How To Reseal A Garage Door ?

If you’ve noticed any dirt, rodent droppings, or water in your garage it’s likely that the problem can be traced to your garage door.

How To Reseal A Garage Door

Your garage door comes with a seal at the bottom to prevent water, dirt, and unwanted pests from entering but if this seal breaks down over time then you may notice water, dirt, or even rodents inside your garage. 

To fix this problem, you need to replace the bottom seal on your garage door. You’ll also want to check your garage door frame and make sure that it hasn’t shifted or cracked. 

To seal a garage door so it is resistant to the elements requires putting in a new seal and the weatherstrip around the door.

Adding thin weatherstrip between the door panels makes the door more airtight.

Buy Tools And Materials 

Weatherstripping seals are made out of painted wood and are used to prevent air leaks around windows and doors.

You can buy them in packs, but you can also use a hammer and nails to make them yourself. You should get caulk or glue to fix your garage door.

The garage door  needs to be cleaned before you apply any kind of adhesive to it.


How do we know how many weather strips we need to seal our garage? We measure the door’s width and multiply the result by 2. It’s a fairly simple process. 

Remove Old Seal/Install New One 

Before sanding and installing the weatherstrip seal, make sure you know how to remove old seals. Remove any old seal first by probing with a knife.

Make sure there isn’t anything stuck underneath the seal. Check the door frame to see if it needs repair. 

The old paint is easy to remove if you use a sanding block. You can also use a sander to get rid of the rest of the paint. Use wood filler to seal up the nail holes.

Once you’ve measured the sides of your garage door, you need to cut the seal to match them.

You can use a knife or a saw to cut through the seal but be careful when cutting because if you make a mistake, the seal won’t fit. 

You should also leave some wiggle room to allow for any mistakes. You can then install the seal by pushing it into place until it clicks into place.

Then, you nail the seal into the wood on the side of the garage door. 

Make sure there aren’t any gaps before you do this, if you find any, remove the nail nearest the gap and adjust the seal. Drive the last nail all the way through.

Weather Sealing

How To Reseal A Garage Door

Weather sealing your garage is an important thing to do because if there is any water inside your garage, it could cause severe damage to your house.

Garage doors need to work correctly and seal properly, and if this isn’t done, the garage door could leak.

A wooden garage door should always be sealed with a weatherstrip, otherwise, moisture could get inside the house.

Metal garage doors are much harder to seal properly, as there’s often a gap between the top of the door and the ceiling so you need to be more careful with a metal garage door. 

Garage door bottom seal is a simple device that seals the gap between the floor and the garage door.

They are made out of metal and slide into channels on the garage door. They come in different sizes and shapes to fit any gap between the floor and garage door.

Threshold Seals

Threshold seals prevent water from entering the garage. Threshold seals make sweeping easier by blocking the path of debris.

However, they can also make it difficult to clean the garage because they block access to it.

Garage doors can be dangerous if they don’t have a threshold seal installed. Threshold seals prevent the gap between door and the floor from forming, but they also prevent a trip hazard. 

To avoid these problems, use a permanent marker or chalk to mark on the floor where the door sits, then install a threshold seal.

Don’t use tape as  it may interfere with the seal. Once you’ve outlined it, lift the door, then install the seal to the garage floor. Then lower the door.

Rubber Or Vinyl Strips

These seals come in rolls and install easily with galvanized nails or screws.

The door side of the strip needs to be pressed against the door to make a good seal, as this is used to protect garages from wind and rain. 

Rubber strips are also used to seal off the garage door from the elements. You can install them yourself by cutting them to size and installing them using nails or screws.


To install the doorstop, place each piece parallel to the front of the door and press the molding up against the door. Fasten the molding to your door jamb using nails.

Doorstops should be installed perpendicular to the wall, but this isn’t always possible. In these cases, you can use a piece of spruce or pine as an alternative.

You’ll want to cut the spruce/pine into strips about 1″ wide and 3/4″ thick. Then, simply attach them to the door frame using screws.

Door Panel Weatherstripping

Door panels should be V shaped. It seals the gap between the panels. It can help seal out cold air when you close your garage door.

Weatherstripping is available as a self-adhesive roll. You just stick it onto the top or bottom edge to create an effective seal. 

When the door is shut, the panels compress the material, which forms a type of seal similar to weatherstripping found on entry doors. 


Garage doors require proper maintenance to ensure safety. When there is sun shining through your garage door, this means that your seals need replacing.

You should also consider the other parts of your garage door as well.

Seals are also very important when keeping heat inside a house. As we’ve seen there are two types of seals: caulking and glues.

Caulking is a soft material that fills the gap between the door frame and the seal. 

Glue is a hard substance that sticks the seal to the door frame. Both kinds of seals are useful for keeping heat inside a house, but caulking works better than glue because caulking doesn’t crack as easily.

In Summary

Resealing a garage door is a fairly simple process but crucial to maintain your garage and anything stored inside. Happy DIYing!