interior & Exterior:

Window wells, when installed below grade on the exterior of a home, must be drained. In the absence of drainage window wells fill up with water like an aquarium. Since windows are designed to shed water (like a roof shingle) instead of being water proof (like an aquarium), when the window wells fill, the water simply pours through the seals of the windows and into the basement. Drainage can be retrofitted either from the exterior or the interior.

Exterior window well dig:

a. Excavation is performed from the window well, right down to the weeping tile. The weeping tile is located below the level of the basement floor slab on the exterior

b. Weeping tile test is performed to ensure that it is draining. It would be fruitless to install a window well drain pipe down to a weeping tile drain that is non-functional!

c. A 4" rigid PVC drain pipe with drain grate is installed that extends from the top of the weeping tile or gravel drainage layer, to approximately 4" below the hight of the window sill

d. Window well is fastened to the wall with concrete screws

e. Excavation is backfilled with native soil

f. Gravel is poured inside the window well to facilitate drainage into the newly installed drain pipe


  • Interior finishings are not harmed
  • Can be combined with exterior foundation waterproofing


  • If weeping tile fails drainage test, additional work will be necessary to establish a drainage point and this could be costly
  • Some minor landscaping repairs may be necessary following repair
  • Gravel may need to be topped up following settlement

Interior window well drain:

a. Dirt in window well is excavated only to approximately 6" below level of window sill

b. 2" hole is core drilled through the foundation wall through to the exterior into window well. Core hole is drilled approximately 4" down form the level of the window sill for drainage point.

c. A 1.5" ABS or PVC drain pipe is installed through the core hole and is drained inside down to a sump pump

d. Penetration is sealed with hydraulic cement

e. Gravel is poured inside the window well to facilitate drainage into the newly installed drain pipe


  • No landscaping repairs will be necessary following repair
  • Eliminates the uncertainty of weather or not additional work will be necessary for weeping tile
  • This system does not depend on the weeping tile for drainage and ignores a plugged or non-functioning weeping tile altogether
  • Less expensive than exterior
  • Can be easily combined with an interior de-watering system
  • Settlement is not an issue


  • Interior finishings must be removed for the install
  • Must be combined with an interior system, sump pump, or floor drain connect (if allowed)

Please contact us for more details »»

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