(Category:Contractor / Finishing & Interiors) Collosseum Finishing – Johannesburg-based specialists in high-end interior and exterior finishing solutions for homes and businesses. Collosseum Finishing, based in Johannesburg, Gauteng, specializes in high-end interior and exterior finishing services. They provide tiling, plastering, flooring, and decorative solutions for both residential and commercial projects, recognized for premium quality and attention to detail.