Primer? - Painting - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 01-27-2012, 08:57 PM   #1
Join Date: Dec 2011
Location: Toronto,Canada
Posts: 44
Rewards Points: 25


I have a question curious in my mind: when do I need to apply primer on walls?


TurboDIYer is offline   Reply With Quote
Old 01-27-2012, 09:04 PM   #2
Join Date: Nov 2011
Location: Hartfield VA
Posts: 34,448
Rewards Points: 14,026

When it's bare drywall, repairs have been made, there a vastly differant colored paint going to be applyed, covering up old stains.


joecaption is online now   Reply With Quote
Old 01-28-2012, 06:52 AM   #3
Join Date: Jan 2011
Location: Cape May, NJ
Posts: 2,392
Rewards Points: 1,000

Turbo, to expand on Joe's points. Yes, when the drywall is new a full coat is on order. When you have patches or stains a spot priming is necessary. I've never really been in the camp to use primer during color changes.
Primer is not really designed to give hide. One coat of finish will hide old colors better than a coat of primer. I think the justification is that primer is cheaper. Really? Most premium primers are no longer that much cheaper than finishes. To buy an additional product, primer, have two different set ups, (primer and finish, two covers and cleaning up primer set up prior to finish), is the cost of product difference justified when the time and energy involved is only a few bucks. The labor and time involved in working with two products doesn't justify the savings. It's easier and cheaper, IMO, to just buy extra finish, apply a third coat and be done with it.
I've been known to apply a full prime coat over previously painted surfaces if the surface is very old, degraded, or otherwise shabby, a lot of staining, etc. The primer will give the surface a fresh start for the two coming topcoats. Without the primer, the first coat of finish will be called upon to seal the surface, which deprives the first coat of some of it's characterisitics, leaving the second topcoat short as well.
Though the paint companies will tell you that their "self priming" finishes eliminate that concern, I still err on the side of priming the worst of surfaces. Besides, sealing surfaces is the job of primers, not finishes, whose job is to provide the sheen, color, and protection of the substrate.
jsheridan is offline   Reply With Quote
The Following User Says Thank You to jsheridan For This Useful Post:
Jay 78 (01-28-2012)

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
Free 5 gl of Behr Primer: Why Shouldn't I use it? Lovegasoline Painting 18 10-12-2013 07:47 AM
Zinsser Bathroom Paint canuckjack Painting 7 08-27-2012 08:00 AM
Issues with primer on kitchen cabinets blinkandimgone Painting 4 08-17-2010 11:48 AM
Primer for vinyl covered wallboard a new DIY-er Painting 0 02-20-2010 06:29 AM
help me pick a primer jheavner Painting 21 01-26-2009 11:30 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1