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Old 01-18-2008, 11:59 PM   #1
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I just had my basement sheet rocked and had the ceiling done in knockdown. Should this be primed along with the walls? I was looking at using Behr primer and they have laytex based drywall primer and sealer or an enamel undercoat primer sealer. Is anyone better than the other?

Thanks

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Old 01-19-2008, 12:42 AM   #2
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Both primers have different uses. For your purposes, regular primer is fine.

Undercoater is used to seal the undersurface in completely. This stops the paint from absorbing. The paint lays on top and takes longer to dry. Used mostly for higher end work and consistent sheens. Undercoater does not promote adhesion as well as regular primer.
Making sure the surfaces are clean and free of dust is important. Regular primer will be fine. Don't use behr paint, especially on the ceiling. Behr paint goes on thick. It typically takes more behr paint to cover the knockdown, and even then, holidays appear more frequently with it.

Use paint from a paint store. Look at the Sherwin-Williams ads for sales. They regurlary have sales on good paint. Look for superpaint or pro-mar 200.
Typically, classic 99 is on sale the most and at the best price. While not junk, it isn't in the same class as Superpaint.

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Old 01-19-2008, 05:21 AM   #3
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Regular primer
The Behr has a huge failure rate, stick with primer from a real Paint Store, ben Moore, Sherwin Williams, or Pittsburgh

One of the best primers for new drywall is Pittsburgh's Speed Hide Primer Sealer for new drywall...it's very affordable and really good
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Old 01-20-2008, 06:43 AM   #4
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Regular primer
The Behr has a huge failure rate, stick with primer from a real Paint Store, ben Moore, Sherwin Williams, or Pittsburgh


Slickshift has given you good advise ,listen to it,not only for the primer but the finish coats also.
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Old 01-20-2008, 09:36 AM   #5
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Wow, I didn't know Behr was so disliked or should I say hated. I used Behr several years back on my kids bedrooms and I just used some Valspar in my bedroom. While I did notice that it was a lot more viscous than the SW we used in the rest of the house, it seemed to go on ok. I also thought I remember Comsumer reports rating it pretty high.

I had some other folks tell me I should spray the ceiling and not roll it because some of the knockdown will come off with the roller?
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Old 01-20-2008, 10:58 AM   #6
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Just curious. What is the failure rate of Behr paint?
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Old 01-20-2008, 11:05 AM   #7
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Have you ever use a sprayer before? If not, I would recommend that you use roller. It will helps push the paint into knockdown surface better.

knockdown will not come off with the roller.

If you never use sprayer before, you might end up spending more time and money.

Good luck.
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Old 01-20-2008, 07:02 PM   #8
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Quote:
Originally Posted by jerryh3 View Post
Just curious. What is the failure rate of Behr paint?
This is a good question
And not an easy one to answer
I'll post something in the "Commenting on Behr Paints" thread
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Old 01-20-2008, 07:10 PM   #9
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Quote:
Originally Posted by kcdave View Post
I had some other folks tell me I should spray the ceiling and not roll it because some of the knockdown will come off with the roller?
This is not true

I understand where it comes from, but it's not an issue really

Because many houses were built or remodeled during the Reagan era, and it was a common practice to do a minimal tape job on ceilings, and spray up a "popcorn" texture

Unfortunately, often the builders or homeowners thought it looked just fine
being ceiling, it would take a looooong time to get dirty enough to need repainting

If the ceiling wasn't ever painted (or if it had water damage from the backside), then when it was finally painted 10 or 20 years later, the popcorn could be pulled right down
It's pretty rare for this to happen nowadays (most popcorn was coated...or has been in the last 20 years), but is possible (and easy to test)

I've never heard of knockdown being pulled down by a painter....unless there was serious issues with the ceiling/knockdown
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Old 01-24-2008, 07:02 PM   #10
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There is no such thing as "regular" primers there are GP's general purpose primers used mainly for sealing a surface such as new dry wall, or there are stainblocking primers obviously used for yep you guessed it stainblocking and sealing a surface which in my brand are Kilz 2 (water based) and kilz original which is oil based. There are also premium primers which provide you with an extra bump of TIO2 which is an additive to add more hyde capabilities for those deep stains.....but truly with new drywall where stainblocking is not an issue I would reccommend Kilz General Purpose interior which can be bought at really any hw store including Wal-Mart. Tape joints on new drywall are not stains therefore using a stainblocking primer will not help or hurt your project a GP primer is less $$$$ but does the exact job you need done by just sealing your surface so your drywall does not suck in paint.
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Old 01-25-2008, 03:07 PM   #11
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I was simply differentiating between and undercoater and "other" primers. Whether pva or your beloved kilz2, just something other than an undercoater.

TI02 (titanium dioxide) is NOT a major factor in primers of drywall or knockdown. A pva that you can see through provides just as much blocking power.


Last edited by slickshift; 01-25-2008 at 07:08 PM. Reason: a little too personal joewho
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