If your gutters show signs of damage and asbestos exposure, it is important to remove and replace them. This is most likely in houses built before 1980 with cement roofs. If your gutters are decades old, you will want to check for asbestos. Mostly, asbestos is found in small areas like attics, crawlspaces, or the floors and ceilings in one room. That is why many licensed asbestos removalists charge $5 to $20 per sq.ft., although the price can go as high as $150 per sq.ft. For more info in regards to bio.Rogstecnologia.com.br check out the web site.