What is Window Caulking and How to Caulk Window?

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Window caulking is one of the simple and easiest way to improve the efficiency of the window. Window caulking is the process of sealing windows with a flexible material (Latex or silicon-based material) called caulk. The caulk is also called as a sealant. The best way to seal window is window caulking. The purpose of the window caulking is to fill the gaps and cracks that allow air leaks or let rain water in.

Caulking is not an easy process, especially if it’s your first-time window caulking. Here we give you steps for the properly applying caulk to the window frame.

Window Caulking Test:

0504170007-01-Window-Caulking-Test
Courtesy - DIY
Also Read: All You Need to Know About Window

First, you can do window caulking test for checking of air leaks. For window caulking test you will need two people where one person will stand inside, and another person will stand outside the window. Go outside and stand in front of the window and you will need a hair dryer and an extension cord or battery operated dryer. Meanwhile, have someone standing inside the home holding a lighted candle near the window. Then turn on the hair dryer and hold it near the window opposite the candle inside. If the flame flickers because of the air from the dryer, then you will know that the window needs caulking!

Weather for Window Caulking:

The dry season is the best time for window caulking when there is the least amount of moisture. In this season sealant set properly and easily adhere when the temperature is 45 degrees or more. In snowy or rainy condition caulking of window is not recommended as otherwise, caulk will not stick properly.

Buy the Correct Caulk:

Buying of correct caulk is your first and important step for window caulking. For window caulking latex caulks or silicone caulks are used. For residential windows, silicon is ideal, because it is flexible, waterproof and it can stand with extreme temperature and weather condition. Both latex and silicon-based caulk have own different advantages and disadvantages depending on what benefits you are looking for your caulk to provide.

Tools and Material:

  • Caulk gun
  • Caulk – Latex or Silicon-based
  • Putty knife or scraper
  • Paint brush
  • Plastic Spoon
  • Sponges or caulk remover

So get ready with available tools for applying window caulking.

Step: 1 – Remove Old Caulk:

0504170007-02-Remove-Old-Caulk
Courtesy - DIY

Remove old caulk, grime and debris from the window frame with scrapper or putty knife. You cannot apply caulk over old caulk because this will affect the efficiency of the new caulk.

After removing all the caulk, wipe down with a dampened sponge or caulk remover. Dry everything with a dry cloth. Then finally brush off any remaining residue, dirt or debris from the window sill and edges with a bristle brush.

Step: 2 – Cut the Caulk Tube:

0504170007-03-Cut-the-Caulk-Tube
Courtesy - Caulkyourhome

Place the caulk tube into the caulk gun. Press the trigger of the gun until the caulk tube is secured. Cut the tip of caulking tube at 45-degree angle (1/4inch) for the desired bead size. A bead is the thickness of caulk line that you are adhering to the window frame.

Note: When you load and use a caulk gun, and caulk tube carefully read all instructions.

Optional: Just apply painter’s tape above and below window areas where you will be caulking, to get straight, clean lines and protect the surrounding material from the caulk.

0504170007-04-Painter-Tape
Courtesy - angieslist

Step: 3 – Start Caulking the Window:

0504170007-05-Caulk-the-Window
Courtesy - Flickr

Hold the caulk gun at a 45-degree angle and seal the entire strip in one continuous movement & keep an even pressure on the trigger. As you go, this will spread the caulk evenly. Be sure that all cracks fill up with caulking. The caulk gun is easily available in a hardware shop.

Step: 4 – Smooth the Caulk:

0504170007-06-Smooth-the-Caulk
Courtesy - Angieslist

After applying caulk, smoothen or clean the sealant with your putty knife or a wet finger or plastic spoon or craft stick. It is necessary for removing excess caulk and bubbles.

Flatten the bead using a wet finger to smoothen the caulk and push it into the seam or crack after you apply each line.

After finishing window caulking works, remove painter’s tape while caulk is wet.

Step: 5 – Clean Up:

Once all of the window caulking is completed, place the cap back on your caulk tube. Then wipe away any caulk remaining on the window, your hands, gun or any other place before it dries. Dried caulk is hard to remove from any surface. So keep a rag or clean cloth to remove any messes that they happen.

Also Read: Window Cleaning: How to Make Task Easy

Step: 6 – Let Caulking Dry:

Now you have completed window caulking. Give time to dry window caulking for 24 hours. You cannot touch caulk when it is wet because it will leave fingerprints and dent in the caulk.

After you finish window caulking work, now it is time to enjoy freshly caulking window. Applying caulk is not limited to the window, you can also apply caulk to the kitchen countertop, doors, sinks and showers. For internal and external areas of the house different types of caulk will be necessary. Properly applying caulk is a simple way to keep your window well maintained!

0504170007-Window-Caulking-Complete
Courtesy - energy.gov

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