An RV Window seal can help you get comfortable inside your RV. It will keep the heat in during winter and provide proper ventilation to keep the heat out during summer. So, you must apply an RV window seal to retain the comfortable temperature inside your RV.

There are several ways to keep your RV’s window from leaking.

A window seal is an effective way to use an insulation material to the window’s frame. An RV window seal works as a weather stripping or rubber gasket that blocks any cracks between the frame and the wall, keeping your RVs’s comfortable temperature inside.


Types of RV Window Seal

rv windows

  • The Frame-form RV Window Seals

You can use this seal to block cracks between the frame and the wall. It fits into the window frame molding to create a tight seal that keeps any wind or water entering your RV. You can find this type of seal in various widths and thicknesses and come with multiple adhesives and notches. The most common type of frame-form seal is foam with adhesive on one side.

  • RV Window Crank Seals

A crank seal is typically made from a rubber material that fits around your windows housing. This type of seal is used when you frequently open and close the window to help keep any wind or water from entering your RV.

  • RV Flashing Seals

You can use this seal to connect the rubber gasket on your RV’s sliding windows into its aluminum frame. This is one of the essential seals you can do for your RV.

RV window seal will help keep the warm air inside and cold air outside during winter and prevent any wind or water from entering your RV during the summer season and transporting water out of the RV. If you have any cracks on your RV’s window, you should apply an RV window seal to keep it from leaking air or water.

Though applying a window seal is a simple task, it benefits you greatly.


How to Seal an RV Window?

You can follow the below-mentioned steps to seal an RV window for your RV’s exterior.

Clean the Surface

Before you start:

  • Get rid of all the dirt and grime on your window with a clean cloth.
  • Make sure it is scorched so that no liquid seeps through later.
  • Cover any furniture around your RV using a tarp to ensure nothing gets stained.

Applying the RV Window Seal

Get an RV window seal and pull it out of its package. Check for any adhesive on one side; remove the plastic covering over the adhesive if it has some. 

Then apply this adhesive side onto your window surface. Press down firmly to make sure the seal sticks all around your RV. If it does not, repeat this process until your window is completely covered in a good seal.

Trimming the Seal

After applying the seal:

  • Trace any outlines of your window crank with a marker on the adhesive side of the window seal.
  • Remove the window from its place and cut the seal to fit precisely around the window crank.
  • Make sure you cut it at a 45-degree angle so that the excess RV window seal does not show after you have placed it back in its place.

Apply Flashing Tape

Get flashing tape and, following your outline, wrap this tape over the edge of your adhesive to finish sealing off your window crank.

Do not narrow this seal by wrapping it down the sides of the crank; leave a little extra to fold over onto itself or cut off if needed.

Apply Tape to Windows Crank Inside Housing

After you have covered the exterior of your windows crank with flashing tape, get another piece and cover any interior gaps between your window frame and crank. This will prevent the window from getting stuck in its track during use.

Test Your Window

To make sure you sealed everything correctly:

  • Then, slide your window up and down a few times to see if it moves quickly.
  • If it is hard to move or gets stuck, check that the flashing tape is still in place and is not folded over somewhere it shouldn’t be.
  • If the tape has been removed from the window crank, remove it entirely and reapply a few inches of new flashing tape.

Reinstall Your Window

Once you have made sure that your window crank moves quickly, open up your windows and put your windows back into place, line up the bottom of your windows first, then push the top of the window into place.


How often should you seal your RV Windows?

You should seal your RV windows every few months to ensure that the air and water do not get inside. This will keep your RV neat and clean while preventing damage to your appliances or home decor due to humidity or other season changes. 

You should also re-seal your RV windows after cleaning them thoroughly with a cloth or towel. You can also apply a cleaner or any preservative on your RV windows to protect them from rusting. Even if you regularly clean your RV, keeping your windows sealed once every few months is still advisable. And inspect the glass window for cracks.

If you don’t seal your RV’s windows, they will start to leak air and water inside the vehicle. This will affect the condition of the furniture. So always remember to apply an RV window seal after cleaning all surfaces with a dry cloth. You can also use a towel that has been soaked in clean water to clean them off and then apply the RV window seal before placing the windows back in their place.

For window glass replacement or repair, you may contact Motion Window. The company is a division of Peninsula Glass that provides high-quality glass for homes and vehicles. 

So, if you need a new window or seek a window replacement, call Motion Window for assistance.