Roof Moss & Lichen Treatment in Wellington
If you need roof moss treatment in Wellington, we soft wash and treat your roof to kill moss and lichen at the root, protecting the surface without high-pressure damage.
What's Included in Our Moss & Lichen Treatment
Moss and lichen are more than an eyesore. They hold moisture against the roof surface, lift and dislodge tiles, break down coatings, and wash into gutters where they cause blockages and overflow. Our moss and lichen treatment removes the growth and, crucially, kills the spores at the root so it does not simply grow straight back. We combine careful cleaning with a treatment application suited to your roof type, whether concrete tile, Decramastic, iron or membrane.
For delicate or coated roofs we favour a soft-wash approach over aggressive high-pressure blasting, which can strip coatings, force water under tiles and shorten a roof's life. The result is a clean roof, protected against regrowth, without the damage a careless waterblast can cause.
Why Moss Is a Problem, Not Just a Look
- It traps moisture against the roof, accelerating rot, rust and coating breakdown
- Its roots lift and dislodge tiles, opening paths for leaks
- It washes into gutters and downpipes, causing blockages and overflow
- It makes the whole house look tired and neglected, hurting kerb appeal and value
- Left unchecked, it shortens the usable life of the roof
Our Treatment Process
- Inspect: We assess the roof type, the extent of growth and the surface condition.
- Clean: We remove moss and lichen using the gentlest effective method for your roof.
- Treat: We apply a treatment that kills spores at the root to slow regrowth.
- Clear: We flush moss debris out of the gutters so they do not block.
Soft Wash vs High-Pressure Blasting
There is a right and a wrong way to clean a roof. High-pressure waterblasting can be appropriate as the first step of a full restoration on a sound roof that is about to be recoated. On its own, though, aggressive blasting on tiles or coated roofs can strip the protective surface, crack brittle tiles and drive water under the roofing, causing the very leaks you were trying to avoid. For maintenance cleaning we generally recommend a controlled soft-wash and chemical treatment that kills the moss without hammering the roof. We will always match the method to your roof.
Why Wellington Roofs Grow So Much Moss
Wellington's climate is close to ideal for moss and lichen: damp, mild and often shaded by hills and mature trees. South-facing roofs and homes tucked into sheltered gullies see the heaviest growth, sometimes within a couple of years of a clean. Because the conditions are so favourable, a one-off scrub rarely lasts here. The value of a proper treatment is in killing the spores so regrowth is slow, and pairing it with a maintenance visit every year or two keeps the roof clean, protected and draining freely.
Moss Treatment Pricing
Treatment is priced on the roof size and pitch, the roof type, how heavy the growth is, and access. A straightforward treat-and-clean on an accessible roof is very affordable, and it is far cheaper than the tile, coating and gutter damage that unchecked moss eventually causes. We provide a clear written quote after inspecting the roof, and can set up a simple maintenance schedule if you would like to keep on top of it.
Why Choose Roof Repair Wellington
Built for Wellington Weather
We have repaired roofs across the region since 2013, through everything the Cook Strait southerly throws at them. Wellington sits in a very high wind zone, so we fix to hold in gusts that regularly top 140km/h. Local experience means we know exactly where these roofs fail.
Fast, Honest Response
We reply to every enquiry within two business hours and give you a clear written quote before any work starts. No vague estimates and no pressure to spend more than you need. We recommend the option that genuinely serves your roof and your budget.
Tidy Work, Guaranteed
Every job is backed by our workmanship guarantee, and we leave your property spotless, right down to sweeping for stray roofing nails. We work to the New Zealand Building Code and follow Site Safe practices on every job.
What Customers Say
"Our south-facing roof was green with moss. They treated it properly and it's stayed clean far longer than the last cleaner's effort."Catherine B. Wadestown
"Chose the soft-wash option so our old tiles weren't damaged. Roof looks fantastic and the gutters were cleared too."Raymond L. Hataitai
"Honest about not blasting our coated roof. Killed the moss at the root and explained how to keep it away."Jitendra J. Churton Park
Roof Moss & Lichen Treatment FAQs
Will the moss just grow back?
Not quickly, if it is treated properly. Removing the visible moss is only half the job. We apply a treatment that kills the spores at the root, which greatly slows regrowth. In Wellington's damp climate a maintenance visit every year or two keeps it in check.
Is waterblasting bad for my roof?
High-pressure blasting has its place as the first step of a full restoration, but on its own it can strip coatings, crack tiles and force water under the roofing. For maintenance cleaning we usually recommend a gentler soft-wash and treatment.
Does moss actually cause leaks?
Yes. Moss holds moisture against the roof, its roots lift and dislodge tiles, and it washes into gutters causing overflow. All of these create paths for water to get into the home over time.
How often should I treat my roof for moss?
In Wellington's shaded, damp conditions, every one to two years is a good rhythm, more often for heavily shaded, south-facing roofs. Regular treatment is far cheaper than repairing the damage moss causes.
Roof Turning Green?
Get a free moss treatment quote from a local roofer today.
Get a Free Quoteor call 022 451 8971