1. A good waterproof adhesive should be used in addition to fixing screws. 2. And I cannot imagine there are not any waterproof adhesives around. 3. If the work will be exposed to the elements, a waterproof resorcinal adhesive is a good choice. 4. Invented by the military during WWII to keep ammunition boxes dry, it was a khaki-colored cloth mesh tape with a rubber-based waterproof adhesive. |
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