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If you can’t find the cause of a leak, wait for dry weather and ask a friend to help you do a water test. To do this, one person goes onto the roof with a garden hose; the other person goes inside the attic with a bucket and a strong light.
The person in the attic watches carefully while the one on the roof floods the roof with the hose, starting at the eaves and slowly working uproof until the leak appears in the attic. Once the leak is found, push a nail up through the hole to mark its location for rooftop repair.
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