Vertical Challenge has been window cleaning Quality Private Homes and Estates on the Gold Coast and Brisbane these past 25 years. Our friendly and polite window cleaners exercise the highest standards and show respect both for your privacy and home. The greatest of care is taken in protecting the interior of your home. Our employees have been with us for many years and are of excellent proven character. We have many satisfied customers that will attest to our overall good performance and quality of workmanship.