cart Shopping Cart SHOPPING CART
 Wide Delivery
icon delivery
Unconditionally Guaranteed to Work icon check

Bio-Shield® Roof Cleaning

Lichen, moss and algae cause severe damage to the protective factory coatings on roofs.
These growths are difficult to remove with water blast cleaning alone. 
The lichen will begin to regrow immediately after pressure cleaning from the residue left behind.

Bio-Shield® will clean and remove all lichen moss and algae from roofs without water blasting.
                    icon check-983 Easy spray-on application

                                                  icon check-983 Cost Effective - No Water Blasting required.

                                     icon check-983 Bio-Shield® protects from regrowth

  Lichen on Colourbond - Bio-Shield      Lichen on Colourteel Industrial Roof Bio-Shield     Decrabond Lichen Damage

The Easy Way to Clean and Protect Any Roof with Bio-Shield®

Follow these 3 simple steps to ensure a complete kill and removal of the lichen, moss and algae, and long lasting protection

  • Ensure the roof is dry before application
  • Apply the Bio-Shield to saturate the growths
  • On Coloursteel or Clay Tiles, apply a 2nd lighter coat after 10 to 15 minutes to re-wet the surface.

The key to successfully cleaning a roof is to apply the Bio-Shield solution to saturate the lichen, moss and algae through to the base of the growths, and ensuring it does not dry out to quickly. Aim to allow drying over 10 to 15 minutes to ensure the Bio-Shield gives a good kill.  Application on a cloudy day or early morning will assist.  You may notice a slight, temporary colour change as the Bio-Shield takes effect.

Clean up is effected by weather action as wind and rain remove the dead growths.  This cleaning process can take as little as 3 months on a Monier tile roof, or up to 12 months on a heavily infested Coloursteel roof, and once clean, Bio-Shield can keep a roof clean for up to 3 years. 

To maintain a treated roof, re-apply the Bio-Shield at the first sign of regrowth or every 2 to 3 years, for a fast clean up and to keep the roof surface clean.
Bio-Shield 5 Lt Bottle LG       Jet-Stream Bottle
                btn buy      btn contact      btn more

 hi had reservations about bioshield, having not used the product before.
main reason for buying was you guaranteed it would not harm my clients coloursteel roof.
well the product did not harm the roof and did kill the lichen over time and the roof looks great
nice product guys, will recommend to my other clients

Ric - Whangarei. March 2017
           Specific Application Instructions for Cleaning Roofs
Discounts, special offers, new arrivals
Bio-Shield is a New Zealand owned company based in Auckland.
I have personally developed and used Bio-Shield for over 35 years to successfully remove moss, algae and lichen from just about every exterior surface on domestic, commercial and industrial properties. 
The same high quality product is now available for DIY and commercial use on homes and businesses throughout New Zealand.
We are committed to supplying our customers the best outdoor cleaning product and services at the best price, complimented with the best technical advice in New Zealand.

7 Days - 9am to 5pm
NZ :   0800 800 127 
AU :  1800 236 810
FAQs - Ask Andy®
Instructions For Use