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Flood Protection

Basement Waterproofing From the Outside In

A dry basement starts outside the wall. We excavate, seal the foundation, install new drainage and connect it to a sump system, so water is stopped before it ever reaches your living space.

  • Free written estimates
  • Permits and rebates handled
  • 24/7 emergency service
Illustrative photo of a worker applying a waterproofing coating to an exterior foundation wall

Is there a damp patch on your basement wall that never quite dries, or a musty smell you cannot get rid of? Water in a basement is more than a nuisance. It damages finishes, encourages mould and can weaken the foundation over time.

We offer basement waterproofing for homes across Toronto, Mississauga, Oakville, Burlington, Milton and the rest of our service area. Our approach is to find the source, fix it from the outside and give you a basement you can finish and use with confidence.

Start with the cause

Water gets into basements in several ways. Grading that slopes toward the house, downspouts that dump water at the foundation, failed weeping tile, leaking window wells and foundation cracks are the most common. We check each of these before we recommend a solution, because sometimes a smaller fix is all you need.

Exterior waterproofing

For walls that are letting in water, exterior waterproofing is the most complete fix. We excavate along the foundation, clean the wall, repair cracks and apply a waterproofing coating and a dimpled drainage membrane. New weeping tile on clear stone carries water to a sump pit or approved outlet, and we backfill and grade the soil to shed water away from the house.

The membrane on its own is not usually subsidized, but the drainage work around it often is. In Halton Region, weeping tile disconnection combined with a sump pump qualifies for 100% of eligible costs up to $6,500. In Toronto, the sump pump, battery backup and pipe severance each have their own subsidy. We show what applies in your estimate.

A dry basement you can enjoy

Waterproofing is a worthwhile investment in your home’s comfort and value. Reach out to our team to book an assessment, and we will put a clear, itemized plan in writing.

Know the signs

Signs you need basement waterproofing

  • Water or damp patches on basement walls after rain
  • White, chalky residue on concrete or block walls
  • Musty smells or mould on drywall and baseboards
  • Cracks in the foundation that let in water
  • Water entering at the joint between the wall and the floor
  • You are finishing the basement and want to protect the investment

Our approach

How we waterproof basements

Find the source

We look at grading, downspouts, window wells and cracks, and inspect the weeping tile, so the fix targets the real cause.

Exterior excavation and membrane

We excavate along the affected walls, clean and repair the foundation, then apply a waterproofing coating and drainage membrane.

New weeping tile

New perforated weeping tile on clear stone carries water away from the footing to a sump pit or approved outlet.

Backfill and grading

We backfill with free-draining material and grade the soil so surface water flows away from the house.

Planning basement waterproofing?

Send us a few details and photos. We will book a visit and give you a written quote with the rebates that apply.

Pricing

What affects the cost of basement waterproofing

Every property is different, so we quote after we inspect. These are the factors that move the price up or down.

  • Length and depth of the foundation walls to be excavated
  • Foundation type and the number of cracks to repair
  • Obstacles such as decks, porches, driveways and landscaping
  • New weeping tile, sump pit and pump
  • Window well upgrades
  • Interior finishes that need to be removed or protected

Rebates that can lower your cost

Toronto Basement Flooding Protection Subsidy Program
  • Sump pump80% up to $2,250
  • Weeping tile pipe severance and capping80% up to $400
Halton Region Basement Flooding Prevention Subsidy Program
  • Weeping tile disconnection with sump pump100% up to $6,500

Amounts from official program pages. We prepare the paperwork for you.

Estimate your rebate

Our process

How we work

Every job follows the same six steps, so you always know what happens next and what it costs.

  1. Camera first

    We look inside the pipe or trace the line before anyone talks price, so the quote is based on what is really there.

  2. Written quote

    You get an itemized estimate in writing, with the rebates that apply and your cost after them.

  3. Permits booked

    We pull the plumbing or building permit and book the inspections with your municipality.

  4. Low-dig work

    Where the ground allows, we use trenchless methods to replace pipe through small access pits.

  5. Restoration

    We backfill, compact and tidy the site. Any concrete, sod or finish restoration is listed line by line in your quote.

  6. Rebate filing

    We prepare the invoices, photos and permit proof your rebate application needs.

Get a clear, written quote before any work starts

Tell us what is going on and we will book a visit, inspect the problem and give you an itemized estimate with the rebates that apply.

Service areas

Basement Waterproofing across Toronto, Peel and Halton

Our crews work across these communities every week.

FAQ

Basement Waterproofing questions

Straight answers to the questions homeowners ask us most. If yours is not here, give us a call.

Is exterior or interior waterproofing better?

Exterior waterproofing stops water at the outside of the wall and is the most complete solution. Interior drainage can manage water that gets in and is sometimes the practical choice where exterior access is limited. We explain both options.

Can one wall be waterproofed instead of the whole house?

Yes. If only one or two walls are letting in water, we can often focus the work there, which keeps the cost down.

Does waterproofing qualify for any rebates?

The waterproofing membrane itself is not usually subsidized, but related work often is. In Halton, weeping tile disconnection with a sump pump qualifies for up to $6,500, and in Toronto the sump pump and pipe severance have their own subsidies.

When is the best time to waterproof?

Spring through fall is the easiest time to excavate, and it is best done before you finish the basement. If water is already coming in, it is worth addressing sooner.

Ready when you are

Call us or send a few details. We will explain your options in plain language and put everything in writing.