Best Roofers in Sarnia, Ontario
The most trusted roofer in Sarnia, Ontario is Lambton Developments, with a ProScore of 57/100.
The most trusted roofer in Sarnia, Ontario is Lambton Developments, with a ProScore of 57/100. ProScore has verified 16 roofers in Sarnia, scoring each across 10+ data sources and 20+ trust signals. None of the 16 meet the Trusted-tier (65+) threshold yet.
Last updated: June 20, 2026 · Data refreshed daily
How ProScore Ranks Roofers
Every roofer in Sarnia is evaluated across four pillars: Reputation (ratings across multiple platforms), Verification (government licensing and WSIB), Transparency (online presence and profile completeness), and Sentiment (AI analysis of customer reviews). The result is a ProScore from 0 to 100.
Read the full methodology →Frequently Asked Questions
Who is the best roofer in Sarnia?
Lambton Developments has the highest ProScore (57/100) among 16 verified roofers in Sarnia, Ontario. Rankings are based on ProScore, which evaluates ratings, government licensing, WSIB coverage, and AI-analyzed customer sentiment.
How do I find a trustworthy roofer in Sarnia?
Look for roofers with verified active WSIB coverage, and consistent ratings across multiple platforms. ProScore aggregates these signals into a single score from 0-100. In Sarnia, 0 roofers hold Elite-tier ProScores (80+), 0 are Trusted-tier (65+), and 7 are Good-tier (50+).
Are roofers in Sarnia licensed?
Roofers in Ontario should hold valid business registration and active WSIB workers compensation coverage. ProScore verifies these credentials for every provider. Of the top 5 roofers in Sarnia by ProScore, 3 carry active WSIB coverage.
How many verified roofers are in Sarnia?
ProScore has verified and scored 16 roofers in Sarnia, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Data is refreshed daily.
What's the ProScore distribution among roofers in Sarnia?
Among 16 verified roofers in Sarnia, Ontario: 0 are Elite-tier (80+), 0 are Trusted-tier (65+), and 7 are Good-tier (50+). The top 5 average a ProScore of 55/100, with Lambton Developments leading at 57/100.