Deal of the month – October 2018 Monthly deal for October 2018 is $100 off discount for any waterproofing project for our customers in Mississauga. This special promotional offer includes interior and exterior waterproofing work. Please note:Our special promotion monthly deal is a scheduled service available for customers in Mississauga only. It is applies to waterproofing projects of Residential properties only. Please call us for full details and to answer any questions you may have.