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HOLE IN CONCRETE PLANTER

sarahchall38sarahchall38 Posts: 7
edited May 2022 in Problem solving
Hi, I bought 2 concrete planters purely to use as solar water features. I didnt realise or look hard enough to see water would run straight through the "plug hole surround". What would seal concrete and do you suggest I seal the whole interior or just around the join please? Someone mentioned continually holding water might damage the concrete. I had to save up hard for these so I'm hoping they'll stand up to the job! Thank you. 

Posts

  • Blue OnionBlue Onion Posts: 2,995
    Marine silicon sealant?  It comes in a small tube for jobs like that.  Really clean the surface and wait whatever the recommended time prior to filling.  

    You could paint the inside surface with some sort of swimming pool paint, that would help seal the concrete.  
    Utah, USA.
  • raisingirlraisingirl Posts: 7,093
    Or you could buy a couple of ceramic tiles and use tile adhesive and grout to fix them in
    Gardening on the edge of Exmoor, in Devon

    “It's still magic even if you know how it's done.” 
  • Pete.8Pete.8 Posts: 11,340
    I think the silicone sealant would be the best option.
    It's worth bearing in mind that if the sides are straight and water freezes in them during winter it may crack the pots - in much the same way as an outside water pipe can split if it freezes.
    Something like a punctured tennis ball floating in it over winter should give enough protection - as the water freezes and expands it will squash the tennis ball and not the sides of your pot.

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • PlantmindedPlantminded Posts: 3,580
    These planters are made in two pieces for transport and ease of moving, plus to allow drainage.  Before you seal it, make sure it's in the final position you want it because it will be heavy when combined!
    Wirral. Sandy, free draining soil.


  • sarahchall38sarahchall38 Posts: 7
    Pete.8 said:
    I think the silicone sealant would be the best option.
    It's worth bearing in mind that if the sides are straight and water freezes in them during winter it may crack the pots - in much the same way as an outside water pipe can split if it freezes.
    Something like a punctured tennis ball floating in it over winter should give enough protection - as the water freezes and expands it will squash the tennis ball and not the sides of your pot.
    That's a very useful tip. Thank you
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