Roof Washing &
Lichen Removal
Christchurch & Queenstown
Safe, low-pressure roof washing that removes lichen, moss and algae — protecting your roof tiles and extending your roof's life. Trusted by homeowners across Canterbury and the Queenstown Lakes District.
Christchurch & Queenstown, New Zealand
Fully Insured
Public Liability
5-Star Rated
47+ Reviews
SiteSafe Registered
Certified Contractor
NZ Local Business
Christchurch & Queenstown
Safe Roof Washing That Actually Lasts
Lichen and moss on your roof are more than eyesores — they cause real damage. Our specialist system treats the root cause, not just the symptom.
Safe Low-Pressure Washing
We use a soft-wash system — never high-pressure blasting — to protect aged and modern tiles from cracking, chipping or losing their protective coating.
Kills Lichen at the Root
Our specialist biocide penetrates deep to eradicate lichen, moss and algae at the root level, not just the surface — delivering longer-lasting results.
Extends Roof Lifespan
Lichen and moss trap moisture, accelerating tile degradation. Regular professional roof washing adds years to your roof's life and protects your biggest investment.
What's Included in Our Roof Wash?
Every roof washing job is comprehensive — we treat all accessible roof surfaces and ensure every area of growth is addressed.
- Concrete and terracotta tile roofs
- Colorsteel and Zincalume metal roofing
- Lichen, moss and algae biocide treatment
- Ridge capping and hip treatment
- Valleys, gutters and flashings cleared
- Long-lasting residual treatment application
Why Choose Rise & Shine for Roof Washing in Christchurch & Queenstown?
Lichen, moss, and algae are more than just cosmetic issues on New Zealand roofs — they act like sponges, trapping moisture against the surface. For concrete or terracotta tiles, this constant dampness leads to cracking, splitting, and eventual water ingress. For metal roofs, it accelerates corrosion and rust.
At Rise & Shine, we never use high-pressure blasting on roofs. Instead, we use a specialized soft-wash system that applies biodegradable biocide treatments to kill organic growth at the spore level. This ensures that the lichen's deep root systems are completely eradicated without damaging brittle tiles or stripping protective coatings.
Our technicians are fully certified for heights and SiteSafe registered, providing a completely safe, fully insured roof washing service across Christchurch and Queenstown. Protect your structural integrity and add years of life to your roof with our long-lasting treatments.
Our Roof Washing Process
Inspection & Assessment
We inspect the roof from ground level and assess lichen coverage, tile condition and any fragile areas needing special care.
Biocide Application
Specialist lichen and moss treatment is applied to penetrate and kill organic growth at the root without damaging tile surfaces.
Gentle Wash & Rinse
Low-pressure water removes loosened growth and residue, leaving a clean, treated roof surface protected against rapid regrowth.
Where We Offer Roof Washing
Rise & Shine Water Blasting proudly services residential and commercial properties across Christchurch, Canterbury, Queenstown and the wider Lakes District.
Christchurch & Canterbury
Metropolitan coverage & surrounding towns
+ all other Canterbury regional locations
Queenstown & Lakes District
Servicing Central Otago, Wanaka & Cromwell
+ all other Lakes District & Central Otago locations
Based in Christchurch & Queenstown
We service all areas across both regions. Not sure if we cover you? Call us free on 0800 274 469
Roof Treatment Technical Standards
Strict operating procedures for surface protection
Chemical Biocide Blend
We apply biodegradable quaternary ammonium compound (benzalkonium chloride) pre-diluted to a 1.0% to 1.5% active content to kill moss and lichen spores at the root.
Pressure Calibrations
All chemical spray application is performed at 100 to 150 PSI (low pressure) to prevent tile displacement, grout washout, or metal coating abrasion.
Rainwater Collection Protection
For homes utilizing rainwater tanks, downpipes are disconnected and diverted during biocide application and only re-established after a clean wash cycle.
Debris Bagging & Flushing
Lichen clumps and moss dislodged during the pre-treatment rinse are manually collected and bagged from gutter trays before chemical washdown.
Authority Standards & Source Citations
Verified New Zealand regulatory & maintenance references
Metal Roofing Manufacturers Association NZ (MRMANZ)
Maintenance guidelines state that Colorsteel and Zincalume roofs require annual low-pressure washdown to clear environmental salts, warning that high-pressure blasting voids roofing material warranties.
Concrete Tile Manufacturers Association NZ (CTMANZ)
Warns that high-pressure water blasting strips the protective top-coat glaze and aggregate granules from tiles, accelerating concrete porosity.
WorkSafe New Zealand
Guidelines for safe working on roofs mandate certified harness anchorages, edge-protection systems, or scaffolding where working at height risk controls are required.
Roof Washing — Frequently Asked Questions
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