How to Seal the Side of a Garage Door

Cold air, dust, insects, and noise are all known to enter through garage doors. However, if you're willing to put in the time and work, you can make them completely impermeable. The trick, you see, is to pay attention to the entire door, not just the bottom edge. I'll teach you how to strengthen your garage door by sealing the top and sides today.

Even though we'll concentrate on the garage door's most ignored parts, you shouldn't focus just on them. That's the problem with garage doors. There's plenty of room for air to flow via the bottom fissures or even between the door's horizontal slats.

Fortunately, as long as you have a good game plan, sealing the garage door should be simple. That happens to be something I can help with. But first, let's speak about the greatest way to keep a draft from entering from the sides.


Let's skip over assessing whether or not you need to caulk the sides of your garage door. To put it another way, if you can fit a pencil into the space between your garage door and the door frame, you've got a problem.

But, as I previously stated, repairing it will be simple if you know what you're doing. The following are the steps you must take:

  1. Gather All Of The Necessary Supplies.

The list of items you'll need to get your hands on before you start working on the garage door should always be the first thing we talk about. It is relatively short in this scenario. • Your choice of weatherstripping seal — they usually come in rolls and are often manufactured to look like painted wood • A hammer, pneumatic stapler, or drill • Nails or screws (typically included with the purchase of weatherstripping kits)

You'll also need something to clean the jamb if you don't want to use nails or screws. If you're going to use adhesive or sealer, you'll need to start from scratch.

Even if you nailed the seal into the jamb, caulking is a great way to finish things up. But I'm getting ahead of myself; we can't discuss finishing touches before we've even started.

For the time being, only measure the sides of your garage. The length of the seal you'll need is the sum of the door's height (multiplied by two) and breadth. Let's see what you can do about the old seals while you're waiting for them to arrive.

  1. Remove The Existing Weatherstripping

If your current vinyl seal has degraded over time, you'll need to remove it before replacing it. You might need a few additional tools to accomplish this. If you don't have a crowbar, you can cut away the old caulk and lift the seal using a sturdy kitchen knife. Simply push it beneath the vinyl strip until the first nail is felt, then twist to lilt it.

You alternately remove the top and side seals. Examine the framing of the door. It's possible that you damaged the jamb in the process. particularly if the seals were glued on But don't worry; that's a simple fix.

Sand and complete the jamb before moving on to the next step. Alternatively, if the operation of removing the seals caused damage to the plaster, repair the scuffs with the necessary equipment. Finally, cover up any old nail holes that will be exposed once the new seals are installed with wood nutty.

  1. Prepare The Seal For Installation

Once you have a clean work surface. Start prepping the seals now. First, With a retractable measuring tape, measure the sides of the garage door once more. It's never a bad idea to double-check. If you have a utility knife or a circular saw in your workshop, cut the seal down to size.

Garage seals are typically sold in rolls, as previously stated. The product I linked to above is a 7-foot version. I've also come across 30-loot ones. Keep in mind that you'll need to cut two or three pieces from the merchandise you receive. depending on the condition of your existing seals It should also be long enough to accommodate minor errors on your part.

You should cut and install the top first if you're replacing the top and both sides. Keep it in mind while you go through the tasks on my checklist. As this video will demonstrate. That is the most appropriate sequence. because you'll be able to adjust the side seals to make them precisely lighted against the top one

Finally, before applying the seals to the door jamb. Your nails should go through the thicker part of the strips. The nails should be about 16 inches apart and an inch and a half long.

Tap some of the nails to temporarily secure the seal when you place them flush against the door. Don't let them get all the way into the jamb. But not yet – you'll need to double-check their positioning first.

  1. Inspect And Nail The Seal Placement

The seals should be loosely fastened onto the garage door frame on the outside at this time. Now all you have to do is double-check that they're in the appropriate place.

Put your hands on the garage door and gently push it open. Shift your position and look for any gaps between the seal and the door.

Remove the nearest nail from the jamb and push the seal closer to the door if you find any. Shake the door once more. to verify the new location

This will ensure that your seals are impregnable even in the event of a windstorm. So, once you've found the perfect position for the seals, sink your nails completely into them. Remember to attach the top first, followed by the sides.

  1. CAULK THE GAPS II You attached the vinyl seals with nails or screws. There may be little gaps between them and the jamb. Despite their apparently insignificant size. They may render all of your efforts to seal the garage door's sides ineffective.

Fortunately, there is a simple solution to improve your chances of success: a little sealant.

You could definitely get away with using a basic silicone sealant in a tube if you don't want to go all out with a caulking gun. Whichever applicator you decide on. It should run down the border of the door frame and the seal. Disposable gloves are recommended. so that you may smooth down the sealant bead with a linger This will also aid the sealant in plugging any cracks that may have enabled air to enter and exit the garage.

Of course, if the seals have adhered to the jamb with glue. You are not required to complete this step. However, as you may have anticipated. That strategy does not appeal to me. It simply makes removing the vinyl more difficult when the time comes. As a result, you'll need to repair the damage before installing the new seals.

Ultimately. More labor for you if you use sealant too heavily. It's better to keep it on the vinyl strip's edge.


Your garage may become as peaceful as any other area in your home with only a few tweaks. Remember, though. Side seals are merely one factor to consider. If you want to thoroughly seal your door. This guide will assist you in filling in the blanks.

You may also wish to use FALV curtains to thicken the door from the inside or utilize one of the other garage soundproofing solutions. The precautions you take will be determined by how you use your garage.

If you simply want to use your power tools in peace, for example. Ensure that the noise does not spread. If you want to watch movies or play games, though. You might want to consider improving the garage's acoustics. not merely keep sounds from entering or leaving


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