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300+ Sudbury properties restored · 10+ years · Fully guaranteed work

A permanently dry basement, without the guesswork or the repeat repairs. — free basement assessment in Sudbury

Sudbury homeowners: we find the real reason water is getting into your basement, fix it at the source, and back the work with a written guarantee. One visit, one clear plan, one fixed price. No guesswork, no surprise costs, no callbacks next spring.

Book My Free Basement Assessment

Free 30-minute on-site assessment. No obligation, no pressure, no cost.

★★★★★

Average 5-star rating

Reviewed by homeowners across Greater Sudbury

“Excellent foundation waterproofing services in Sudbury.”Amal

“Best basement waterproofing contractor in Sudbury.”Hassan

“Best basement waterproofing contractor in Sudbury.”Ahmed

Keep Dry contractor and homeowner inspecting a dry basement beside the sump pit
A real Keep Dry assessment in Sudbury. The sump pit, the wall, and the drainage are all checked before anything is quoted.

If you have tried a patch before, you know why it came back.

The crack everyone sees is rarely the real entry point. Water travels along the footing and can show up metres from where it gets in, so sealing one visible crack feels like a fix until the next heavy rain.

Damp basements smell, ruin stored belongings, lift flooring and devalue the house. And the worst part is paying twice because the first repair treated the symptom, not the source.

The mechanism

The Keep Dry Source-First Method.

01

Find the source, not the symptom.

We check the walls, footing, grading, weeping tile and sump before quoting anything.

02

Fix it at the source.

We use the right system for that specific problem—waterproofing, crack repair, drainage or footings—not a one-size-fits-all patch.

03

Verify and guarantee.

We test, document and stand behind the work with a written guarantee, showing you exactly what we did and why.

What you actually get when the source is fixed.

  • A basement that stays dry through snowmelt and spring thaw
  • No musty smell
  • Belongings and finished space protected
  • The structural problem stopped instead of continuing to spread
  • No repeat repair bills
  • A house that is easier to sell and worth more
  • A straight-talking contractor who tells you what you need and what you do not

Claims are easy. Here is what Sudbury homeowners say.

Proof that holds up.

10+ years

of experience

300+ properties

restored

“I recommend Keep Dry Foundation for their excellent foundation waterproofing services in Sudbury. Thanks to all the team.”

Amal Labbi

“Thank you Keep Dry Foundation for your services. Best basement waterproofing contractor in Sudbury.”

Hassan Mouhssin

“Thank you Keep Dry Foundation for your services. Best basement waterproofing contractor in Sudbury.”

Ahmed el.maataoui

“TJ at Keep Dry fixed our crumbling foundation professionally. We were 110% satisfied and impressed with everything. He kept us posted every step of the way and did exactly what he said he would do.”

Jim Tara P

The offer

What you get on the free assessment.

  • Full on-site inspection of walls, footing, grading, weeping tile and sump.
  • The true source of the water identified and explained in plain language.
  • A written fixed-price plan with no hidden extras.
  • A straight yes or no on whether you even need work done right now.

A service call and written assessment like this normally runs about $450. On this page it is free, because we would rather show you how we work before you spend a dollar with us.

Book your free assessment.

Tell us what is happening and we will confirm a time.

Two bonuses for booking through this page

Two more reasons to take the call.

Bonus 1 · The Keep Dry Spring Water Checklist

A plain-English list of the four things to check around your foundation each spring so small problems never become foundation problems, yours free whether you hire us or not.

Bonus 2 · Priority Scheduling

Book through this page and you are placed ahead of the standard queue so the work happens before the next thaw, not after it.

The guarantee

If water still gets in, we make it right.

If water still gets in where we worked, we come back and make it right. Our workmanship is guaranteed in writing. That is the whole point of fixing the source instead of patching the symptom.

Spring thaw fills the calendar first.

We only take on a limited number of new projects each month, and spring thaw fills our calendar first. Book your free assessment now and we will hold a spot for you.

Before you book

Questions homeowners ask.

How much does basement waterproofing cost?

Targeted areas of 5–20 linear feet generally run $6,000–$17,000. Larger jobs over 30 linear feet generally run $24,000–$40,000. We confirm the real scope and fixed price after seeing the property.

Will you have to dig up my whole yard?

Not always. The work depends on where water is entering and which system solves it. We inspect first and only recommend the excavation the source actually requires.

My crack looks small, do I really need this?

A small crack can still let water travel along the footing or signal a larger drainage issue. An assessment tells you whether it needs work now or simply monitoring.

How long does the work take?

Timing depends on the size and type of repair. We explain the expected schedule in the written plan before you commit.

What if the water comes back?

If water still gets in where we worked, we come back and make it right. Our workmanship is guaranteed in writing.

Are you insured and do you guarantee the work?

We can provide current insurance information before work begins. Waterproofing and foundation crack repair carry a 26-year transferable guarantee.

How soon can you get here?

Free Sudbury site inspections are available Monday or Tuesday, with appointment slots at 11am or 2pm. Book now and we will confirm the next available time.

Do I need to be home for the assessment?

Someone who can show us the basement and answer questions should be there. That lets us inspect the walls, footing, drainage and sump properly and explain the plan in person.

Let's get your basement dry.

One clear assessment. One honest answer. A plan you can act on.

Call or book: 705-562-4999

Book My Free Basement Assessment

P.S. Water always finds the weak spot, and it usually does it during the first big rain or spring thaw. The cheapest repair is the one you do once. Book the free assessment now, even if you are not ready to fix it this month.