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Old 05-19-2009, 05:20 PM   #1
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defective joint compound


For the past month while remodeling my house I've been using several batches of Hamilton brand joint compound (both hot and all purpose). I had nothing to compare it to until recently when my dad bought a batch of USGs all purpose. USG's mixed soooo much easier than hamilton. it went on more smoothly. there were no clumps. it dried faster. and it was easier to sand. Well, needless to say after good experiences with USG's all purpose I went and bought some. Well, I think I must have gotten a bad batch this time because all the qualities that I original found were superior to hamilton are all gone. The new USG AP batch doesn't mix well and it's lumpy. I hand mixed it for 15 minutes and it still is lumpy. I tried to apply some to the wall and the clumps do not allow a smooth surface or feathering. The clumps run through leaving streaks. Do any of you sometimes get a bad batch of joint compound? Does this happen? I noticed from when i first opened up the box it wasn't as moist as the original batch I had. It seemed harder too.

I ended up using an electric cake mixer for a few minutes and that smoothed out the big chunks(but not the really small ones tho) but I don't think I should have to do that to be semi-satisfied with the product. I want the consistency and ease of the first batch I had. Should I return it to the store?

oh and I live in southern california and I didn't leave the mud outside. It's been sealed in the room for 2 days.


Last edited by newbpainter; 05-19-2009 at 05:34 PM.
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Old 05-19-2009, 05:36 PM   #2
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defective joint compound


They sell mixers for compound that attach to a drill. They run about $15.00. Use one and you're go to go.
Ron

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Old 05-19-2009, 06:13 PM   #3
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defective joint compound


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Originally Posted by Ron6519 View Post
They sell mixers for compound that attach to a drill. They run about $15.00. Use one and you're go to go.
Ron
That doesn't address the issues I brought up. (varying quality of batches, and small lumps present even after using a cake mixer). Nor does your post offer any insight into whether or not this is a common occurrence and whether it should be tolerated.

I have a big mixer but no way can it mix those clumps. It could mix water into the compound but not those clumps.
http://www.drillspot.com/pimages/1654/165449_300.jpg

Last edited by newbpainter; 05-22-2009 at 07:16 PM.
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Old 05-19-2009, 06:42 PM   #4
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defective joint compound


All I use is USG and have never had an issue with lumps in 30 years in the remodeling business.
Maybe you're buying this merchandise in a place with a very slow turn over or you're letting it sit around for too long at home or storing it in an inappropriate location. Any and all of these can compromise the product.
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Old 05-19-2009, 07:34 PM   #5
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Ron, I have heard this three times in the last month.I wonder if it is another outsourcing. I called my local newspaper about a problem, talked to Joe in India! Told me I'd have one within the hour.......
Told him I'd wait and watch for him........

I buy everything from the back of the stock, bread, cheese, etc. Take it back, newbpainter, get another one. Be safe, G
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Old 05-19-2009, 07:38 PM   #6
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defective joint compound


Thanks for that response Ron.
The 48lb box of USG AP sat at room temperature for 2 days. So I don't believe my care and storage of the product was an issue.
Both the good and bad batch were from a "big box" store. With the good box of usg, my father said the stocks were nearly empty and that he got one of the last boxes. The day I went to get another box they just stocked it up that day. But who knows how long it's been in the back storage. Long storage in the back may have been the problem. I noticed that the defective batch was not as moist as the last batch I had. That may be from long term storage but who knows for certain.

Question guys, is there any difference in the quality of joint compound that comes in a box and bag vs bucket? someone told me to avoid the buckets because of air pockets in the mud. is this true in your experiences?

Last edited by newbpainter; 05-19-2009 at 08:03 PM.
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Old 05-19-2009, 07:48 PM   #7
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defective joint compound


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Originally Posted by GBAR in WA View Post
Ron, I have heard this three times in the last month.I wonder if it is another outsourcing. I called my local newspaper about a problem, talked to Joe in India! Told me I'd have one within the hour.......
Told him I'd wait and watch for him........
Thanks for the response GBAR.
I've had issues with hamilton as well. Some batches of hot mud mixed somewhat easy and others were a p.i.t.a. and clumpy. I also bought a big bucket of premixed Hamilton All Purpose... it had sooo many air pockets. And the air pockets weren't from mixing, they were present before I even mixed. I opened up the bucket and there they were. (those air pockets got bigger as I troweled) I taped corners using the Hamilton All purpose and the next day when I go to see my work ....its bubbled right in the middle on every corner I did. I taped corners using the good batch of USG AP and all was fine .I did the taping with the USG and Hamilton on the same day(on two different rooms) so my technique was rather consistent using both products. I'm never using hamilton again.

Quote:
Originally Posted by =GBAR
Take it back, newbpainter, get another one. Be safe, G
Will do sir. I will also talk to the manager and see how he handles this. I'm thinking they should randomly pick out a few boxes and check them.

Last edited by newbpainter; 05-19-2009 at 08:17 PM.
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Old 05-22-2009, 07:10 PM   #8
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defective joint compound


So, at the advice of most of the regulars of the forum - thats hammered in nearly every thread when a newb ask questions -, i strayed away from the "evil" big box stores with their "inferior products" and "limited selection", and instead headed down to the local lumberyard thats been in business for around 30 years. Well, they didn't have much of a selection of brands. They had Easy Finish and proform all made by nationalgypsum. I talked to the lady who owns the place and tell her about my previous problems. She assures me that she rotates stock on the regular. Well, I picked up the box of Easy Finish. I checked the bag and it was moist so I'm thinking all is good. I get home and start mixing. Looks decently smooth untill I put it on... Yes, more lumps. It cost 10 dollars there vs the 6 dollar boxes at the big box stores. I wasted more money and time! So I give up on it. The next day I head down to my local Lowes and talk to the exchange person. No hassle at all they let me exchange the opened and used usg box of All purpose that I talked about in my opening post and they let me pick out a new box and let me open it up and check it before I buy them. All is good... I got 2 usg boxes of ap and I'm back troweling like a machine. It mixes easy, no clumps, and goes on smooooth.

The big box stores are not the devil! Btw, Lowes had a way way better selection than my local lumberyard and homedepot.


oh and learning as I go. I put the mud box into a bucket and hooked up my mixer to the electric drill. Smoooth....then I had a little surprise when troweling...little pig tail pieces of plastic from the mixer scraping the bucket. . Not a big deal. As soon as I trowel it on and then I pick the few pieces(maybe 5 little pieces in 5 linear feet) out then smooth it over. haha learn as I go. it's these little things...

Last edited by newbpainter; 05-22-2009 at 07:27 PM.
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Old 05-24-2009, 09:52 AM   #9
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defective joint compound


Sounds like the mud was frozen at some point, perhaps in shipping from the plant to the store. You say you're in Southern California, but no telling where the mud was trucked in from. Once mud freezes and separates, no amount of mixing will make it usable again....

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