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Awful lead flashing in need of repair! James is back for a one-off job.
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Mastering Exterior Lead Flashing Repairs
Repairing exterior lead flashing is a task that typically involves several careful steps to ensure both the effectiveness of the repair and the safety of the person performing the work, especially considering the health hazards associated with lead. Here's a step-by-step guide to repairing exterior lead flashing:
Preparation and Safety: Before beginning, gather all necessary tools and safety equipment. This includes gloves, a respirator mask suitable for lead dust, safety goggles, and a protective suit if necessary. Set up a secure ladder or scaffolding to access the flashing safely.
Assessment: Inspect the lead flashing to determine the extent of the damage. Look for signs of wear, such as cracks, splits, or areas where the flashing has come away from the masonry or roofing material.
Cleaning the Area: Clean the area around the damaged flashing to remove any debris, moss, or dirt that could interfere with the repair. This can be done with a soft brush or a cloth. Be cautious not to create lead dust when cleaning.
Removing Loose Material: Carefully remove any loose or damaged parts of the flashing. If the flashing is cracked or has small holes, decide whether it can be repaired or needs to be replaced. Use a sharp knife or snips for cutting, being careful not to cause more damage.
Applying a Primer: Apply a primer suitable for lead and the surrounding material (if you're adhering the flashing to brickwork or roofing tiles, for example). This will help the patch or adhesive bond more effectively.
Cutting the Patch (if applicable): If a patch is needed, cut a piece of new lead flashing that is slightly larger than the damaged area. Ensure the new piece will overlap the existing flashing adequately on all sides, typically by at least 2 inches (5 cm).
Fitting the Patch: Position the new patch over the damaged area. For small holes or cracks, lead mastic or a suitable sealant can be used to fill the gaps instead of applying a new piece of lead. Ensure the patch is fully secure and that there are no gaps for water to penetrate.
Sealing and Finishing: Use a suitable sealant around the edges of the patch to ensure it is watertight. Smooth any wrinkles or bubbles to ensure a flat surface that water can run off quickly. If you use nails or screws to secure the patch, ensure these are sealed and covered to prevent leaks.
Cleaning Up: Carefully clean up the work area, ensuring that any lead scraps or dust are safely collected and disposed of according to local regulations regarding hazardous materials. Wash your hands and any exposed skin thoroughly after finishing.
Checking the Repair: After the repair, and especially after the next rain, check the area to ensure there are no leaks and that the repair is holding up as expected.
Remember, working with lead is hazardous, and proper precautions must be taken to prevent lead poisoning. This includes using personal protective equipment (PPE) and ensuring that lead dust and particles are not inhaled or ingested. If you're not experienced in working with lead or if the damage is extensive, it's advisable to hire a professional who is trained in handling lead safely.
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#lead #flashing #homeimprovement
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