What does roof waterproofing cost in Newmarket?

Small porch and garage roofs in Newmarket are $1,100 to $2,300. Full flat-roof sections run $2,200 to $5,600.

How long does the system last?

Properly installed membrane systems carry a 10-year written warranty and typically last 15 to 20 years.

Can it be done in cold weather?

Torch-on systems can be installed into late fall. Liquid systems need milder temperatures.

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Membrane, sealing and flat-roof waterproofing systems. See real roof waterproofing prices in Newmarket in under 60 seconds.

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Typical roof waterproofing prices in Newmarket
Job type	Typical price
Porch or garage roofTorch-on or liquid membrane	$1,100 – $2,300
Flat roof sectionFull system with flashings	$2,200 – $5,600
Balcony / deck systemWalkable traffic-grade finish	$1,800 – $4,400

Ranges reflect Newmarket labour and material costs. Your calculator result is tailored to your answers.

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Licensed, insured, WETT & TSSA certified · 4.9★ from 743 GTA reviews

What Newmarket homeowners say

Reliable across three jobs
Used them for a sweep, a dryer vent, and a fireplace service. Same standard every time and the same technician twice, which I appreciated.

Helena B. · 2026-04-17

Bundled two services, saved the trip fee
Had the chimney and the dryer vent done on the same visit. Cheaper and half the disruption.

Farah N. · 2025-12-27

A real person answers the phone
No call centre, no chasing. Booked in two minutes and got a text when the truck was on the way.

Ryan K. · 2026-02-28

Documentation on everything
Photos, readings, and a written summary after every visit. Makes it easy to keep records for the house file.

Doug T. · 2026-01-11

Roof Waterproofing pricing questions

What does roof waterproofing cost in Newmarket?: Small porch and garage roofs in Newmarket are $1,100 to $2,300. Full flat-roof sections run $2,200 to $5,600.
How long does the system last?: Properly installed membrane systems carry a 10-year written warranty and typically last 15 to 20 years.
Can it be done in cold weather?: Torch-on systems can be installed into late fall. Liquid systems need milder temperatures.

Price another job

Roof Repair in NewmarketLeak tracing, shingle and flashing repairs with photo proof of the fix.Roof Replacement in NewmarketFull tear-off and re-roof with ice-and-water shield and new venting.Roof Inspection in NewmarketRoof-level and attic inspection with a dated photo report.

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Roof Waterproofing Cost in Newmarket — Get Your Price Instantly

What Newmarket homeowners say

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Roof Waterproofing pricing across the GTA

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