The most common roofing used on flat roofs or low slope roofs is BUR, also known as built up roofing. Asphalt is melted onto the roof using a roofing kettle with a mopping application, creating an impermeable roof—important for the rain-drenched times in Florida. When properly installed and maintained, a BUR roof can last about 20 years. The cost is only slightly more than traditional tar and gravel but gives superior protection from the elements that cause a normal roofs to deteriorate.
Flat roofs or low slope roofs create unique maintenance problems. Many flat roofs tend to collect water and debris due to poor design. The roof structure may tend to buckle or have low spots in many residential and commercial roofs. It is very important to understand, when you have a flat roof, that these roofs will collect water and will pond. Most clients decide to just re-roof, without adding the much needed slight design pitch, which minimizes the roof from ponding. Traditionally tapering or sloping the roof is about 30%-50% higher than a normal built up roof (BUR).
This may cost you more money up front, yet will save you tons of headaches in the long run and create a long life expectancy for your roof. Its imperative that you understand how important it is to pitch your flat roofs, the slight slop, when added, creates the slight movement of water down the roof and off the eve of your home. In tern, minimizing the chances of ponding water. Most flat roofs, if not pitched, have excessive ponding and may damage the roofing materials within the first 3 to 5 years. Keeping flat roofs dry and free of debris can add many valuable years to your flat roofs life. We believe in making sure that all flat roofs are done properly in order to save you the headache a flat roof may bring, yet without paying to have the additional slope added, your flat roof will remain subject to the previous conditions its suffered before re-roofing. When in doubt, please ask your roofing contractor for a quote on tapering your flat roof in order to save money in the long run.