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Blackstar Aluminum Ltd Toronto

Updated 2026-09-25 · 19,386 reviewed · 1,323 listed · Scored from 230 Google reviews · How we rank ›

4.8(230) 82 composite score See reviews on Google ✓ Google-verified
Siding ContractorEavestrough & GuttersSheet Metal ContractorGutter ServiceRoof Inspection & MaintenanceRoofing ContractorSkylight ContractorWaterproofing ServiceInsulation ContractorMetal RoofingChimney Services

Google-verified230 Google reviews

Blackstar Aluminum Ltd Toronto
Location
North York
Services
Siding Contractor, Eavestrough & Gutters, Sheet Metal Contractor
Reviews
230
Ranking
#66 in Siding Contractor
Best for
Homeowners seeking fast eavestrough and siding installation with minimal ongoing maintenance.

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

Compare: DVC Aluminum vs Blackstar Aluminum: which siding contractor wins?

What do recent reviews say?

Most reviewers praise Blackstar's professionalism, clean work, and reliable gutter systems with guards that eliminate yearly maintenance. However, recent complaints reveal serious flaws: one customer's gutters were installed backwards (sloping away from downspouts), causing standing water and dirt buildup, and the company ignored repeated requests for fixes since August.

Pat and the crew earn consistent praise for responsiveness, on-time service, and attention during siding and soffit work. The gutter guards genuinely perform as promised when installed correctly. A separate complaint flags an undisclosed $3000 minimum job threshold. The installation error and non-responsiveness expose a gap between brand promise and execution on critical details.

Praised for
  • professional crew
  • clean workmanship
  • effective gutter guards prevent clogs
  • quick turnaround and responsiveness
  • protective care during installation
Watch-outs
  • poor gutter slope causing water drainage failure
  • no response to post-installation complaints
  • rejection of jobs under $3000 threshold
  • lack of quality control on critical installations
professional-crewcleans-up-after-jobpunctualquality-materialsresponsive-quotesskilled-workmanshipshoddy-workmanshippoor-communication
Best for: Homeowners seeking fast eavestrough and siding installation with minimal ongoing maintenance.
Think twice if: Concerned about installation quality control or may have a job under $3000; recent complaint shows gutter slope error went unaddressed.

What are they good at?

  • Gutter guards eliminate yearly gutter cleaning
  • Fast scheduling and on-time completion
  • Team leaves property cleaner than found
  • Long-term product reliability and support

Worth knowing

  • Pat (Patrick) is named contact for quotes and communication
  • Alex and Horacio among installation crew members mentioned
  • Gutter guards praised for preventing debris buildup and seasonal clogs
  • One installation error: gutters sloped away from downspout causing water stagnation
  • Customer complaint unresolved for four months as of review date
  • Church and multi-property commercial clients mentioned

What reviews say by service

Eavestrough & Gutters
Excellent when installed correctly; gutter guards prevent clogs. One critical failure: gutters sloped backward, causing standing water and ignored complaint.
Gutter Service
Fast response and repair on disconnected downspout; maintenance-free operation praised over years.
Siding Contractor
Professional, clean work; siding and soffit refinish transforms home appearance.
Roof Inspection & Maintenance
Team works safely around metal roofs; no damage during installation.
Sheet Metal Contractor
Quality aluminum products and professional installation.
Skylight Contractor
No specific review evidence.

How it compares

  • Rated 4.8 against a 4.61 average across the 1084 siding contractor businesses listed here.
  • Has more Google reviews than 98% of the businesses in this directory.

How we scored this

Ranking Method
Star rating 85
Review volume 100
Review recency 100
Review sentiment 50
Profile completeness 100
Verification 30

Rating breakdown

5
209
4
8
3
1
2
2
1
10

FAQ

How long does a gutter and guard installation take?
Most installations are completed in one day, with crew arriving on schedule.
Do the gutter guards really prevent clogs?
Yes. Multiple reviewers over years report no debris buildup and no need to clean gutters annually.
Will the crew protect my roof or siding during installation?
Yes. They bring protective equipment and take care to prevent damage; one reviewer with a metal roof saw no damage.
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Last updated 2026-09-25