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  #1  
Old 05-06-2019, 08:07 PM
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Default Siphon sand blasting
I am blasting my foundation to prep it for some tuck pointing and painting. What screens do you guys use to sift or clean the sand? I am using my blaster with the vacuum that recirculates the sand and its getting clogged a lot.

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Old 05-06-2019, 08:20 PM
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Window screen should work, tilt it so the clumps fall off the end.
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Old 05-06-2019, 10:06 PM
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The sand absorbs moisture from the compressed air.
If it gets too wet it clumps and stops working properly you may need to dry the sand after a few trips through tue machine.
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Old 05-06-2019, 10:20 PM
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Is this above or below grade? I’m guessing above, just wondering.


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  #5  
Old 05-07-2019, 08:23 AM
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Above grade. Getting ready to paint the foundation and want to seal up a few areas prior. My air is dry, its not clumping. I wasn't sure if there was a certain size of screen to use, thanks for the info gang.
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Old 05-07-2019, 05:24 PM
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Quote:
Originally Posted by gimpyrobb View Post
I am blasting my foundation to prep it for some tuck pointing and painting. What screens do you guys use to sift or clean the sand? I am using my blaster with the vacuum that recirculates the sand and its getting clogged a lot.

Reference here:
https://www.shopfloortalk.com/forums...ad.php?t=50039
Rob trying to understand this... You are Sandblasting the foundation under the Brick ???

If So why the need for sandblasting...?? Why not High-pressure wash with Clorox... A pressure washer will clean the concrete No problem and Clorox will remove dark spots and the green algae mold...
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Old 05-07-2019, 07:44 PM
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Yes, the area under the brick. I am fixing the foundation so it doesn't leak anymore. I'm sure the pressure washer I have would cause more water in the basement that I dont want. The blaster leaves a rough surface for the mortar to stick to too.
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Old 05-07-2019, 09:15 PM
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Originally Posted by gimpyrobb View Post
Yes, the area under the brick. I am fixing the foundation so it doesn't leak anymore. I'm sure the pressure washer I have would cause more water in the basement that I dont want. The blaster leaves a rough surface for the mortar to stick to too.
Ok, now I see why didn't know there was a basement.
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Old 05-08-2019, 05:30 PM
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We Texans don't see many basements
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