House Wash

Chemicals for house washing and pressure cleaning, dispatched from Brisbane.
Liquid chlorine (sodium hypochlorite 12.5%, 125 g/L available chlorine) is listed on its product page for cleaning contractors who pressure-clean concrete, render, roofs and cladding to remove mould, mildew, lichen and algae. Many hardware and pool chlorines are sold at 10%; this grade is 12.5%.
This collection also includes caustic soda for degreasing, citric acid for descaling and limescale, hydrochloric acid for brick cleaning and concrete etching, and phosphoric acid 85% for rust and mineral deposits. These are strong chemicals. Read each product page and Safety Data Sheet before use.
Do not mix these products with each other or with other cleaners. The phosphoric acid product page says to add acid to water, never water to acid. The hydrochloric acid page gives a brick-cleaning starting point of 1 part acid to up to 10 parts water, and tells readers to follow guidelines for safe dilution and handling. The phosphoric acid page gives a descaling starting point of 1:10 to 1:20. The liquid chlorine page gives an indicative hard-surface disinfection dilution of 1:50 to 1:100.
Dangerous Goods delivery. Liquid chlorine, caustic soda, hydrochloric acid and phosphoric acid ship as Dangerous Goods. They are delivered only in Brisbane, the Gold Coast and the Sunshine Coast, or by pickup at Windsor QLD. Gold Coast and Sunshine Coast deliveries that include Dangerous Goods are charged a $20.00 Dangerous Goods delivery fee. Citric acid is not Dangerous Goods.