2 layers of liner better then 1?

Discussion in 'Pond Construction & Equipment' started by Brilis, Jul 3, 2018.

  1. Brilis

    Brilis

    Joined:
    Jul 3, 2018
    Messages:
    31
    Likes Received:
    11
    Hey guys. I am in process of of ripping out my smaller 500 gallon or so pond and replacing it with a 10 ft by 10 ft pond. I am a mech contractor and have a roll of liner left over. Would it hurt to cut a few sections and use it under my 15 by 15 liner.

    I was thinking of cutting a piece for the floor and maybe some for the shelves. Then putting down my underlayment.

    Just to make it a little stronger.

    I used to go on this forum some time ago but it was with another email that I no longer have or use.

    Thanks.

    Brian
     
    Brilis, Jul 3, 2018
    #1
    1. Advertisements

  2. Brilis

    Lisak1

    Joined:
    Oct 28, 2013
    Messages:
    6,935
    Likes Received:
    7,787
    Location:
    Northern IL
    Welcome!

    It wouldn’t hurt at all! We used scrap pieces of liner under big rocks as extra padding - same idea.
     
    Lisak1, Jul 3, 2018
    #2
    1. Advertisements

  3. Brilis

    Brilis

    Joined:
    Jul 3, 2018
    Messages:
    31
    Likes Received:
    11
    Thanks!! I have very sandy, rocky soil and lots of roots here in NJ. Very hard to have good strong shelves. They want to collapse hah.

    What can be done about that if anything?
     
    Brilis, Jul 3, 2018
    #3
  4. Brilis

    Mmathis TurtleMommy

    Joined:
    Apr 28, 2011
    Messages:
    9,785
    Likes Received:
    5,587
    Location:
    NW Louisiana -- zone 8b
    Hello and welcome!

    I’m no pond-construction expert by any means, but what about using concrete blocks reinforced with rebar for the shelves? I have the opposite of your problem: clay. Different characteristics, but similar problems. I ended up using cinder blocks to make a collar around the entire pond and so far, so good.
     
    Mmathis, Jul 3, 2018
    #4
  5. Brilis

    sissy sissy

    Joined:
    Jan 17, 2011
    Messages:
    31,320
    Likes Received:
    14,351
    Location:
    Axton virginia
    you could get water trapped between the liners and cause a bubble as long as it is pieces it will harm nothing .I did it because moles chewed 1 of my liners .Put a triple liner on the bottom and on the sides and the underlayment .I put milky spore down to help kill the grubs also
     
    sissy, Jul 3, 2018
    #5
  6. Brilis

    Brilis

    Joined:
    Jul 3, 2018
    Messages:
    31
    Likes Received:
    11
    Thanks all. Could you just dig your pond down to the depth you want, mine is 30 inches. Then put the concrete block in right against the dirt pond walls at different levels. Then cover it with underlayment and then liner?
     
    Brilis, Jul 3, 2018
    #6
  7. Brilis

    sissy sissy

    Joined:
    Jan 17, 2011
    Messages:
    31,320
    Likes Received:
    14,351
    Location:
    Axton virginia
    why do you need concrete block the water in the pond will hold back the dirt
     
    sissy, Jul 4, 2018
    #7
    qclabrat likes this.
  8. Brilis

    qclabrat

    Joined:
    Dec 6, 2016
    Messages:
    661
    Likes Received:
    363
    Location:
    NJ
    ^this, I've got north Jersey clay, you must be south with the sand. Make your sides and shelves with concrete blocks then fill in as needed with dirt. If you don't the sides could collapse and you'd lose your shelves for plants and such.
     
    qclabrat, Jul 4, 2018
    #8
    Mmathis likes this.
  9. Brilis

    addy1 water gardener / gold fish and shubunkins Moderator

    Joined:
    Jun 23, 2010
    Messages:
    33,635
    Likes Received:
    18,450
    Location:
    Frederick, Maryland
    Welcome back @Brilis I used carpet pad under my liner. We are clay and shale, more shale then clay.
     
