https://www.repairmywindowsanddoors.co.uk/romford-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 encourage mould and mildew growth. Fortunately the pipes can be fixed. First, you'll need to clean the pipes of any paint or rust using a wire brush. Once the pipes are clean, you'll need to assess the extent of the damage. Caulking While caulking isn't an all-time fix, it's often enough to protect against further damage and keep the rainwater flowing. Most hardware stores and home improvement stores offer mortar caulking. It is used to seal gas in bricks, stone and metal, as well as for repairing foundation cracks and fissures in basements as well as stopping leaks around doors and windows and can be used to seal cast iron pipe joints. Before applying , clean out any loose paint or rust. You can employ a wire brush or scraper to do this however, be careful not to scratch or cut the pipe. Wear gloves when working with caulking as the chemical compound can irritate skin. First, prepare the area for the application of caulking by cleaning it with a scraper or wire brush to remove any rust or debris stuck to the pipe joint. Masking tape should be placed on either side of the space to allow clean lines to be applied when caulking. The end of the tube of caulk should be cut at 45-degree angles. Then, fill the caulk gun using a tiny amount of the compound and apply it to the gaps or joints you want to repair. It is recommended to use a caulking tool with constant speed and pressure in order to apply a uniform, smooth bead. After you've applied the caulking take at minimum six hours before you use the downpipe again. This allows the compound to completely dry and provide a an extremely durable, long-lasting seal. While most people can do little work themselves to maintain their guttering and downpipes, it's best to leave the most extensive repairs to