• We resurface and restore decramastic & stone chip roofs

  • Expert workmanship & quality materials - covered by our warranties

  • Expert workmanship & quality materials - for another lifetime of service

  • Resurfaced to new condition - ready for another lifetime of service

  • Expert workmanship & quality materials you can trust - covered by our warranties

  • Protectakote - We use the world's best technology to put your roof right!

Brief history of stone chip roofs

When stone chip on steel first came into use, two methods were used to bond the chip to the metal. Mastic was widely used and over time, proved to be a failure, resulting in balding roofs and loose stone chips clogging gutters and downpipes. During the same time period, acrylic resin bonding proved to be a long term performance winner.

The Kowhai `ProtectaKote’ stone chip re-surfacing system has utilised the proven acrylic bonding method for over 30 years backed by performance warranties among the best in New Zealand.

In short, your roof is pressure washed and then sterilised to prevent moss & mould. Flashings are checked, bent tiles pulled up, rust areas cleaned back and spot primed, new stone chip is applied as required with the first basecoat. Finishing is with high-build Acrylic plus an overglaze.


  • The waterblasting process to clean and prepare your roof

  • Applying the sterilising solution to prevent moss and mould

  • Flashings are checked, worst bent tiles are pulled up, rust areas cleaned back and spot primed and the first coat is applied

  • Base areas are re-coated with stone chips during the first coat

  • The second Hi-Build top coating is applied

  • Final matt overglazing creates a total weather barrier

  • Finished! Restored to just like new!

Protectakote Roof Painting System and Warranty Options

Kowhai Quality Coatings have been delivering and perfecting home improvement services since 1977. With over 30 years of roof painting expertise to build on, Kowhai today has licensed applicators throughout New Zealand. Every applicator is fully trained in our PROTECTAKOTE system, through to registration as a Licensed Kowhai Applicator. At Kowhai, we manufacture our own coatings to our own long-life performance tested formulations.


Our proven Moss Control service also forms the basis of our optional Roof Maintenance Programme entailing regular 3 yearly moss control applications. This allows us to offer extended warranties on both our materials and our workmanship.

We pride ourselves on our ability to put your roof right at the right price. You can choose from two high quality PROTECTAKOTE systems to suit your budget.


Premium System

Offers a 10 year total warranty, or can be upgraded to a 15 year total warranty incorporating our moss control Roof Maintenance Programme.


Standard System

Offers a 10 year pro rata warranty or can be upgraded to our 10 year total warranty in conjunction with our regular 3 yearly Roof Maintenance Programme.