Shaded faces
Slopes that miss the sun stay damp longest, so growth tends to build there first. A face lit all day may need very little.
Auckland Roof Painting Pros
Auckland Roof Cleaning
Your Local Expert in Water Blasting and Roof Cleaning
Roof Cleaning in Auckland
Our Auckland Roof Cleaning service starts with the property and the surfaces involved. For roof cleaning, the important considerations include roof material, biological growth and controlled surface cleaning. Understanding the existing material, coating and condition helps define the right preparation before a finish is selected. Tell us about visible wear, previous work and any areas that need particular attention.
A useful proposal should set out the surfaces included, preparation, any agreed repairs, the coating system and access arrangements. Timing also needs to allow for suitable application and drying conditions. Share your address, photographs and preferred timing through the enquiry form, or call to discuss the project. We can then clarify the details that need assessment and the next step for your property.
Water Blasting Roof
Water blasting is a perfect method for cleaning iron roofs. Using high-pressure water, we will wash and rinse your entire iron roof. We will remove all types of dirt from your roof to your gutters.
This method also removes all moss, lichens, leaves, and mould from your roof. Enjoy a clean, brand-new-looking roof with the best Auckland roof painters.
Get a Free Estimate
Quotes depend on the individual property, surface condition and access.
Prefer to talk? 09 977 9907 · Mon–Fri 8am–6pm, Sat 9am–1pm
Where growth settles
Where moss and lichen take hold
Growth does not spread evenly. It follows shade, moisture and trapped debris, which is why one roof can be clean on one face and green on another.
Valleys and overlaps
Leaf litter and grit settle where roof planes meet and where sheets or tiles overlap. They hold moisture against the surface.
Under overhanging trees
Branches drop leaves and needles, shade the roof and drip onto it. Cutting back, where the tree is yours to trim, can slow regrowth.
The gutter line
Loosened growth washes down into the gutters. Cleaning the roof without clearing the run below only moves the problem.
Growth signs
Growth that has stopped being cosmetic
A little green is a surface matter. These point to growth that is holding water, loosening material or heading for the gutters.
Thick mats of moss
A dense layer can hold water against tiles or sheet laps for long stretches and lift at the edges. That is the stage where cleaning is worth doing soon.
Moss and grit in the gutters
Clumps and gritty residue in the run or on the path below mean the roof surface is shedding. The gutters will need clearing alongside the roof.
Dark streaks down the slope
Black or brown streaking that follows the fall of the roof is growth, not only dirt. It can return if the cause, usually shade and dampness, stays.
A coating that is already shedding
If paint is flaking or powdery under the growth, rough cleaning can strip more of it away. The method has to change, and a recoat may be the real question.
Around the clean
Clear the ground, then check the result
The wash itself is only the middle of it. What you do beforehand and what you check afterwards matter just as much.
Before
Clear the ground below
Move cars, outdoor furniture and anything fragile away from the walls. Close windows, and note where downpipes discharge so runoff can be directed.
During
Remove growth, protect the edges
Growth and grime come off with a method matched to the material, working so loosened debris and runoff do not land on walls, gardens or the neighbours.
After
Look at what it revealed
A clean surface shows cracked tiles, worn coating and rust more plainly. Decide then whether the roof needs repairs, a repaint, or just a repeat clean when growth returns.
Clean, then what?
Clean on its own, or prepare for paint?
Cleaning can be the whole job or the first stage of a bigger one. The state of the coating decides which.
Clean only
- The coating is intact and the colour is still acceptable.
- Growth and dirt are the main problem.
- The aim is to keep the roof as it is.
- Expect to repeat the clean if shade and damp remain.
Clean, then recoat
- Paint is chalky, flaking or worn through in places.
- You want a colour change or added protection.
- The clean becomes preparation, so repairs and drying conditions come into it.
- The scope covers cleaning, repairs and coating together.
If the coating still looks sound, a clean may be all the roof needs. If it is flaking or chalky, treat the clean as the first stage of a repaint.
After the clean
Next moves once the roof is clean
Once the surface is clear, the next decision depends on what it shows. These pages cover the usual directions.
Roof painting
A cleaned, sound roof is the starting point for a repaint, and this covers primer, topcoat and colour.
Roof restoration and coatings
If cleaning exposes cracked tiles, rust or lifting paint, repairs come before any coating.
Gutter cleaning
Loosened moss and grit end up in the gutters, which is why the two jobs are often done together.
Gutter repair
Growth and silt that have sat in a gutter can hide leaking joints until the run is cleared.
Roof cleaning enquiry
Show us the roof as it is today
Tell us the roof material, how shaded it is and where the growth sits. Photos from the ground help work out whether it needs cleaning, repairs or a recoat.