Roof Cleaning & Treatments in Wellington

The RoofShield™ Treatment System is our premium two-visit system designed to remove existing moss, mould, and lichen, with a follow-up call and a 12-month no new growth guarantee. A standard Roof Treatment is a single preventative application designed to stop new growth from establishing — ideal for maintenance or roofs with minimal existing growth.

Roof treatment is a preventative application designed to stop new growth from establishing on your roof. Roof washing physically removes existing dust, dirt, salt, moss, mould, and lichen from the surface. Treatment is for prevention, washing is for removal.

RoofShield™ Treatment System treatments typically provide protection for 12+ months. A standard Roof Treatment may need reapplication sooner depending on conditions. Roof washing can be done annually or as needed.

Yes, all our treatment and washing methods are safe for all types of roofing materials. We use gentle, professional techniques that clean without causing damage.

Moss, algae, and lichen thrive in humid, shaded areas. They can damage your roof and reduce its lifespan. Our treatments kill existing growth and slow future re-colonisation.

A roof treatment typically takes 1–2 hours, while a roof wash takes 4–12 hours depending on roof size and condition. The RoofShield™ Treatment System involves two separate visits. We’ll provide a more accurate estimate during our initial assessment.

The RoofShield™ Treatment System guarantee covers no new growth for 12 months from the date of the second treatment visit. If new growth appears within this period, we’ll provide a free booster treatment. It does not cover areas outside the original treatment scope, or the gradual removal of existing dead organisms (which occurs naturally over time). Full terms are available on our RoofShield Guarantee page.