[inspiration100]

We've been in our house for about 20 years and never done anything with the vaulted ceilings. Needless to say, they are starting to show signs of wear. They look faded, as if they're losing their varnish. Here's a picture of them:

How do I get these look pristine? What is the preparation and what do you apply to them?

Thank you for your help.

 

[Gymschu]

They almost have that washed-out look that happens when varnish/polyurethane/lacquer gets wet from high humidity or even condensation. It also looks like an exterior type of clear coat or toner may have been used and it's finally on its' last legs. You really need to find out what's on there before we can direct you properly. Maybe someone with more chemical expertise can tell you what tests to conduct on the finish that's on there now to see what it is.

 

[joecaption]

One of the many reasons I hate a vaulted ceiling.
Now your stuck with having to clean the whole ceiling, sand off the old sealer, restain, then reseal.
If it's not cleaned your going to be grinding in the dirt and grease.
Want a finish that needs no sanding, self leveling, high build up then check this out.
http://bristolfinish.us/

 

[ToolSeeker]

A lot depends on the previous finish, doesn't look like varnish to me. There is a product called, I think it's Seal Coat. It is a de-waxed shellac and is compatible with most finishes that don't play well together. Apply the Seal Coat on the existing then apply the clear finish of your choice. Test in an inconspicuous place first of course. I have used it several times when I wasn't sure what the existing finish is and so far it has always worked.

 

[inspiration100]

One of the many reasons I hate a vaulted ceiling.
Now your stuck with having to clean the whole ceiling, sand off the old sealer, restain, then reseal.
If it's not cleaned your going to be grinding in the dirt and grease.
Want a finish that needs no sanding, self leveling, high build up then check this out.
http://bristolfinish.us/

You would clean the ceiling before sanding it? Do you also need to clean it after sanding to remove sanding residue?

 

[ToolSeeker]

Yes you do