Roof Painting & Restoration
Roof coating that extends the life of your roof rather than just changing its colour — with the wash, treatment and rust management that make the difference.
Why roofs need coating, not just colour
A roof coating is the barrier between your roofing substrate and the harshest exposure on the building. On metal roofs the coating prevents corrosion; on concrete tile it prevents water absorption and the freeze-thaw damage that follows.
Recoating a sound roof is a fraction of the cost of replacing a failed one. Recoating a roof that has already corroded through is money spent on a roof that still needs replacing — we will tell you which situation you are in before quoting.
Roof types and how we treat them
Coloursteel and longrun metal — washed, treated for surface rust, primed with an etch or rust-inhibitive primer, then finished with a roof-grade coating. Fixings are checked and replaced where corroded.
Concrete tile — moss and lichen treated at the root, broken tiles replaced, then sealed and coated. Concrete tile is porous, and sealing is what stops water absorption.
Decramastic and pressed metal tile — stone chip loss is assessed first; these roofs can be restored but only within limits, and we will say so if replacement is the honest answer.
Corrugated iron — rust management is the entire job. Surface rust is treated and converted; perforated sheets are replaced.
Moss, lichen and why washing alone doesn't work
Moss and lichen on New Zealand roofs are not merely cosmetic. Lichen roots into the coating, holds moisture against the substrate, and accelerates corrosion beneath it.
Water blasting removes the visible growth but leaves the spores. Without chemical treatment the growth returns within a season or two — often before the new coating has fully weathered. Every roof job we do includes biocide treatment, not just washing.
Safety and access
Roof work is height work, and New Zealand regulations are specific about it. Edge protection, harness systems and, where required, scaffolding are included in our quotes rather than added later.
This is also the strongest reason not to treat roof painting as a DIY project. Roof falls are among the most common serious injuries in New Zealand construction.
Frequently Asked Questions
A properly prepared and coated roof typically lasts 10 to 15 years before it needs recoating. Coastal properties exposed to salt air are usually at the shorter end of that range.
Surface rust can be treated, converted and coated successfully. Once corrosion has perforated the sheets, coating is no longer the right answer and replacement of the affected sheets is required. We assess and tell you honestly which applies.
Yes, always. Water blasting removes visible growth but leaves spores behind, so the growth returns within a season or two. Every roof job includes biocide treatment as well as washing.
Recoating a structurally sound roof costs a fraction of replacing it and can extend its life by 10 to 15 years. Recoating a roof that has already corroded through is not worthwhile, and we will tell you if that is the situation.
A typical residential roof takes two to four days including washing, treatment, drying, priming and topcoats. Weather is the main variable, as each stage needs dry conditions.
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Free, no-obligation quotes across the North Island.