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Summary: Window, door, and siding sealant should be applied to ensure a tight seal so no air can get into the house. Learn how to caulk the joints of a garage entry door in this free home improvement video.
"Hi, this is Jon and in this clip we will be caulking our joints. For this step I'm going to be using a window, door and siding type sealant. Now these come in tubes that fit into caulking guns, which allow you to apply it to your surface. If you cut the tip at a about a forty-five degree angle, it makes it a lot easier when you are installing the product. Now on our door, what we want to seal, is all areas where the door, our new door, meets the wall. So we are going to go all the way around our entire door and this is going to help form a tight seal so that no air or moisture gets in. Now this particular product does have a dark color to it but it is paintable and since our door frame and the wall are going to be the same color, that's not going to matter. Once you get a good bead on there, you are going to take your finger and smooth it out. And you are just going to continue that procedure all around your door."
eHow Article: Caulking a Garage Entry Door