In almost all instances, when exterior lighting is installed, the way it is sealed to the wall of the home is with silicone caulk. Silicone caulk is used because it is waterproof, has a strong adhesion to a variety of surfaces, and is virtually indestructible!
The two main types that are recommended by most people are an acrylic based caulking and a polyurethane based caulking. These both have different characteristics, which makes them suitable for different objectives.
Exterior Caulking (4K) Residential
How to Caulk Around an Exterior Light Fixture : Caulking Tips
How to Install an Outdoor Light Fixture – The Right Way
Frequently Asked Questions
Do you need to caulk outdoor light fixtures?
Rain will often find its way into a wall if the exterior light fixture is not properly caulked. Therefore, proper caulking will help prevent water from entering into a wall; helping prevent damage and mold.
How do you caulk an outdoor light fixture?
0:241:45How to Caulk Around an Exterior Light Fixture : Caulking Tips - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe first thing you want to do is cut the end of the tube of caulk off about a 45 degree angle. WithMoreThe first thing you want to do is cut the end of the tube of caulk off about a 45 degree angle. With about a quarter inch hole.
What kind of caulk to use on outdoor lights?
Choose a silicone caulk for this job; it's water-resistant and won't crumble, crack or shrink. Clean the area around the light with a damp cloth. Like paint, caulk is most effective when it's applied to a clean surface. Set up your work area around the outdoor light.
What kind of caulk to use around bathroom sink?
Use pure silicone for sealing around plumbing fixtures, such as sinks, toilets, and faucets, and for any caulk joints on the tile in wet areas. It's also a general-purpose sealant and waterproofer for things like holes in exterior walls, sealing around pipe and wiring penetrations, and filling gaps between exposed materials...
Can you use exterior caulk on inside walls?
Exterior Caulks are different than the ones used inside the home, they are used mostly outside and are stronger. You can use exterior caulk in not only on gaps and holes in cement in your floors and walls, but also on pipes, window sills, doors, wooden floors, exterior tiles, and decorative ceiling installations.