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PostPosted: Mon Jul 09, 2018 8:45 am 
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Hi there
I have a parasol pole sunk into a patio. The builders forgot it has to rotate so buried the mechanism. They’ve now dug around the pole to expose it so it works.

However, every time it rains the hole fills with water! You can see the tide mark on the photo. The pole and disc it sits on rotate. The bolts are stationary. A plastic cover hides the hole but does not prevent water ingress. It moves when the pole rotates.

A) how can I prevent, as much as possible, water getting in?
B) how can I protect the mechanism from water that does get in?

So far I’ve thought
A) a circle of some kind of sealant on the patio just inside the cover, to form a ridge that stops run-off getting in.
B) some kind of temporary sealant between post and cover, that can be removed for inspection.
B) smothering the whole mechanism in some kind of grease

Even if I go with this plan I don’t know the products to use. Or there may be much better solutions. Please help!!


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PostPosted: Mon Jul 09, 2018 11:40 am 
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Get the builders back to fill the hole, and attach the parasol to the surface. It's their mistake.
You're not going to satisfactorily seal it. It's always going to sit in a pool of water.
Although you can get waterproof grease to pack the wheel bearings of boat launch trailers etc. I'd fix the problem of the water being there in the first place myself.



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PostPosted: Mon Jul 09, 2018 12:51 pm 
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Thanks. But currently it’s bolted to a huge metal crossbar underground. Can I bolt it just into concrete? Would four bolts buried vertically in the filled-in hole (eg 10cm long?) be adequate to secure it (it’s one of those big cantilevered ones!)


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PostPosted: Mon Jul 09, 2018 3:50 pm 
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My solution would be to get some longer bolts and sleeve them in some s/s tubing of just the right length to reach ground level, (or very slightly higher), bolt the whole thing down and fill in the hole.

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PostPosted: Mon Jul 09, 2018 4:19 pm 
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ayjay wrote:
My solution would be to get some longer bolts and sleeve them in some s/s tubing of just the right length to reach ground level, (or very slightly higher), bolt the whole thing down and fill in the hole.

That's pretty well what I'd do too.
Could be a bit of a problem if they've used separate nuts on the back of the steel though.



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PostPosted: Mon Jul 09, 2018 5:04 pm 
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Dave54 wrote:
ayjay wrote:
My solution would be to get some longer bolts and sleeve them in some s/s tubing of just the right length to reach ground level, (or very slightly higher), bolt the whole thing down and fill in the hole.

That's pretty well what I'd do too.
Could be a bit of a problem if they've used separate nuts on the back of the steel though.


I have had that problem before. One tip if you think that is a possibility, only remove one bolt fully, then try and put it back. If you loosen them all you might be totally up the creek, if it's only one you can usually either get away without it or do a bodge fix.



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