Wet Sponge Instead Of Sanding

 
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Old 03-27-2010, 11:59 AM   #1
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Wet Sponge Instead Of Sanding


Can anyone give me the proper way to use a wet sponge instead of sanding.
A friend of mine had someone do an entire bathroom using a wet sponge. his wife did not want any dust in the house. The job was beautiful. I wish I was there when the guy did it.
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Old 03-28-2010, 06:28 AM   #2
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Re: Wet Sponge Instead Of Sanding


Years of experience,I'll let you know when the book comes out.

Multiple thin coats,pulled tight, and knowing what not to sponge when you are sponging.

Or,all regular mud. you can sponge that all the way back to tape, but it takes longer.

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Old 03-28-2010, 07:37 AM   #3
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Re: Wet Sponge Instead Of Sanding


I have done this a few times it's alot more work, But we use Durabond 90 you trowel it down like plaster after it sets up, you shave any lines or high spots, then use a 14" trowel and a spronge use the spronge to wet the trowel then smooth down the Durabond, then once you have gone over the whole surface then you use the spronge and keeping the spronge damp not wet you burnish like plaster, the best spronges are the orange square ones they sell at the Depot I think they come 3 or 4 to a pack, oh and when you use the wet spronge technique be ready for a arm and shoulder work out
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Old 03-28-2010, 07:47 AM   #4
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Re: Wet Sponge Instead Of Sanding


I don't wait for it to setup like Frank. There is a window where it is firm but not set up. That is when we hit it with drywall sponges. The drywall sponges are nice because if you get a high spot you can flip it over and use the scruber side and knock it down.

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Old 03-28-2010, 08:21 AM   #5
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Re: Wet Sponge Instead Of Sanding


Cole,
The reason I like to let it set up cause I have had it lose the bond and it pulled off, so once it starts to turn light gary is when we hit it, cause we wet it then trowel it this way it gets smooth as glass,
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Old 03-28-2010, 09:20 AM   #6
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Re: Wet Sponge Instead Of Sanding


Quote:
There is a window where it is firm but not set up
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Old 03-28-2010, 09:22 AM   #7
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Re: Wet Sponge Instead Of Sanding


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Originally Posted by Frankawitz View Post
Cole,
The reason I like to let it set up cause I have had it lose the bond and it pulled off, so once it starts to turn light gary is when we hit it, cause we wet it then trowel it this way it gets smooth as glass,
I thought you ment FULLY cured. Yeah when it's starting to turn gray is when we hit it too. You can still fingure nail it but it isn't cured hard.

We call that back troweling here and we only do that if there is no texture involved.

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Old 04-15-2010, 06:30 AM   #8
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Re: Wet Sponge Instead Of Sanding


forget wet sanding I use a dry rag
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Old 04-15-2010, 07:01 AM   #9
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Re: Wet Sponge Instead Of Sanding


My grandfather only ever used a wet sponge, and either he was no darn good at it or the wet sponge never comes out perfect.....his joints looked like crap.
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Old 04-15-2010, 07:07 AM   #10
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Re: Wet Sponge Instead Of Sanding


What say the queen of drywall finishing, Raven? It's nice to have her back online. Nice job photos on her site. That dimpled smile photo (covered with mud) will win over just about anyone.
Steve
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Old 04-20-2010, 07:30 PM   #11
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Re: Wet Sponge Instead Of Sanding


So when you wet sponge, does it soften the mud to the point where it scores or gouges easily if not careful? I imagine this technic takes alot of practice?
Steve
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Old 04-21-2010, 05:16 AM   #12
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Re: Wet Sponge Instead Of Sanding


Yes it does scratch and gouge easily while you are working it.

The sponge I prefer is a grouting sponge, very durable.

Sponging works best on new drywall. Painted surfaces can turn into a nightmare.

The first coat is the most important, it may be the only one if your lucky.

Keep a blaster fan,you may need it to dry edges sometimes.

You will learn from your mistakes.
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Old 03-29-2014, 11:15 PM   #13
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Re: Wet Sponge Instead Of Sanding


I am about to embark in this unsanding endeavor with the Wet Sponge.
Is there anything I really need to look out for using 90 minute mud mix?
I have always done dry sanding. I don't want to do it any more.
I'm too old to hold the sander now.

Thanks
Jim
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Old 03-30-2014, 04:51 AM   #14
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Re: Wet Sponge Instead Of Sanding


Quote:
Originally Posted by Jimh77 View Post
I am about to embark in this unsanding endeavor with the Wet Sponge.
Is there anything I really need to look out for using 90 minute mud mix?
I have always done dry sanding. I don't want to do it any more.
I'm too old to hold the sander now.

Thanks
Jim

Don't think of the sponge as your sander. The purpose of the sponge is the lather the surface of the compound while you tool the lather with a knife to fill the pits and feather the edges. I prefer the 6" knife for this but others may prefer a different size. It is all trial and error at first, but essentially all you need to do is work the wet sponge over the the surface until you get a good lather going. You use the knife to reuse the later by directing it over defects and killing the edges. It may sound pretty simple because it is "pretty simple". It just takes practice. Don't worry about screwing up at first because almost every does on the first couple attempts.

Last edited by D.E.P.S.; 03-30-2014 at 05:00 AM.
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Old 03-30-2014, 07:00 AM   #15
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Re: Wet Sponge Instead Of Sanding


I think if you are used to applying the compound neatly and know when something is feathered out enough, wet sponging works out. You're not going to be removing huge defects like some people do with sanding. I never understood over applying compound, if you put it on neat and tight, you can get by with the sponge. But I am not a drywaller, only small jobs and patches.
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Old 03-30-2014, 08:32 AM   #16
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Re: Wet Sponge Instead Of Sanding


Wet sponges are good at knocking the edges out, not so good on heavily mudded areas. We will sponge the edges after sanding to smoothe out paper that gets roughed and to knock out the edge that sandpaper cant hit. Big orange ones are good, ring it almost completely out, no water dripping and pretend its a sanding sponge and you will get the hang of it
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Old 03-30-2014, 10:08 AM   #17
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Re: Wet Sponge Instead Of Sanding


Everybody knows how to do drywall...
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Old 03-30-2014, 01:48 PM   #18
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Re: Wet Sponge Instead Of Sanding


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Everybody knows how to do drywall...
......don't know bout that! I do it for a living and find myself more confused everyday
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Old 03-30-2014, 03:19 PM   #19
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Re: Wet Sponge Instead Of Sanding


You know what I'm saying. And you're right, it is an always evolving trade dealing with crap building, crap materials, the "I need it done yesterday" mentality. And oh ya, everybody knows how to do drywall!!
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Old 03-30-2014, 06:47 PM   #20
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Re: Wet Sponge Instead Of Sanding


Carpet on a sanding pole...

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