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Seal Utility Penetrations and Metal Flashing

5:14
8:46
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At 5:14 in

What to Caulk on the Exterior of a New Construction Home | Caulking Tips for a Weatherproof Finish

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What happens here

Continue the caulking process by focusing on utility lines, electrical boxes, and any metal flashing. Apply caulk meticulously around the perimeter of all exterior utility installations, such as electrical meter boxes, electrical conduits, downspouts, and other pipe penetrations, where they meet the siding. Ensure a watertight seal to prevent moisture from seeping behind these fixtures and into the wall cavity. Similarly, caulk along the edges of drip metal flashing, especially where it meets other surfaces. The presenter notes areas where previous caulk had failed or washed off, which he attributes to application during freezing or wet conditions. This emphasizes the importance of applying caulk in dry, moderate temperatures to allow for proper adhesion and curing. Use a gloved finger to tool and smooth the caulk bead for a more effective and aesthetically pleasing seal.

Goal: Caulk around all exterior utility lines, electrical boxes, and drip metal to create a robust, waterproof barrier against moisture intrusion.

Tools and materials

  • Big Stretch caulk
  • Caulk gun
  • Gloves
  • Ladder or stepladder
  • Rag or paper towels

What they say

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and sponge caulk everything. So, walk around this side and we'll show you what we got going on on this side. Um, high side right here. I'm going to look at the windows. This starts getting pretty dang sloppy right here. Um, here's hole right here that was missed. Looking around window trim. This starts to get man unfortunately pretty dang messy. Um, and I'm not sure like, you know, how well the paint job's going to hide this disastrous mess right there. And I'm not sure how much better I can make that. We've got a seam right here. It looks like there's definitely if the house wasn't going to be dark, you know, some of these pin holes and stuff would be showing up. I'm going to try to like, you know, coaul some of these things that I can actually see that you won't like see due to the color of the house. But if this house was painted white, this would actually look like like really bad. Right here, we can see along here some holes that need to be filled right there. Um, we got seam, you know, they missed the seam right there where the it overlaps. got a saw cut in the trim board, you know, that wasn't cocked over right there. So, this right here, you know, this is um the carpenters installed the door jamb. This door jamb hasn't been cockked yet. So, this is going to need to be cockked right here. Due to the winter, uh water be before the down spouts and gutters were put on. Water was down here splashing up here. You can see it like absolutely destroyed the door, too. But this all the primer, it just wore the primer right off. So, we're gonna have to sand that and uh reprime that. Um that fill uh spackle um and coaul that. I'll give it

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