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Old 07-07-2013, 09:48 AM   #1
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Why all the different types of compound? I stopped at the store to pick up more and in the Sheetrock brand they had All Purpose, Lightweight All Purpose, Lightweight All Purpose with dust control, Ultralight All Purpose, and topping compound.

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Old 07-07-2013, 11:58 AM   #2
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Why all the different types of compound?

Marketing, money, and competition when you can offer "47" different variations on the same thing and promote it x 47 you sell more than if you only have one product.
If you can offer 47 "different" products and your competitors can only offer two, you get the lion's share of the store shelf space and more importantly- sales.
It's the same gimmick they used to use for a dozen "different kinds" of varnish in the old days, good grief they even had "church pew" varnish!

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Old 07-07-2013, 06:47 PM   #3
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Here are the uses----

All purpose---Green lid---contains glue and is used to set the tape--rather hard to sand--can be used to fill corner bead and use for fill coat---many pros use this for top coat also---

Light weight--blue lid----used for final top coat--creamy and very easy to sand---not good for much else---never use to set tape or fill corner bead.

Powdered 'easy sand'(white bag)---hard to sand---sets in 5--20--45--90 minutes---used to fill voids and miscuts--can be used to set paper--fill corner bead --fill coat---
Some people use it for the top coat but you better be good with a knife as it is really hard to sand.

Durabond (brown bag)--for exterior use mainly---water resistant--hard as concrete--do not plan on sanding this one---
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Old 07-07-2013, 08:28 PM   #4
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It's the same as primer why are there so many kinds of primer. They all serve a purpose. As for drywall compound you only scratched the surface. There is also machine mud, taping mud and the list goes on.
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Old 07-07-2013, 08:45 PM   #5
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Or why so many golf clubs? Why not just one to do it all? Each type of mud has different uses. As mentioned earlier.
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Old 07-07-2013, 09:12 PM   #6
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the variety is intended to confuse people and make taping a mystery----simple as that----
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Old 07-08-2013, 02:14 AM   #7
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the variety is intended to confuse people and make taping a mystery----simple as that----
It's all made from the same base product- gypsum.
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Old 07-08-2013, 08:22 AM   #8
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Or why so many golf clubs? Why not just one to do it all? Each type of mud has different uses. As mentioned earlier.
What is the different uses for light weight, ultra light weight and topping compounds?

From reading on the USG website that all three can be used for top coats and the light weight and ulta light weight can be used for everything.

Last edited by KStatefan; 07-08-2013 at 08:31 AM.
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Old 07-08-2013, 08:25 AM   #9
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It's the same as primer why are there so many kinds of primer. They all serve a purpose. As for drywall compound you only scratched the surface. There is also machine mud, taping mud and the list goes on.
I was not listing all the compounds made just the Sheetrock Brand premixed ones that were in my local Menards.

Last edited by KStatefan; 07-08-2013 at 08:35 AM.
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Old 07-08-2013, 08:59 AM   #10
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Light weight is comparable to All Purpose except it has less glue or adhesive in it this makes it softer and easier to work and easier to sand. The downside is less glue, softer, makes it more prone to cracking. Ultra light weight is pretty new I have used it to skim coat and as a topping. But again the less adhesive makes it weaker. Topping is very thin and has no adhesive so it has no strength. It is very soft and easy to sand so it is only used as a final coat to smooth things out. According to USG website these products are pretty much interchangeable except for the topping. This way you don't have to have buy a bucket of each. personally I would not use the lightweights to say, bed tape in a corner, just because of the likely hood of that area cracking if there is any movement. Hope this answers your question.
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Old 07-08-2013, 01:28 PM   #11
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What is the different uses for light weight, ultra light weight and topping compounds?

From reading on the USG website that all three can be used for top coats and the light weight and ulta light weight can be used for everything.

Marketing, and having 3 products on that valuable store shelf instead of one...
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Old 07-12-2013, 11:17 PM   #12
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you can not use the ultra light weight for taping. and with spraying a knockdown. the mud has a tendency to grab the paper and not wipe down as cleanly as an all purpose. The newer USG ultra light is incredible stuff. Every finisher I know loves the stuff. It spreads like butter with about a cup and a half of water added to the bucket. I recommend it for a skin coat. Two coats for me ,friend, but I'm a pro so good luck.

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