Greetings.

If you have a flat or satin paint; what can be added to make it glossy ?

Try 10% varnish in a sample that has the same solvent-type as the paint.

A couple layers of transparent glossy paint on top?

Edited May 8, 20205 yr by Sensei

44 minutes ago, Sensei said:

transparent glossy paint

aka "varnish" 🙂

45 minutes ago, StringJunky said:

Try 10% varnish in a sample that has the same solvent-type as the paint.

Have you tried that? Does it work?

1 minute ago, Strange said:

aka "varnish" 🙂

Have you tried that? Does it work?

No, googled it. That's why I said to do a sample first.

4 minutes ago, StringJunky said:

No, googled it. That's why I said to do a sample first.

I would be interested to know if it does work. I guess it might increase the glossiness. There's a risk the "varnish" component (whatever that is) separates out as it dries, though. It might bubble or flake.

@Externet Let us know how you get on. (I think @Sensei's suggestion may be the most practical, though.)

53 minutes ago, Sensei said:

That is one slippery looking floor.
Would be an invitation for lawsuits, in a business setting.

7 minutes ago, MigL said:

That is one slippery looking floor.

But they are easier to maintain by staff. Dust and dirt do not attach to it so easily..

Edited May 8, 20205 yr by Sensei

9 minutes ago, Strange said:

I would be interested to know if it does work. I guess it might increase the glossiness. There's a risk the "varnish" component (whatever that is) separates out as it dries, though. It might bubble or flake.

@Externet Let us know how you get on. (I think @Sensei's suggestion may be the most practical, though.)

As a paint sprayer, the trick with a varnish/clear coat is to stop it being glossy.

Edited May 8, 20205 yr by dimreepr

7 minutes ago, MigL said:

That is one slippery looking floor.
Would be an invitation for lawsuits, in a business setting.

But brilliant for running and sliding across in your socks!

Just now, dimreepr said:

As a paint sprayer, the trick with a varnish coat is to stop it being glossy.

Unless you want a glossy finish, presumably?

4 minutes ago, Strange said:

Unless you want a glossy finish, presumably?

Indeed... 😉

3 hours ago, Sensei said:

But they are easier to maintain by staff. Dust and dirt do not attach to it so easily..

Yes and no.

As soon as anyone walks on it  the surface will get scuffed and look bad,

Thanks, gentlemen.

To make it clearer, I meant added to the paint product itself, not on top of a painted surface as a 'clear coat'   (So it would produce a glossy finish when applied)  Not restricted to floors, but to metal machinery, wood,  walls...

The expert clerk at a paint store had no clue and started to search the web, with no response... 😕

Any reason you can't use gloss paint? 🤔

The alkyd paint I already have of the chosen color is not available in the high gloss level, and wanted to know if 'glossiness' was an additive.

You can try messaging DrP; I believe he was a coatings chemist.
( haven't heard from him in a while )

23 hours ago, Externet said:

To make it clearer, I meant added to the paint product itself, not on top of a painted surface as a 'clear coat'   (So it would produce a glossy finish when applied)

They would have to be DESIGNED to work together since the beginning by producer of paint..

Flat, matte or satin paint from definition have little or no gloss.