Concrete base

Discussion in 'Hardscaping' started by Joe Cement, Feb 7, 2011.

  1. Joe Cement

    Joe Cement LawnSite Member
    Posts: 30

    We are located in ny and our soil is mostly 90 percent sand. We only excavate 7". 4 " for concrete than 1/2" sand and your paver. Very rarely we will be in a poor soil with lots of clay and we will excavate another 6" to 8" to get below the clay fill with RCA Roll then pour
    Posted via Mobile Device
     
  2. SVA_Concrete

    SVA_Concrete LawnSite Senior Member
    Posts: 467

    joe,

    ask for it in rolls, its made of closed cell foam, water will not hurt it, and it doesn't break apart. huge time saver with the tear strip.
     
  3. Joe Cement

    Joe Cement LawnSite Member
    Posts: 30

    Just a ? Do u still need your expasion joint below it or is all 1 piece. Thanks
    Posted via Mobile Device
     
  4. SVA_Concrete

    SVA_Concrete LawnSite Senior Member
    Posts: 467

    all one piece. the foam is perforated so you can pull away after the pour.


    or pull away for a 3.5 inch piece. or if we are pouring a 4 inch slab with no joint sealant we flip it upside down.

    its great stuff.
     
  5. Swampy

    Swampy LawnSite Bronze Member
    Posts: 1,435

    I'm sorry but you can't sell me on using concrete underneath a patio. I've seen the winter aftermath on concrete and it doesn't settle back in place after a thaw. Its called a tripper and will settle as much as 2inches above where it was poured. So if I lay pavers over your 4inch base my pavers will be upwards of 2inches above the others, and if I was a customer wanting that paver "look" patio and my contractor was pouring a concrete base, why not just stamp the pad and be done with it.

    In my area everything heavies and shifts around, we have a heavy clay soil with pockets of loam. Dry lay will heave as like concrete, This is my selling point of a dry lay over poured concrete, but dry lay is repairable as concrete patterns never match up or dyed color concrete never looks or fades correctly.

    With repair as well, both can not stand the ultimate test of using road salt on them. Though pavers offer better drainage than concrete does, as its all heaved and thrown out of pitch. Ice forms from and further damages slabs, if you'd like a example I invite you to drive Downtown Waukesha WI. Also the salts will rust your rebar and mesh, as steel rusts it expands thus deterating concrete internally, as road salt (NaCl) doesn't chemically react to water just lowering the freezing point will abosrb into pourous concrete, refreeze and "pit" the surface. Not to mention exposied aggerate concrete is hell on snow shovels, snow blower paddles, and cutting edges.

    Lastly I have not found a concrete sub contractor that will warrenty his work either.

    I'll end on a question though. Why does concrete explode during the summer? Heat build up?
     
  6. Joe Cement

    Joe Cement LawnSite Member
    Posts: 30

    It seems to me that u have much more clay. I work in beautiful sand most of the time. As far as finding a sub to warranty concrete you will not. If u did u would pay triple the price for them to be able to risk that. I tell my customers the concrete will crack but they stay as tight cracks and minimum. I don't really understand what u mean by concrete heating up n exploding. Also back to concrete as my base it does not matter to me if it cracks
    Posted via Mobile Device
     
  7. jreiff

    jreiff LawnSite Senior Member
    from MN
    Posts: 402

    Do you have any pictures of patios that you have done with your concrete base? Before, during, after pics?
    Posted via Mobile Device
     
  8. Joe Cement

    Joe Cement LawnSite Member
    Posts: 30

    Yes of course J
    Posted via Mobile Device
     
  9. jreiff

    jreiff LawnSite Senior Member
    from MN
    Posts: 402

    Well, would you care to post some of them to view???
    Posted via Mobile Device
     
  10. Joe Cement

    Joe Cement LawnSite Member
    Posts: 30

    Sure ill share. However you will have to give instructions for my wife to install them bc I'm no computer guy
    Posted via Mobile Device
     

Share This Page