https://www.repairmywindowsanddoors.co.uk/redhill-guttering-and-downpipes-near-me/ Repairing Leaks From Cast Iron Downpipe Joints Leaks from cast iron downpipe joints could be a serious problem. They can cause water damage and promote the growth of mildew and mould. Fortunately the pipes can be fixed. But first you'll need to clean the pipes free of any rust or paint with a wire brush. After the pipes have been cleaned, you'll need to assess the extent of the damage. Caulking While caulking isn't a permanent fix, it's often enough to stop further damage and keep rainwater flowing. It is available in a wide variety of hardware and home improvement stores. It is used to seal gas in bricks and stones as well as metals, repair fissures and foundations and stop leaks around windows and doors. Before applying caulk remove any paint or rust that has escaped. You can employ scrapers or wire brushes to do this if necessary but be careful not to scratch or cut the pipe itself. You should also wear gloves while working with caulking, as the chemical compound could cause irritation to your skin. First prepare the area for application of caulking by cleaning it using a wire brush or scraper to get rid of any rust or debris stuck to the pipe joint. Masking tape should be placed on either side of the area for clean lines to be applied when caulking. The end of the caulk tube should be cut at 45-degree angles. Then, fill the caulk gun up with a small amount the compound. Apply it to the joints and gaps you wish to repair. When using a caulking tool, you must maintain the speed and pressure you use to apply a smooth, even bead of the material to the gaps or joints. It is recommended to wait at least six hours after applying the caulking before using the downpipe. This will allow the caulking to completely dry and create a an extremely durable seal. Although the majority of people are able to do some of the work themselves in order to maintain their gutters and downpipes it is recomm