Sealing a junction box : r/electrical
My local electrical supply store said they just use "duct seal," googling only found products that say they''re not for outdoor use. What''s the correct method and/or product to seal the junction box where
Sealing of wire junction boxes
Home / Sealing of wire junction boxes
Non-hardening electrical putty, also known as duct seal compound or mastic, is the preferred material for sealing wire entries directly inside the box. Waterproofing a junction box is a necessary step when installing any electrical wiring in a home, garage, or other location. Electrical penetrations are often responsible for holes in the most critical locations in your envelope, making them a prime target when your goal is to air seal your home.
