CHRISTMAS & NEW YEAR : Please note we will be closed for Christmas & New Year break, from 12 noon Fri 19th Dec , until 9am Mon 5th Jan. Orders can still be placed, but they will not be dispatched until we're back on Monday 5th Jan 2026. ORDER DEADLINE FOR DELIVERY BEFORE CHRISTMAS : 2pm THURSDAY 18th DECEMBER

COLLECT ONLY FROM STOCKPORT.
THIS IS A RESTRICTED PRODUCT - SEE DETAILS AT FOOT OF PAGE.

Centurywise CW4 algaecide has been specially formulated for the general control and removal of moss, mould, fungi, lichen, and algal blooms from walls, tiles, slates, patios, and general hard sufaces.
Product can also be used internally to remove damp marks from walls prior to painting or re-decorating.
 
APPLICATION
 
Apply full strength as supplied by brush or spray. For best results allow time for product to penetrate affected area . Scrape, brush or preferably power wash treated area. It is then usual for a second application to be applied to ensure all spores are killed, and to eradicate new growth.
 
APPLICATION RATES
 
Degree of absorption depends on the porosity of the substrate. As a general guide one litre of CW4 will cover approx. 10 sq. mtrs. on smooth faced stock brick , down to approx. 2 sq.mtrs. on rough absorbent masonry.
 
CAUTION
 
Wear suitable gloves and eye/face protection.
Avoid excessive skin contact.
 
Portland stone, limestones, tarmac : Product will stain some limestone substrates, and will occasionally discolour tarmac..
Whatever the substrate ALWAYS TRY A SMALL SAMPLE AREA FIRST. 
 
* With the exception of CW7, CW21, CW23 & CW31 Centurywise Ltd will only sell chemicals to bonafide cleaning/restoration companies, and related tradespeople. New customers whose details cannot be found on the internet must contact us first before placing an order.
 
Read CW4 Health & Safety sheets before using this product.... click on link below.....

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CW4 Algaecide - 25lts - Collect only

  • Product Code: CW4
  • Availability: 12
  • £84.00

  • Incl Tax: £100.80