Basement Waterproofing - Interior
Interior Waterproofing and Sump Pump Installation in Hamilton
A Hamilton homeowner was dealing with damp patches along the floor–wall joint, musty odours, and an aging pump that couldn’t keep up after heavy rain. Our team recommended an interior drainage upgrade paired with a new, high-capacity sump system to keep the basement reliably dry.
Key Challenges
- Hydrostatic pressure forcing water through the perimeter joint
- Blocked interior drain tiles
- Outdated pedestal pump with inconsistent start/stop cycles
Scope of Work
- Interior perimeter trench and drainage channel
- New sump pit at the lowest point of the slab
- Submersible sump pump with float switch + battery backup
- Wall membrane along lower courses to guide moisture to the channel
- Polyurethane seal at the floor–wall joint
- New discharge line routed well away from the foundation
- Concrete restoration and clean finish
Step-by-Step
- Assessment & Prep — Removed baseboards, scanned the perimeter, and marked low points. Cut a neat trench along interior walls to expose the footing and remove clogged tiles.
- Drainage Channel — Laid a sloped perforated pipe wrapped in non-woven filter fabric, surrounded with clean gravel for free flow to the pit.
- Sump System — Installed a submersible pump with an automatic float switch and check valve. Added a battery backup for storm-related outages common in Hamilton.
- Wall Protection — Applied a durable membrane to the lower wall area to direct any seepage into the channel; sealed the joint with flexible polyurethane.
- Finish — Restored the trench with fresh concrete and tidied the workspace for a ready-to-use area.
Results
A controlled water test confirmed rapid collection and discharge with no seepage along walls or joints. Humidity dropped, odours cleared, and the homeowner regained full use of the basement—ready for storage, a home gym, or future finishing.
Project Details
Location: Hamilton, ON
Service: Interior waterproofing + sump pump install
Duration: 2 days (including curing and finish work)
Outcome: Dry, odour-free basement and dependable drainage path
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