How To Seal Garage Door Sides And Keep Out Drafts, Rain, And Pests
How To Seal Garage Door Sides And Keep Out Drafts, Rain, And Pests If you have ever walked into your garage and felt a cold breeze coming in from the sides of your door, you are not imagining things. Gaps along the sides of a garage door are one of the most common and overlooked problems homeowners deal with. These gaps let in drafts, rainwater, insects, rodents, and even dust that slowly builds up over time. The good news is that sealing the sides of your garage door is a manageable project. You do not need to be a contractor to get it done, but you do need to understand what you are working with and why it matters. Why Sealing Your Garage Door Sides Actually Matters Most people think of a garage as just a place to park a car or store boxes. But if your garage is attached to your home, it shares walls, air, and sometimes pests with your living space. A poorly sealed garage door can drive up your energy bills, let humidity in during Texas summers, and become an open invitation for critters looking for shelter. In The Woodlands, Texas, the weather can shift quickly. You might deal with heavy rain and flooding one week and dry, windy conditions the next. Without a proper side seal, your garage acts like a funnel for whatever the weather decides to throw your way. Beyond comfort and energy savings, there is also the issue of structural damage. Water that sneaks in through the sides of your garage door can damage flooring, walls, and anything stored inside. Over months and years, that kind of moisture exposure adds up. Understanding How Garage Door Side Seals Work Before you can fix the problem, it helps to know what you are dealing with. A garage door side seal, also called a door stop weatherstrip, is the strip of material that runs vertically along both sides of your garage door frame. Its job is to create a tight seal between the door and the door jamb when the door is closed. These seals are usually made of rubber, vinyl, or a combination of both. They flex slightly to accommodate the movement of the door while still blocking gaps. Over time, they crack, compress, or pull away from the frame. Common Signs Your Side Seals Need Replacing You might not notice the problem right away, but there are clear warning signs to watch for: If any of these sound familiar, your garage door side seals are likely the culprit or at least part of the problem. What You Need Before You Start Sealing your garage door sides is a relatively straightforward DIY project, but going in prepared makes the whole process faster and cleaner. Here is what you will need: Most weatherstrip kits designed for garage doors come with everything you need, including the hardware. Look for kits specifically labeled for garage door side seals rather than standard door or window weatherstripping, which may not be designed to handle the weight and movement of a garage door. How To Seal Garage Door Sides: Step-By-Step Step 1: Inspect the Current Seals and Frame Start with a thorough inspection. Close your garage door completely and look at the sides from both inside and outside. Check for gaps, cracks, or areas where the existing seal has pulled away from the frame. Also, look at the door jamb itself. If the wood is rotted, warped, or damaged, you may need to address that before installing a new seal. A new seal on a broken frame will not give you the result you are looking for. Step 2: Remove the Old Weatherstrip Use your flat pry bar to gently remove the old seal. Be careful not to damage the door jamb in the process. If the seal is nailed or stapled in, work slowly to pull it away cleanly. Once the old seal is removed, clean the surface. Old adhesive, dirt, or debris on the door frame will prevent the new seal from sitting flush and sealing properly. Step 3: Measure and Cut the New Seal Measure the height of your garage door from top to bottom on each side. Cut your new weatherstrip to match. It is better to cut it slightly long and trim the excess than to cut it too short. Most side seals come with a fin or lip that presses against the door to create the seal. Make sure you understand the orientation before you start attaching it. Step 4: Attach the New Seal Position the new seal along the door jamb so that the fin or flexible lip presses lightly against the closed door. It should not push so hard that it strains the door opener or causes the door to stick, but it needs to make solid contact to block drafts and rain. Use the nails or staples to secure the seal, spacing them every six to eight inches for a consistent hold. Work from the top down to keep the seal aligned as you go. Step 5: Check the Fit and Make Adjustments Once both sides are done, close the door and check for any remaining gaps. Run your hand along the edges to feel for drafts. If you notice any spots where the seal is not making contact, you may need to reposition that section or add a secondary bead of caulk along the outer edge of the frame. Do Not Forget the Other Parts of Your Garage Door Seal Sealing the sides is important, but your garage door has three other contact points that deserve attention, too. The Bottom Seal The bottom seal sits along the base of the garage door and contacts the floor when the door closes. It is the first line of defense against rain, pests, and cold air. If it is cracked or flattened, replace it along with the side seals. The Top Seal The top of the garage door also needs a seal