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Thread: Water leaching in
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18-09-2019, 07:19 PM #1
Water leaching in
Hi lads and lasses, is there anything I can coat walls of pond with to stop water leaching in from the ground around the pond walls, seems to becoming under the first course of blocks on top of the concrete, thinking of bitumen, gonna put insulation boards then fibreglass, but need to stop this water and let it dry out.
Any advice, recommendations welcome ???
Thanks
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freddyboy Thanked / Liked this Post
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18-09-2019, 08:56 PM #2
That’s a pain, assume you e got blocks up so can’t tank it now?
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18-09-2019, 09:23 PM #3
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freddyboy Thanked / Liked this Post
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18-09-2019, 09:56 PM #4
need a lower hole on the outside to sump pump away the ground water, has neath had rain that the other side of the bridge has avoided for a the last few weeks?
the slow pond build thread
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18-09-2019, 10:05 PM #5
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19-09-2019, 05:25 PM #6
Wouldn’t advise bitumen then fibre glassing, know of someone who lost all his koi taking that route.
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19-09-2019, 06:07 PM #7
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freddyboy Thanked / Liked this Post
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21-09-2019, 07:07 PM #8
Sovereign Chemicals K11 tanking slurry or equivalent, then fibreglass (would be best) Or epoxy paint covering.
I have used k11 before, its expensive. This stuff is much cheaper and gets good reviews:
KA tanking slurry
https://rover.ebay.com/rover/0/0/0?m...2F322991949521Last edited by Alburglar; 21-09-2019 at 07:10 PM.
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Tom Koi Thanked / Liked this Post
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22-09-2019, 12:37 PM #9
Last edited by Tom Koi; 22-09-2019 at 12:53 PM.
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22-09-2019, 04:51 PM #10
I built a workshop into a Hillside its underground On 3 sides. I used barrier mortar on the join where the concrete floor meets the walls. Then tanking slurry after that. It is bone dry since i did it.
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22-09-2019, 07:49 PM #11
I had this problem. Sump outside pond did not work for me. I used tanking slurry. Can't remember which type. Goole and you'll find plenty of options.
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22-09-2019, 08:00 PM #12
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freddyboy Thanked / Liked this Post
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22-09-2019, 11:02 PM #13
Yes i did grind out some mortar, before applying the barrier mortar but it is not really necessary. I also did slurry, then mortar, then slurry over the top. The barrier mortar was sovereign chemicals again, but not that expensive compared to the k11.
The mortar expands if any water tries to come through where the blocks meet the floor.
A proper damp proof course for a cavity wall would be 4 courses high, but it wasn't necessary in my case so i just went one block high on advice from a damp proofing specialist. He recommended the sovereign products too.
On a solid wall just go as high as the ground level.
Last edited by Alburglar; 22-09-2019 at 11:08 PM.
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22-09-2019, 11:31 PM #14
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24-09-2019, 05:44 PM #15
No. It goes on wet. The barrier mortar will actually stop water coming out a hose! There are a couple of youtubes.
Last edited by Alburglar; 24-09-2019 at 05:47 PM.
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24-09-2019, 06:45 PM #16
Last edited by Tom Koi; 24-09-2019 at 06:56 PM.
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24-09-2019, 07:16 PM #17
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24-09-2019, 07:41 PM #18
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freddyboy Thanked / Liked this Post
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24-09-2019, 10:46 PM #19
Checked out the video and it looks like I;ll have to render first then use the tank slurry etc??
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Running heater at low temp?
Covering the pond with polycarb should be enough to stop water temps dipping below 6C for the most...