From a hairline crack to a fully soaked crawl space, our Markham crew has seen it and fixed it. No guesswork, no scare tactics — just a clear plan and a fair price.
Background-checked Markham technicians · 24/7 dispatch
Halo Water Proofing is a VA-licensed Exterior Waterproofing company that treats every Markham job like it's the only one on the schedule.
We don't run a bidding war between crews. The Markham technician who inspects your property is the same one who does the repair, start to finish.
We've worked on foundations from decades-old Markham homes to brand-new builds still settling into their soil, so whatever your basement is dealing with, we've likely seen a version of it nearby.
Talk to a real Markham technician today, not an automated queue. We'll explain what's going on and get you scheduled.
📞 +1-866-476-1348Most Markham calls didn't start with a flood — they started with one of these small signs weeks or months earlier.
If the basement smells damp no matter the season, water is likely finding a way in somewhere you can't see.
A crack that wasn't there last year is worth a look before it becomes an active leak point.
That white powder on basement walls is mineral residue left behind as water passes through the concrete.
A Markham sump pump that never rests is usually undersized or nearing the end of its life.
This is one sign we tell Markham customers never to wait on — wall movement tends to progress, not resolve on its own.
Flooring that's cupping near an exterior wall often traces straight back to a basement moisture issue below.
From a 2 a.m. sump pump failure to a planned exterior drainage project, here's what our Markham crews handle most.
Storm season keeps our Markham emergency line busy — active flooding always jumps ahead of routine inspections in the queue.
Get Emergency Help →We seal active Markham foundation cracks with polyurethane injection — stopping the leak at its source instead of patching the surface.
Ask About Crack Repair →A failed sump pump is the top reason for emergency calls across Markham after heavy rain — we install pumps sized to your actual water volume, plus battery backup for power outages.
Book a Pump Check →Some Markham properties need both systems working together — we'll say so honestly instead of selling just one.
Talk Drainage Options →A damp Markham crawl space drives up humidity throughout the house — we seal it completely with heavy-duty vapor barrier and add dehumidification where needed.
Get a Crawl Space Quote →Commercial water intrusion means bigger stakes — inventory, tenants, downtime. We scope commercial Markham jobs with written specs and a real timeline.
Request a Commercial Quote →Here's exactly what Markham customers can expect from first call to final walkthrough.
A real technician asks the right questions to understand what's likely happening at your Markham property before anyone drives out.
A Markham technician walks the property, checks the foundation and drainage, and explains what's found in plain language.
No verbal number that quietly grows once the truck pulls up — the written quote is the final word.
You get documentation of the work plus a real warranty — not just a handshake.
Plenty of companies advertise Exterior Waterproofing in Markham — here's what actually separates the ones worth calling from the ones that aren't.
We quote the job in writing after seeing it in person, so there's no surprise on the final invoice.
A local dispatch model means the technician who answers your questions is the same one who shows up.
Our major repairs come with written, transferable warranties — useful if you sell the Markham property later.
If your Markham basement just needs a small crack seal instead of a full system, that's exactly what we'll tell you.
We photograph the damage and provide a written scope your insurance adjuster can actually use.
Every Markham job reflects on the next referral, so we treat each one like it matters.
"Called during a storm and had a tech at my door within two hours. Explained everything before touching anything — basement's been dry since."
"Fair price, on time, cleaned up after. Wish every contractor worked this way."
"Our sump pump died during the worst storm of the year, obviously. Battery backup was installed the next day and we haven't worried since."
"Handled waterproofing for our parking structure with minimal disruption to tenants and stuck to the schedule."
"Expected a huge bill for three cracks, only one actually needed injection. Appreciated the honesty."
"First contractor who actually explained where the water was coming from instead of just quoting a number."
"Crew was respectful of our landscaping during the drain install and left the yard looking better than before they started."
We back our Markham work with real, transferable warranties because we plan to be here long after the job is done, not just for the one visit.
📞 +1-866-476-1348Whether you're in an older, established part of Markham or a newer subdivision still settling, we've likely already worked on a foundation like yours nearby.
Coverage in Markham includes 22643 and neighboring communities — if you're just outside that list, call anyway, since we often extend service case by case.
Use the map as a guide to our Markham service radius — a quick call confirms specifics.
One call to +1-866-476-1348 gets a licensed Markham technician on the schedule — often same-day, 24/7 for real emergencies.
📞 Call +1-866-476-1348 — Markham 24/7 Line