https://www.repairmywindowsanddoors.co.uk/cheshunt-guttering-and-downpipes-near-me/ Repairing Leaks From Cast Iron Downpipe Joints Leaks at the cast-iron joints of downpipes can cause a source of concern. They can cause water damage and encourage mold and mildew growth. Fortunately they are repairable. First, you'll need to cleanse the pipes of any rust or paint with wire brushes. Once the pipes have been cleaned, you will need to determine the extent and nature of damage. Caulking Caulking isn't permanent It can, however, be used to prevent further damage and keep rainwater flowing. Most hardware stores and home improvement stores carry mortar caulking. It is used to seal gas leaks in bricks, stones, and metals, repair fissures and foundations and stop leaks around windows and doors. When you use caulking, be sure to remove any loose paint or rust from the area before applying the new sealant. If needed, you can employ a wire brush or scraper to remove the paint or rust. Be careful not to scratch or cut the pipe. You should also wear gloves while working with caulking because the chemical compound can cause irritation to your skin. First prepare the area for application of caulking by cleaning it using a scraper or wire brush to remove any debris or rust that's stuck to the pipe joint. Masking can be placed on either side of the joint to ensure clear lines when you apply the caulk, and the edge of the caulk tube should be cut at a 45-degree angle. Then, fill the caulk gun up with a small amount the compound. Apply it to the gaps and joints you wish to repair. It is recommended to use a caulking tool with consistent speed and pressure to apply a uniform, smooth bead. Once you've applied the caulking wait at minimum six hours before you use the downpipe once more. This allows the compound to fully dry and create a the strongest, longest-lasting seal. While many people can do a small amount of work on their own to maintain their guttering and downpipes, it's best to l