https://www.repairmywindowsanddoors.co.uk/waltham-abbey-guttering-and-downpipes-near-me/ Repairing Leaks From Cast Iron Downpipe Joints Leaks at the cast iron joints of downpipes can be a problem. They can lead to water damage and promote the growth of mould and mildew. Fortunately they can be fixed. However, first you'll have to cleanse the pipes of any rust or paint using a wire brush. Once the pipes have been cleaned, you'll need to determine the extent and type of damage. Caulking 's not permanent however it can be used to prevent further destruction and help keep rainwater flowing. It is available in a wide variety of hardware and home improvement stores. It is used to seal gas in bricks, stone and metal, repairing fissures in basements and foundations as well as stopping leaks around doors and windows and can be used to seal cast iron pipe joints. Before applying caulk, remove any paint or rust that has escaped. If necessary, you can employ wire brushes or scrapers to remove the paint or rust. Be careful not to cut or scratch the pipe. Wear gloves when working with caulking because the chemical compound may cause irritation to the skin. To prepare the area for caulk application, use a wire scraper or wire brush to remove any rust or debris from the pipe joint. Masking tape should be placed on either side of the space to allow clear lines to be used when caulking. The tip of the caulk tube should be cut at 45-degree angles. Then you can fill the caulk gun up with a small amount the compound. Apply it to the gaps and joints you wish to repair. You should use a caulking tool with consistent speed and pressure to apply an even, smooth bead. Once you've applied the caulking take at least six hours before using the downpipe again. This will allow the caulking to completely dry and form a a durable seal. Although most people are able to complete some of the work themselves in order to maintain their gutters and downpipes, it is best to leave more substantial repairs