screeding base

Discussion in 'Hardscaping' started by JMMack, Feb 22, 2013.

  1. DVS Hardscaper

    DVS Hardscaper LawnSite Fanatic
    Messages: 6,620

    A lot ta weighs to skin a cat.

    A string line is nice because it allows you to see what's going on, allows you to see imperfections in the base, where as a laser does not.

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  2. ryhenry09

    ryhenry09 LawnSite Member
    from NY
    Messages: 9

    uhh, no. Your telling me you can not see whats going on with a laser in the base? Maybe need some help operating a laser.

  3. big daddy b

    big daddy b LawnSite Member
    Messages: 95

    In my opinion it's a lot easier with string lines. You string line it, you can see across a whole plane where the imperfections are. With a laser you can only spot check it for highs or lows.
    But it also depends on exactly what you're doing, square patio versus curved 3ft wide walkway.
  4. DVS Hardscaper

    DVS Hardscaper LawnSite Fanatic
    Messages: 6,620

    Exactly right. Well said.

  5. DVS Hardscaper

    DVS Hardscaper LawnSite Fanatic
    Messages: 6,620


  6. DLCO

    DLCO LawnSite Member
    from Ontario
    Messages: 14

    hmm "screed" is a new term to me.

    I usually set pipes low for crush height, tamp (repeat these steps if the crush depth is a lot), then I set my pipes to my final height and use screenings as my final base.

    If i'm not using pipes then I am leveling by hand. I am fantasic with the rake, but I think no matter how good you are it will not get you perfect heights or slopes, and has a big potential for dips in your interlock which obviously will lead to water pooling
  7. EgansCountryGardens

    EgansCountryGardens LawnSite Member
    Male, from Plymouth, MA
    Messages: 165

    Yeah. A laser is great for setting your points, but how are you going to spot check with it if you have your patio pitched one way , or sometimes pitched two ways like a compound pitch. There is always a need for the string.
  8. DVS Hardscaper

    DVS Hardscaper LawnSite Fanatic
    Messages: 6,620

    Over the years I've made mention that we set our bases using a string line and line level. And everytime, someone has either told me I'm a fool or has questioned this.

    Folks - patio installation is physical labor. And it's also a craft. No computers are used in the installation aspect of patio building. I realize that a string line and $2 line level sound old school to some. But sometimes old school still out performs technology.
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  9. jbailey52

    jbailey52 LawnSite Bronze Member
    Messages: 1,095

    I agree with string levels. The only times my guys will even set up the laser, is when they are setting grades and elevations for level walls, or steps where they can scribe the lines. For slopes, they always use a string.
  10. 1idejim

    1idejim LawnSite Fanatic
    Messages: 11,358

    For 40 years we set all hard points with a transite/dumpy level. A lazer is not as accurate as one might think.

    We also screed/rod all sub base for uniformity.
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