The AVH Foundations family
Basement waterproofing · Caledonia

Basement waterproofing in Caledonia.

Heavy rain has flooded Caledonia basements more than once. We find where water gets into yours, from cracks to failed weeping tile, and stop it, backed by the No Leak Guarantee.

Call (289) 880-7988
5-star Google reviewsNo Leak GuaranteeOur own crew, never subcontractors
Sump pump and sealed pit in a block foundation basement
Local knowledge

Clay ground and a river through town.

The Grand River runs right through Caledonia, and low-lying streets near it, like Forfar Street, still see high water in spring. For most homes, though, the bigger risk is rain. On July 29, 2023, heavy rainfall flooded basements and roads across Haldimand County, and Caledonia was hit hard.

The soil doesn't help. Much of the area sits on the Haldimand Clay Plain, where clay-rich soils drain poorly in places, so water can sit against a foundation long after a storm has passed. That's when cracks start to leak, window wells fill and an undersized sump falls behind.

Waterproofing often needs a permit here. Haldimand County lists adding drainage, dampproofing or waterproofing to a foundation, and adding a backwater valve, as work that requires a building permit, so we plan for it from the first visit.

Is this you?

Basement problems we fix most in Caledonia

  • Water through cracks after heavy rain
  • Wet floor-wall joints every spring
  • Sump pumps that can't keep up in a storm
  • Window wells filling with water
  • Musty, damp basements in older homes
  • Newer homes leaking at cracks or tie holes
Neighbourhoods

Where we work in Caledonia

We keep basements dry on both sides of the river, including:

Downtown CaledoniaNorth of the riverSouth of the riverAvalonMcClung Road
Questions

Caledonia questions, answered

Does Haldimand County help pay for flood protection?
Partly. Haldimand's Home Flood Protection Program, launched in June 2025, has covered half the cost of a professional home flood assessment, leaving the homeowner about $275 plus tax for an on-site visit. It doesn't pay for backwater valves, sump pumps or waterproofing, so check its current status with the County and budget for the work itself.
Do I need a permit for waterproofing in Caledonia?
Often, yes. Haldimand County lists adding drainage and dampproofing or waterproofing to a foundation, and adding a backwater valve, as work that needs a building permit. We'll tell you up front which permits your job needs and who is getting them.
Will waterproofing protect me if the Grand floods?
No. River flooding is managed by the Grand River Conservation Authority and the County, and no basement system is built to hold back a river. Waterproofing stops rain and groundwater getting through your foundation, which is the water most basements actually deal with.
The AVH Foundations family

Walls moving, not just leaking?

AVH Foundations in Caledonia

Underpinning, bowing walls and foundation rebuilds go to AVH Foundations, our structural crew. Same company, same phone number.

AVH Foundations in Caledonia
Reviews

What homeowners say

Basement Worx is owned and run by AVH Foundations, so these are AVH reviews. Straight from Google.

“Perfect! Alex came same day to assess the damage and what needed to be done after I was ghosted by an unscrupulous contractor. Returned as agreed, on time, and completed the job beyond my expectations. Would highly recommend.”

SBSarah BernardOntarioGoogle

“They truly care about their customers and take pride in their work. The crew was friendly and knowledgeable, and they used top-notch materials. My foundation problems were resolved efficiently, and I appreciate their dedication to quality.”

PSPeter StraussOntarioGoogle

“Alex and his team were fantastic. Super quick response, same-day service. He explained and educated me. Would highly recommend.”

MHMarc HarissonOntarioGoogle
Nearby

Also working near Caledonia.

Caledonia is the southern edge of our area. We also keep basements dry in these nearby towns.

Basement leak or foundation issue? Don't wait till it's too late.

A free, no-pressure quote from the people who'll actually do the work.

Call (289) 880-7988
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