Cozy Basement Waterproofing & Renovation
About this basement waterproofing renovation
This basement waterproofing and renovation project started out as a routine flooring replacement and escalated to a full lower-level overhaul once we discovered mould under the original flooring. The owners had hired us for a quick refresh; the mould finding changed the scope completely. We paused the flooring work to remediate the water and air-quality problem first, then rebuilt the basement around a proper waterproofing system to make sure the same failure would not happen again.
Before, During & After
Full foundation waterproofing behind newly framed walls, levelled concrete sub-floor, waterproof vinyl plank, 7″ step-bevel baseboards, and a fresh paint finish — the basement was rebuilt from the foundation out after mould was found under the original flooring.
Gallery
These photos document the basement waterproofing renovation in sequence — mould remediation and wall demolition, foundation trench excavation and waterproofing membrane install, levelled sub-floor, vinyl plank floor, and the finished living space.
Renovation highlights
Our team safely removed the mouldy materials, dried the affected areas, and demolished the existing walls to expose the foundation. We then installed full-height wall waterproofing along the foundation perimeter — a step usually skipped in cosmetic basement remodels — and built new framed walls in front of the waterproofed surface so the finished space stays dry even under heavy rain or snowmelt. The concrete sub-floor was levelled with a self-levelling compound, and waterproof vinyl plank was installed across the entire basement floor for a finish that can handle moisture if any ever returns.
The basement was finished with fresh paint, upgraded 7″ step-bevel baseboards, and a professional final clean. What started as a flooring job ended as a full waterproofing-first renovation — a more involved project than originally scoped, but the only correct response to mould in a below-grade space. The result is a comfortable, dry basement that reads as a planned upgrade rather than a covered-up repair.
Project details
- Location
- Toronto, Ontario
- Scope
- Basement waterproofing + full renovation (mould remediation)
- Services performed
- Mould remediation and drying
- Foundation perimeter excavation
- Wall waterproofing membrane install
- Wall demolition and reframing
- Sub-floor levelling
- Waterproof flooring install
- Painting and baseboard install
- Materials & finishes
- Waterproofing membrane (foundation perimeter)
- Self-levelling compound (concrete sub-floor)
- Waterproof vinyl plank flooring
- 7" step-bevel baseboards