    addy1, Jul 4, 2018
    #9
  10. Brilis

    GBBUDD

    Joined:
    Dec 16, 2017
    Messages:
    1,273
    Likes Received:
    1,454
    Location:
    Ct
    Not always sissy it greatly depends on the soil. sand for instance is one soil type water may not hold back.
    Thumbs up
    Make sure when your done to remove any sharp edges
    A few other ideas is
    one to use a heavier underlayment
    Place sand layer at the bottom
    and a third I just found is, roofing has a product it's a 1/8" sheet of fiberglass coated in a asphalt base coating I wish I had found it earlier. it's tough stuff!
    one no grub mole or termite would try to eat through it and it will definitely cover some sharp edges it was only $10.00 a sheet I used it in my bog against the mafia blocks. you can find more in my blog Going for it! phase one 12,000 gallon pond. in the pond construction forum[​IMG][​IMG]
     
    Last edited: Jul 4, 2018
    GBBUDD, Jul 4, 2018
    #10
  11. Brilis

    Brilis

    Joined:
    Jul 3, 2018
    Messages:
    31
    Likes Received:
    11
    Thanks for all the great ideas. I am actually in north Jersey, Bergen County. Soil very sandy and rocky. It not pure sand but a good mix. Very rocky type sandy soil. Deeper I dug, more sandy it got. I am really torn if I should take a shot with the shelves I have now or wipe them out and put in block.
     
    Brilis, Jul 5, 2018
    #11
  12. Brilis

    Lisak1

    Joined:
    Oct 28, 2013
    Messages:
    6,935
    Likes Received:
    7,787
    Location:
    Northern IL
    @Brilis - are there any local pond builders in your vicinity? You could check with them to see how they handle construction. Are you able to step on the shelves with confidence, or will they fall away beneath your feet? I'm wondering if rock walls would work.
     
    Lisak1, Jul 5, 2018
    #12
  13. Brilis

    GBBUDD

    Joined:
    Dec 16, 2017
    Messages:
    1,273
    Likes Received:
    1,454
    Location:
    Ct
    well if you post a few pics of the soil pond and shelves we can help more ... or less
     
    GBBUDD, Jul 5, 2018
    #13
  14. Brilis

    Brilis

    Joined:
    Jul 3, 2018
    Messages:
    31
    Likes Received:
    11
    Can anyone assist me in how to post pictures? Thanks.
     
    Brilis, Jul 5, 2018
    #14
  15. Brilis

    sissy sissy

    Joined:
    Jan 17, 2011
    Messages:
    31,320
    Likes Received:
    14,351
    Location:
    Axton virginia
    from NJ myself Edison and my son works up there for king high towing
     
    sissy, Jul 5, 2018
    #15
  16. Brilis

    Lisak1

    Joined:
    Oct 28, 2013
    Messages:
    6,935
    Likes Received:
    7,787
    Location:
    Northern IL
    Below the box where you type your reply to this post ou will see three "buttons" - Post Reply, Upload a File and More Options. Click on upload file. I find it's easiest if the photo I want to post is on my desktop already, but I store all my photos in the cloud so I have to download them to the computer first.

    Hope that helps!
     
    Lisak1, Jul 5, 2018
    #16
    sissy likes this.
  17. Brilis

    sissy sissy

    Joined:
    Jan 17, 2011
    Messages:
    31,320
    Likes Received:
    14,351
    Location:
    Axton virginia
    before you post you will see post reply then upload a file and you click on upload a file and it will go to your pics on your puter ,cell phones not sure about
     
    sissy, Jul 5, 2018
    #17
  18. Brilis

    Brilis

    Joined:
    Jul 3, 2018
    Messages:
    31
    Likes Received:
    11
    Hope this works hah.
     

    Attached Files:

    Brilis, Jul 5, 2018
    #18
  19. Brilis

    Brilis

    Joined:
    Jul 3, 2018
    Messages:
    31
    Likes Received:
    11
    More
     

    Attached Files:

    Brilis, Jul 5, 2018
    #19
  20. Brilis

    Brilis

    Joined:
    Jul 3, 2018
    Messages:
    31
    Likes Received:
    11
    The light colored sand on the bottom was from my smaller pond install and not part of the soil. I added it for the bottom of my smaller pond which was removed.
     
    Brilis, Jul 5, 2018
    #20
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.