Arsenal Roofing & General Contractor First Review Sag in North York 10/10 Flat Roof Almost 3 years ago, Ernst and he's crew where very wonderful, they did a great job on my roof. I will definitely recomend them to anyone. The job was clean and tidy. Best Roofing Company I have ever dealt with. Job Price Was this review helpful? Company ResponseThank you so much Mr Sag for your review.