DIY vs Pro · Ajax
DIY vs Pro: Waterproofing in Ajax
This is the working reference we hand to Ajax clients before we book a waterproofing appointment. Lake-effect moisture accelerates crown spalling and flashing rot. Below: what to expect, real numbers, and the questions worth asking before you book.
Quick answer
DIY vs Pro: Waterproofing in Ajax. Lake-effect moisture accelerates crown spalling and flashing rot.
Typical
$438–$702
Duration
2–3 hrs
Freeze-thaw
54/yr
What you can safely DIY
Visual inspection with a flashlight, exterior debris clearing from the cap area (from a stable ladder, not the roof), and photo-documentation of concerns. That's the safe list.
What needs a pro
Anything requiring roof access, working chemicals or sealants, disturbing masonry, disassembling the appliance, or interpreting a scan. The insurance and liability exposure on DIY waterproofing is disproportionate to the cost savings.
The Ajax rental market angle
Landlord waterproofing DIY on rental units in Ajax voids most policies and shifts full liability to the owner under RTA §20. Not worth it.
Common questions
Do you service condos and heritage homes in Ajax?
Yes. Condo boards in Ajax typically want a scope letter and insurance certificate 48 hours out; heritage properties need product substitutions we pre-source.
When's the best time of year for waterproofing in Ajax?
Late September through mid-November with Ajax averaging 95cm of snow starting December. Spring (April–May) is the second window and often 10–15% cheaper.
What warranty do you offer on waterproofing in Ajax?
Five-year written workmanship warranty on materials and labour, transferable to a new homeowner within that window. Manufacturer warranties on any installed products pass through separately.
How long does waterproofing take in Ajax?
2–3 hrs is typical for a straightforward job. Bookings in dense downtown zones add 15–20 minutes for parking and staging.
How much does waterproofing cost in Ajax?
Most Ajax jobs land between $438 and $702. Complex access or heritage masonry can reach $1,140. We quote fixed price after a free on-site scope.
Do you need a permit for waterproofing in Ajax?
Cleaning and inspection are permit-exempt in Ajax. Structural masonry, liner replacement, or a new appliance install typically need one — we pull it as part of the job when required.
What if it rains or snows on the booking day?
Roof-side work reschedules to the next dry window at no charge. Interior scopes (firebox, damper, appliance) proceed regardless.
Are you WETT and WSIB certified?
Yes — WETT SITE-Comprehensive #C-46082, CSIA #12408, and active WSIB #7248194. Certificates emailed on request before the job.
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