Replace Caulking on Outside of Windows

[ASNomads]

Hi all,

What material do I want to use to replace the outside caulking on the 70s window?

Is the application simply done with a caulk gun? Anything to be aware of?

Thanks,

Georgie

[Lance M]

Hi Georgie,
Welcome to the forums. What you are describing as caulking is the gasket that the window panes are set into the outer frame. You can reseal them with any good polyurethane sealant. You can use Trempro 635, Sonolastic NP 1, 3M 540 or Sikaflex 221. I recommend masking off the outer frame then apply sealant with a caulking gun, tool, then wipe off excess with a cloth moistened with mineral spirits.
This thread has a lot of info on completely rebuilding windows.

[ASNomads]

So if I would wana do it right, I would actually take apart the whole window and replace the gasket!?

I have single pane windows which seems to make the job easier than in the thread you shared.

Any idea where can I find the right gasket? Couldn't locate it at ODMRV at a quick glance...

Thanks,

Georgie

[Lance M]

It is probably not necessary for a single pane window. Most people only take apart the double pane windows because they can't see through them because of the window film applied to the inside of the outer pane. If you just do the simple method above, I'm sure you will have many years of leak free windows.