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The Easy Way to Clean and Remove Lichen

Lichen causes severe damage and is extremely difficult to remove with pressure cleaning or scrubbing alone.  The lichen will begin to regrow immediately after pressure cleaning from the residue left behind.

Bio-Shield® will clean and remove all parts of the lichens.

                                                  icon check-983 Easy spray-on application

                                                  icon check-983 No Pressure Cleaning or Scrubbing

                                                  icon check-983 Bio-Shield® protects from lichen regrowth

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

The Easy Way to Remove Lichen - with Bio-Shield®

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

  • Ensure the lichen is dry before application
  • Apply the Bio-Shield to saturate the lichen and stay wet of 10 to 15 minutes.
  • Allow the lichen to dry for 1 to 2 hours

The key to successfully cleaning and removing lichen is to apply the Bio-Shield solution to saturate the lichen 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 will notice a slight colour change in most lichens once Bio-Shield is applied as it penetrates and kills the lichen.

The main reason other outdoor cleaners fail to kill lichen is the application has not saturated the growth and it is drying out to quickly.

Once the lichen has been killed it will breakdown and be washed away by rain.  If a faster clean up is required the lichen can be hosed and brushed away 3 to 4 weeks after the Bio-Shield application

A surface treated with Bio-Shield will stay clean for up to 3 years. 

Re-apply the Bio-Shield at the first sign of regrowth for a fast clean up and to keep the treated surface clean.

Bio-Shield 5 Lt Bottle LG       Jet-Stream Bottle
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What is Lichen?
Lichen is an organism composed of algae or cyanobacteria (or both) living among the filaments of a fungus in a relationship that benefits each growth. Lichen prefers alternate wet and dry conditions and will grow on nearly any exterior surface. 

 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 common surfaces that lichen grows on.
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 38 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