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
 » Concrete 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
 » Carbon Fibre Crack Repair
 » Bowed Wall Repair
 » Foundation Underpinning

BBB - Better Business Bureau!

Window Well Installation and RepairWindow Well Install & Repair
Protect Your Windows from Water Damage:

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:

1) Excavation of Window Well:
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

2) Weeping Tile Flush Test:
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!

3) Liquid Rubber is Applied:
Then liquid rubber is applied to the wall which seals every inch of the foundation wall. This is your second line of defense and the job now meets code.

4) Dimpled Sheet Air-Gap Membrane:
But we like redundancy, so we also apply a dimpled sheet air-gap membrane which not only provides you with a third line of defense, but also creates a hydrostatic pressure relief which is how water forces its way through your foundation wall in the first place.

5) PVC Drainout Installed:
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 height of the window sill

6) Window Well Installed:
Window well is then installed in the appropriate position and fastened to the wall with concrete screws to make sure the window well never moves out of place.

7) Backfill Added to the Dig:
Excavation is backfilled with native soil, but not filled right to the top to allow drainage. Extra backfill is removed and disposed of by Basement Technologies.

8) Drainage Gravel is Poured:
Gravel is poured inside the window well to facilitate drainage into the newly installed drain pipe. This allows any water to freely enter the drain pipe and keep from remaining still within the window well.


  • Interior finishing's 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


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