
Kowhai Wellington City
Kowhai Wellington City has been proudly owned and operated by Ostro Roof Coatings, T/A Kowhai Roofs Wellington, since 2020.
Owner Frank Hogan brings extensive experience as a skilled tradesman in painting, plastering, and building before finding his true passion in roofing. Over time, Frank has grown his team to seven roofers (including himself), supported by contractors and office staff.
These days, Frank focuses on pricing, team management, and quality control rather than being on the tools. His perfectionist approach is reflected in the glowing client testimonials the business receives.
Frank’s commitment to quality has seen him expand services into the Wairarapa and, more recently, Hawke’s Bay. Safety is also a top priority. Every team member has completed Site Safe and Vertical Horizons Training, covering Working at Heights, Harness Safety, and Fall Arrest Systems. This ensures you can have complete confidence in their ability to deliver safe, high-quality roof repairs.
Kowhai Wellington City proudly services the region from Upper Hutt to Island Bay.
Before & After
Examples of work by Kowhai Wellington City. Click on photos to enlarge.

Decramastic roof recoated in Standard Grey

Recoated in Windsor Grey

Recoated in Ebony

Decramastic roof recoated in Standard Grey



