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Ontario Downspout Service

Updated 2026-09-25 · 19,386 reviewed · 1,323 listed · Scored from 115 Google reviews · How we rank ›

4.9(115) 87 composite score See reviews on Google ✓ Google-verified
Eavestrough & GuttersGutter ServiceRoof Inspection & MaintenanceRoofing ContractorSiding ContractorSkylight ContractorSheet Metal ContractorWaterproofing ServiceInsulation ContractorRoof RepairRoof Replacement & InstallationFlat & Commercial Roofing24/7 Emergency RoofingChimney Services

Google-verified115 Google reviewsdecades

Ontario Downspout Service
Location
Concord, Vaughan
Services
Eavestrough & Gutters, Gutter Service, Roof Inspection & Maintenance
Reviews
115
Ranking
#4 in Eavestrough & Gutters
Best for
Homeowners needing coordinated roof, gutter, and siding work done thoroughly and promptly.

Core details are sourced from this business's Google Business Profile (checked 2026-09-25). Website-sourced details were fetched 2026-08-25.

What do recent reviews say?

Mark and his crew handle everything from gutters and downspouts to complete roof replacements, often finishing large projects in a single day with meticulous attention. Customers praise rapid response times, clear communication about what needs doing, honest assessments that don't push unnecessary work, and immaculate cleanup. The main caveat is a $500 upfront inspection fee that applies toward the quote if work proceeds but is forfeited if you decline the estimate.

Two reviewers took issue with this inspection structure, though many others found it reasonable. Most jobs involve Mark himself overseeing the work and his crew showing up at 7am sharp. Common threads include replaced eavestroughs and downspouts that handled severe weather well, roofs with complex tie-ins completed properly, and neighbours noting how carefully the team protected surrounding properties during work.

Praised for
  • Mark's responsiveness and expertise
  • professional crew, consistent quality workmanship
  • thorough cleanup after job
  • honest assessment and fair pricing
  • handles complex multi-trade projects efficiently
Watch-outs
  • $500 inspection fee not refundable if work not accepted
  • initial inspection cost perceived as non-negotiable gatekeeping
skilled-workmanshipprofessional-crewpunctualfair-pricingtransparent-estimatecleans-up-after-jobresponsive-quotesquality-materials
Best for: Homeowners needing coordinated roof, gutter, and siding work done thoroughly and promptly.
Think twice if: The $500 upfront inspection fee is non-refundable if you decline the work; confirm you're comfortable with this before booking.

What are they good at?

  • One-stop exterior contractor (roof, gutters, siding, soffit)
  • Mark oversees most jobs personally
  • handles complex tie-ins and emergency work same day or next
  • crew works long hours to complete jobs quickly

Worth knowing

  • Mark Stone leads most projects and does on-site quality checks
  • Crew typically starts at 7am and works until sundown on large jobs
  • Team completed one flat roof with multiple tie-ins and full cleanup same day (8 people, Mark plus crew of 4+)
  • Replaced rotten roof sheathing and fascia during gutter work for one customer
  • Emergency roof repair available; Mark responded to Sunday morning emergency within hours of Saturday night call
  • $500 inspection fee credited toward quote if work proceeds, forfeited if declined

What reviews say by service

Eavestrough & Gutters
Customers praise larger-capacity replacements that handled extreme weather; one 100-year storm showed no overflow or drainage failure
Roof Repair
Emergency repairs and honest assessment of remaining roof life valued; crew works long hours to complete work quickly
Roof Replacement & Installation
Complex flat roof tie-ins and full replacements completed with high workmanship; customers note attention to detail and design input
Roof Inspection & Maintenance
Mark provides thorough inspection, honest assessment of whether replacement is needed, and clearly explains findings
Siding Contractor
Soffit and fascia replacement praised for modern appearance and quality finish
Gutter Service
Gutter cleanout offered for ongoing maintenance; extensions and undersized-to-larger replacements handled

How it compares

  • Rated 4.9 against a 4.75 average across the 461 eavestrough & gutters businesses listed here.
  • Has more Google reviews than 93% of the businesses in this directory.

How we scored this

Ranking Method
Star rating 90
Review volume 90
Review recency 100
Review sentiment 70
Profile completeness 100
Verification 30

Rating breakdown

5
111
4
1
3
0
2
0
1
3

FAQ

How quickly can Mark's team come out?
Emergency roof leaks: within hours or next morning. Routine work: typically within days; one customer got a quote within days of first contact.
Will they clean up when finished?
Yes. Multiple reviews note driveway and garage left cleaner than before work started, and worksite kept spotless each evening.
Does Mark do the work himself or just supervise?
Mark oversees most jobs and is on-site for the majority of the time, doing much of the work himself alongside his crew.
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Last updated 2026-09-25