Alternative method

• Careful attention to roofing and flooring details and ventilation . 
• Avoid timber to contact brick or concrete (eg use impervious seprating membrane ) .
• Careful maintenance of roofing and guttering
• Apply anti-termite solution at the beginning of construction . 
• Painting to timbers are done properly 
• Chemical treatment to all timber before construction . 
• Select timbers and sent for chemical treatment test as often as possible ( usually , 25mm all-round penetration is required ) .