Heard bad advise today.

Hamilton

I was in a big lumber yard picking up fence material and overheard the guy behind the paint counter talking with a customer. He said that the newer latex paints are far superior than of old, which I thought was right on.

Then the lady asked, "Well, what about going over old oil?" To which he said, "Sure! Just de-gloss the old stuff."



Poor lady, that'll be a future mess...

__________________
People sleep peacefully at night because rough men stand guard to deal with violence on their behalf.

slickshift

Oy...




Well, it might be OK...
Sometimes that works...

slickshift

Actually, this would probably be a good time to once again reiterate:

You are always going to get better materials, product, and advice from a Paint Shop than at a paint department

Hamilton

Slick, we bid on a house a couple of weeks ago that had just been painted, interior. Already, after only two weeks, the latex was lifting off the old glossy oil base.

The H.O. asked, "So...what's the bid to fix all this?" I said, "There is no bid on messes like this, it's T & M only!"

His face was longer than a horse's...

I'm sure we're not going to get the job, I think this guy chases the lowest bid.

__________________
People sleep peacefully at night because rough men stand guard to deal with violence on their behalf.

slickshift

Ha ha ha...
I'd bid it...but that's a project and a half
Yeah it's not going to be cheap either way

Good answer though, I try to avoid T&M, even on wallpaper removal
But depending on what it looked like, I'd consider it

Well good luck to him when the $10 an hour CraigsList Handy-Type Guy/Gal messes it up even more....

The lowest bid on that will be from someone who has no idea what they are getting into, or is low-balling to add-on later

Maybe he will see the light and get a qualified fix for it

joewho

From what I've heard, todays oil modified latex paints will go over old oil.

boman47k

I have read the same thing. Seems now you can sand the oil a little and paint over. I have never knowingly done it. There was one time I was working for another guy and felt we were painting over oil. The latex tended to just smear over the older paint. I told him I thought we were going over oil. He had to go back and recoat it. He blamed on the paint.

joewho

Wait a minute. Traditionally, a latex over oil has been acceptable.

Oil over latex was the no, no. Todays paints make that possible.

slickshift

Please keep in mind that is for a specific type of paint, oil-modified latex
Not all latex paints are oil-modified

Also please keep in mind what the sales people or marketing dept. says about their products is not always in-the-field accurate

They also "say" you can paint some of the new PT pine right away
That's a crock

Sounds like it was over oil to me
oops...it happens

Hamilton

Are you absolutely sure? We have seen disasterous results with that, time and time again.

Oil over water is usually no problem because oil will stick to almost anything, it's one of the reasons the "cheap charlies" use it...they don't have to prime.

__________________
People sleep peacefully at night because rough men stand guard to deal with violence on their behalf.

slickshift

I believe he's confused
...it happens

Hamilton

It's ok, 'cause I did that today too...serveral times.

__________________
People sleep peacefully at night because rough men stand guard to deal with violence on their behalf.

poppameth

There is nothing wrong with what he said, provided he has a product that lives up to what he says it will do. We've sold several acrylics for many years now that will indeed go right over oil even without sanding. The schools around here use it all the time. One of the most widely available is Mirrolac from Devoe. We've put it over oils and epoxys and never had issues. Pratt & Lambert had one called Accolade that is capable of it. Sampson makes a very good product called Weatherbrite that will do it as well. None of these are alkyd modified.

poppameth

Oh and Oil over latex is a no no most of the time because oil shrinks more when it dries and bites hard at the latex, sometimes causing it to come loose. Doesn't always happen but it is a possibility.

joewho

Exactly. That's basically how you get a crackle effect.