DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Painting Forum > New drywall, an expirement




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 08-05-2013, 06:22 AM  
jeffnc
Junior Member
 
Join Date: Aug 2013
Posts: 7
Default

Quote:
Originally Posted by Jmayspaint View Post
Some small gouges in the drywall filled with the Dap, after the first coat and sanding. After the patches dried, I sanded them flush, and finish coated the wall (spray only, no back roll).
Wait a minute... if that's the same paint, how do you know if the lack of flash is due to the "non-flashing" Dap or the "self-priming" Valspar? I guess you're saying those spots had no flashing, as opposed to the very little flashing of the paint over other mudded areas?


__________________
jeffnc is offline  
 
Reply With Quote Quick reply to this message
Old 08-05-2013, 06:31 AM  
Jmayspaint
Member
 
Join Date: Jul 2013
Posts: 60
Default

Quote:
Originally Posted by jeffnc View Post

Wait a minute... if that's the same paint, how do you know if the lack of flash is due to the "non-flashing" Dap or the "self-priming" Valspar? I guess you're saying those spots had no flashing, as opposed to the very little flashing of the paint over other mudded areas?
Well, that's a good point. Both products (spackle and paint) would presumably help reduce flashing.

I have also tried the crack shot with BM Advance gloss without priming it. It did the job there too.

I used it to fix some defects on this stairwell trim, then put 2 coats of Advance on. No flashing at all.


image-2958796217.jpg  
__________________
Jmayspaint is offline  
 
Reply With Quote Quick reply to this message
Old 08-29-2013, 06:04 PM  
Jmayspaint
Member
 
Join Date: Jul 2013
Posts: 60
Default

Well, after some not so stellar adhesion tests on the basement walls, I decided to use PVA primer on the main floor.. As long as I have been painting, I can't remember having used PVA before.

As before I sprayed and back rolled @4-6mil.
The PVA covered great. Didn't fuzz up the Sheetrock much at all. So far in pleased with it. And it cost about 1/3 as much as using the enamel for a first coat.

It will be interesting to see if it bonds to the joint compound any better that the Ultra paint&primer.

image-388225107.jpg   image-3381199112.jpg  
__________________
Jmayspaint is offline  
 
Reply With Quote Quick reply to this message
Old 09-02-2013, 10:21 AM  
Jmayspaint
Member
 
Join Date: Jul 2013
Posts: 60
Default

The walls primed with PVA are doing better with early adhesion tests than the un primed walls did.
But after 2 weeks+ cure time, the non primed walls are passing a tape test also.
Overall, there is little difference in the primed and un primed walls. The un prime walls just took longer to cure.

__________________
Jmayspaint is offline  
 
Reply With Quote Quick reply to this message
Old 09-02-2013, 10:23 AM  
Jmayspaint
Member
 
Join Date: Jul 2013
Posts: 60
Default

One coat PVA, one coat Ultra satin wall paint.

Both sprayed and back rolled.

image-4164162371.jpg  
__________________
Jmayspaint is offline  
 
Reply With Quote Quick reply to this message
Old 09-03-2013, 07:49 AM  
Jmayspaint
Member
 
Join Date: Jul 2013
Posts: 60
Default

I said there was little difference in the finished product, a that is true. But there are some differences on the way.

1. The PVA didn't 'fuzz' the drywall as bad and was easier to sand.

2. The PVA cured way faster than the enamel, though both are showing good adhesion after curing.

3. The PVA is way cheaper than the enamel, so I this case it was cheaper to prime. However, this is a two coat spray/roll system. It would be different with roll only.

4. The two coat enamel walls seem to have slightly better sheen hold out. (A little better shine)

5. The PVA seemed to hide textural differences between mud an board a little better.

I would not hesitate to use the two coat enamel finish again if the situation called for it. It did bond well to the mud after curing (2weeks!)

__________________
Jmayspaint is offline  
 
Reply With Quote Quick reply to this message
Old 09-03-2013, 08:03 PM  
imported_Workaholic
Senior Member
 
imported_Workaholic's Avatar
 
Join Date: Mar 2012
Posts: 310
Default

I typically use ppg's 6-2 which is a pva for drywall priming.



__________________
imported_Workaholic is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Best Riding Lawnmowers Louise General Home Improvement Discussion 6 04-20-2008 10:40 PM