Yes, caulking windows is worth it. Because moisture and air leaks are big sources of common window problems, caulking can be an inexpensive and easy way to eliminate both water and air from getting in. 

Egress windows require regular maintenance to ensure they function correctly. This includes cleaning the glass, inspecting the frame and well for debris, and making sure the cover or well drains properly. It is also important to check that the window sills and wells are watertight and to inspect and repair any damage to the window frame or seals to prevent leaks and maintain functionality.

Deciding whether to repair or replace a window depends on the specific issue, the window's age, and the cost-effectiveness of the solution.

Repair is often better for:

• Minor issues such as a single broken glass pane, a stuck window, or small leaks. Repair is typically more affordable for isolated problems.

Replacement is the better long-term solution for:

• Major problems like deteriorating or rotting frames, significant leaks, or drafts.

• If your windows are over 15 years old, as repairs may only be a temporary fix for an aging unit.

• If you have a widespread problem affecting several windows.

Yes, it is generally better and more cost-effective to replace all your windows at once. Contractors often lower the per-window labor and material costs for larger projects, saving you money in the long run. Installers may also quote a flat rate for overhead, making multiple small jobs more expensive than one large one.

Replacing all windows simultaneously offers other advantages:

• Aesthetics and Home Value: It creates a cohesive style and uniform energy efficiency, which is appealing to potential home buyers.

• Efficiency: The entire replacement process, which can take several weeks, is completed in a single, more efficient project.

However, replacing all windows requires a significant upfront investment. While you can replace just a few windows, experts recommend replacing at least five to eight at a time to avoid high overhead costs. An exception is when a single window is damaged; in that case, it can be replaced on its own.