Is It True That Oil Based Can Go Over Latex? - Painting - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Painting

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 07-07-2008, 12:21 AM   #1
Member
 
Join Date: Jul 2008
Location: Dallas
Posts: 62
Rewards Points: 75
Default

Is it true that oil based can go over latex?


An old painter told me the other day that you can paint oil based over latex, but not the other way around (at least not without a lot of trouble). Is this true?

Advertisement

Sasha2000 is offline   Reply With Quote
Old 07-07-2008, 06:48 AM   #2
Guest
Guest
 
Posts: n/a
Default

Is it true that oil based can go over latex?


I've always been taught the exact opposite. Generally you can put just about anything over a universal primer whether it is oil or latex. If you put oil over an old latex, even if it is sound, a lot of times it will peel since oil grabs so hard to it. Latex over oil can have issues adhering unless you use the proper type of product that can stick fine to an oil finish. That said, some of the newer acrylics are so aggressive now that they bite harder than oil and can even cause old oil base to peel. I've mainly seen this on old roofs with too many layers of paint.

Advertisement

  Reply With Quote
Old 07-07-2008, 11:26 AM   #3
Member
 
Join Date: Jun 2008
Posts: 1,264
Rewards Points: 500
Default

Is it true that oil based can go over latex?


You can paint either oil or latex over either kind of primer.

When it comes to painting over paint, then my understanding is that you can paint an oil based paint over a latex paint, but not the other way around unless the oil based paint is a flat paint (in which case it's rough enough for the latex to adhere well).

If you want to paint a latex over an oil, the normal procedure is to apply an alkyd primer first over the oil based paint, and then paint the latex over the primer.

Also, with either kind of paint, you need to rough up the surface of a semi-gloss or gloss paint before painting over it with the same kind of paint. The purpose in doing this is to increase the surface area between the two films to increase the adhesion between them.
Nestor_Kelebay is offline   Reply With Quote
Old 07-07-2008, 06:27 PM   #4
Tired, Cold, and Damp
 
slickshift's Avatar
 
Join Date: Aug 2005
Location: Cape Cod
Posts: 3,089
Rewards Points: 2,000
Default

Is it true that oil based can go over latex?


Quote:
Originally Posted by Sasha2000 View Post
An old painter told me the other day that you can paint oil based over latex, but not the other way around (at least not without a lot of trouble). Is this true?
Yes
A bit of oil based primer would solve the 'trouble' for "the other way around"
slickshift is offline   Reply With Quote
Old 07-08-2008, 01:08 PM   #5
Member
 
Join Date: Jul 2008
Location: Dallas
Posts: 62
Rewards Points: 75
Default

Is it true that oil based can go over latex?


Thanks for the reminder about primer. I always seem to get lucky and just paint a new coat with a light sanding. But I need to pay attention to the 'basics' and start using primers again. Thanks for the info.
Sasha2000 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Flat over Semi-Gloss dankreboot Painting 21 02-24-2013 08:46 PM
Painting a garage door dfoxworthy Painting 6 06-22-2008 11:51 PM
Oil base or latex for bathroom? Termite Painting 2 05-29-2008 11:11 PM
Another Q re: oil or latex, etc.. Corcoran1 Painting 6 04-11-2008 10:11 PM
New deck staining questions sk8z Painting 7 11-14-2007 07:45 PM




Top of Page | View New Posts