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Thread: Necessary to sandblast finish?

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    Join Date
    Jul 2014
    Location
    Orlando, FL
    Posts
    12

    Necessary to sandblast finish?

    I'm buying a house with a stagnant pool - hasn't run in months and is dark dark green. The plan is to refinish it regardless of what is under there, so I'm not too worried. One contractor is insisting that the black algae cannot be eradicated by chemicals and will come back through the new finish; unless I sandblast the finish down to the (presumably) gunite. For a fairly small pool, the added c cost is $1K. Opinions? Thank you!
    10,000 gal in-ground; 1hp single speed pump; Puck chlorination; Pebbletek; Hayward C1200 filter. Coming: solar, Intermatic PE953RC and Z-wave.

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    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: Necessary to sandblast finish?

    Welcome to TFP.

    You can eradicate the algae but it will take a lot of elbow grease (brushing daily) and an elevated FC level to do so. How long? That depends on how well you maintain the elevated levels and brush the pool.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  3. Back To Top    #3

    Join Date
    Jul 2014
    Location
    Orlando, FL
    Posts
    12

    Re: Necessary to sandblast finish?

    Quote Originally Posted by Casey View Post
    Welcome to TFP.

    You can eradicate the algae but it will take a lot of elbow grease (brushing daily) and an elevated FC level to do so. How long? That depends on how well you maintain the elevated levels and brush the pool.
    For a new PebbleTek resurfacing job, what do I want the contractor to do? Drain and apply over the current dirty plaster or does he need to get any algae spores off the surface first? Is that a chemical or physical (e.g. sandblasting) process?
    10,000 gal in-ground; 1hp single speed pump; Puck chlorination; Pebbletek; Hayward C1200 filter. Coming: solar, Intermatic PE953RC and Z-wave.

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