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Extend the life of your Roof with regular washing

Your roof, whether it is asphalt, tile or shingles, is one of the most expensive parts of your house. It endures incredible abuse…rain, wind, hail, heat and freezing cold. The mere fact it can do so with what are essentially floppy pieces of asphalt, fiberglass and Limestone is pretty amazing. What is more, your roof has a warranty on it which calls for proper maintenance. Properly maintained, a good roof should last at least 3 decades.

Before and after cleaning of asphalt shingles for roof washing aucklandBefore and after cleaning of asphalt shingles for roof washing auckland 


Want to lose 1/3 of your roof life?  Don't clean it!



Your roof is under constant assault. Besides the weather, heat and cold, there are living organisms which literally eat your roof shingles. Organisms get underneath your roof shingles, lifting them up making it easy for rain and wind to damage them. Without regular roof washing organisms which retain water settle on your roof, causing it to soften and rot. Organisms that eat the shingles and darken your roof, leading to ugly blackening, streaks, overheating, premature drying, cracking and splitting. These organisms are so damaging roof manufacturers state that you must clean your roof in order to maintain your warranty.

Roof Washing: An Important Part of Home Maintenance

Cleaning your roof is an important part of home maintenance. If you think about the damage that can be caused by a failed roof, it should be clear that you want to do everything possible to keep your roof in top operating condition. Properly roof washing and maintaining your roof assures the maximum amount of life. With a new roof costing what a car does these days, it is a smart financial move!

Besides the fact that roof washing keeps the roof in good condition, it also helps spot damage.

Having somebody examine your roof every few years will allow them to catch problems early. Soft spots, failures in the flashing, cracked vent boots, missing shingles, missing vent tops…they all add up to roof leaks. Roof failures due to improper maintenance are a significant contribution to attic and structural mold. It is because of all the damage and premature failures caused by lack of roof maintenance and constant customer demand that we added roof cleaning to our company service offerings.

NO PRESSURE WASHING!Shingle roof in Auckland being cleanedShingle roof in Auckland being cleaned

If you have an asphalt shingle roof, pressure washing is a bad idea. It is prohibited by every asphalt roof manufacturer, roofing trade association, technical standards board, and insurance company. Pressure washers are great tools when used appropriately on the right surfaces, but powering off growth on asphalt shingles isn’t one of those surfaces.

What ARE Those Black Streaks?

Because Auckland is a humid area you’ve probably seen unsightly dark streaks on asphalt shingle roofs. Though often attributed to an accumulation of dirt, defective shingles, mold, or mildew; the most common culprit is actually a blue-green algae known as Gloeocapsa Magma which is spread by airborne spores.

You may also have noticed that algae stains are absent directly below the metal flashing around chimneys or roof vents. This is due to fact that copper and the zinc coating on galvanized sheet metal are toxic to algae. Every time it rains, trace amounts of metals are washed down the roof, inhibiting algae. 

Algae stains can be removed by cleaning, though they usually return. While an occasional cleaning might not harm your roof, repeated use of harsh chemicals, or the erosive effects of pressure washing, can damage or shorten the life of your roof.

Professional Roof Washing

Our cleaning system kills moss, lichen, gloeocapsa magma cyano bacterial colonies and algae.  The features of our service are:Roof cleaning auckland, removing algae and lichenRoof cleaning auckland, removing algae and lichen

  1. Pressure Free Cleaning System. The manufacturers say NO POWER WASHING A ROOF! The typical pressure washer turned all the way down will output 500-1000 PSI of pressure, that will STILL blow granules off the shingles. Our pump Air Diaphragm Pump limits the pressure to no more than Garden Hose pressure. It cannot damage the shingles. Period
  2. Manufacturer approved cleaning solutions. Our cleaning solutions were developed by professional roof washing companies in cooperation with roofing manufacturers. They are 100% roof safe. You can soak shingles in them for months at a time without any damage.
  3. Kills Moss, Lichen, Gloeocapsa Magma CyanoBacterial Colonies and Algae…instantly. Our custom mixed cleaning solution is not available at your hardware store. It is specifically formulated for professional use. Our solution is designed to clean your roof quickly, safely and without any damage. It is safe for asphalt shingles, tile, stone and commercial membrane roofing materials. It is environmentally friendly, bio degrading to harmless salt water, which we control. Our system is designed to put the minimum amount of product on to be effective.
  4. Safety Oriented. Our roofing cleaners operate safely. We can and will install proper roof anchor systems if you do not have one and your roof pitch is too high for our temporary anchor system. Our employees are roofers who know how to move on a roof and how to utilize proper fall arrest equipment.
  5. Guaranteed work. We guarantee our work. Your roof will remain moss, lichen and G.M. free for two years after cleaning. Please ask for a copy of our warranty statement for full details.

Free quote

Call us now on  09 838 3363 or fill in the form on the right.