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  "name": "How do contractors prevent roof leaks where the new metal addition joins the old building?",
  "description": "Contractors use custom transition flashing, closure strips, and engineered water drainage paths tucked under existing panels to prevent leaks at tie-in points.",
  "url": "https://totalbuildingsystems.net/faq/how-do-contractors-prevent-roof-leaks-where-the-new-metal-addition-joins-the-old",
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      "name": "How do contractors prevent roof leaks where the new metal addition joins the old building?",
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        "text": "Proper weatherproofing relies on engineered transition flashings, rubber closure strips, and high-grade sealants specifically placed where the addition meets the existing roof and walls. Water management is critical at roof tie-ins: your contractor must account for drainage slope and ensure the new roof does not dump stormwater runoff onto the existing structure. Depending on the design, counter-flashing must be tucked under the original metal panels, and expanded valleys or gutters must be sized to handle heavy downpours without backing up under seams.",
        "description": "Contractors use custom transition flashing, closure strips, and engineered water drainage paths tucked under existing panels to prevent leaks at tie-in points."
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