All you need to do is line waterproof caulk around the edges of the window before inserting it into the door.
How to install garage door window.
Line each side of the window with caulk and then fit the window in place.
Fit the inside frame in place and screw the two sides back together.
This gives them height without making it hard to see outside.
Instructional video for changing an insulated garage door window.
Garage door window replacement on wooden doors replacing the windows in a wood door is also an easy process.
Remove the screws from the inside of the frame.
This can be done using a sharp edge such as a putty knife.
With someone holding the outside window frame reinsert the screws into the inside retainer securing the glass.
Placing windows at the top panel adds splendor to the door and allows more light into the garage while giving you some privacy.
Instructional video for changing an insulated garage door window.
Insert the new glass panes.
Have a partner hold the frame on the outside of the door in place until the job is done.
With someone holding the outside window frame remove screws from the inside retainer.
If you prefer to have a view of the outside of your garage opt to place the windows in the third panel from the bottom.
Any residue caulk should be wiped away using a rag.
Set the new pane in place.
Step 1 determine the measurements of the window you want to install.
Remove the old pane and dispose of it safely.
Remove the old window and obtain a replacement.
Carefully remove any broken or old glass.
Start by removing the wooden frame that holds the window in.
Pull the inside retainer out of the door.
Without this the elements will be able to enter the garage through the window.
Add 1 2 inch around for shims and insulation i e a total of 1 inch to both the vertical and horizontal dimensions to get the size of your window frame.