Purplestrike is a biodegradable biocide engineered to selectively eliminate moss, algae, lichen, and bacteria from all exterior surfaces

How to Remove Moss, Mould & Lichen from Roofs, Concrete and Exterior Surfaces

Purple Strike makes removing moss, mould and lichen simple. Our spray-and-leave formula is designed to work over time, breaking down organic growth so it can be naturally washed away by rain and weather.

Whether you are treating a roof, driveway, path, fence or exterior wall, Purple Strike can be applied using a hose-on applicator, garden sprayer or professional spray system. Once applied, the solution gets to work immediately, targeting the growth at the root.

Most surfaces begin to show improvement within weeks, with continued cleaning over time as the dead growth naturally breaks down and washes away.

Watch the videos below to see how to apply Purple Strike correctly using our different product sizes and application methods.

Hose on Instructions

5L & 10L Instructions

  • The Easy Way to Clean and Protect Your Roof with Purple Strike

    Maintaining your roof doesn’t need to involve harsh cleaning methods. Purple Strike provides a simple spray-and-leave solution designed to treat moss, mould and lichen safely and effectively.

  • 1. Apply to a dry roof surface

    Ensure the surface is dry and free from loose debris before applying the product evenly across affected areas.

    2. Allow time for the treatment to work

    Purple Strike continues working after application. Over time, rain and weather will gradually remove the dead organic

    growth.

Explore other Purple Strike How to Guides

  • Roof Cleaning

    Clean and maintain your roof without the risk of water blasting. PurpleStrike is the easiest and most affordable way to eliminate moss, algae, and lichen while keeping your roof safe from abrasive damage.

    View guide 

  • COMMERCIAL 
& CONTRACTOR SUPPLY

    Engineered for maximum efficacy, PurpleStrike provides a professional-grade, self-cleaning method to selectively target biological infestations on any exterior surface, ensuring long-term protection

    View guide