How rain-proof are paved areas?

Not much I guess, but here we go anyway.

Here's our dilemma. The worst water-logged area around our house happens to be exactly where our ginormous water tank is with all of its glorious pipes etc., all squashed against the house wall.
There are really lots of very shallow pipes in this small and flat area. We are struggling for some falls, so the pipes are shallow and it is almost impossible to grade this area as the fence is only 2.2 m away.

So, an obvious option is to pour some concrete along the house slab, to protect the slab and prevent capillary action. But this would be pouring concrete over hard clay with plenty of 'important' piping underneath.

So, we were thinking that some large pavers could be a substitute, but only if cut very neatly and tightly around the pipes and sloped away. But what do we do with the joins? They would obviously let the heavy rain in (under the pavers). Can they be filled with some Sikaflex or similar to make them perform more like concrete? (even if we have to re-apply it every year or so). Or even put some builders plastic under the pavers. The area is only about 1.5 m2.

Help!!!!!!!

I think you are worrying too much Lex.

A Clay soil which is too dry is as bad as one that is too wet. Ordinary paving will keep enough moisture out

I agree with Bashworth. We have VERY heavy clay and no fall to speak of - our block is virtually flat. We haven't had any issues at all with drainage though. The paving we had installed in our entertaining area has a slight fall engineered to ensure run-off is directed away from the house. Paving in the rest of the yard is step stone pavers in toppings (finely crushed gravel), and we never have water pooling, in spite of the clay base.

If you have a serious problem, you could perhaps install some ag pipe under your paving?

Thannks, guys
Kek, do you have any subsoil or other drainage somewhere?
Had another look at this today and this is actually more like a big dip. We can't build this up because of the weep holes. Whatever we install, it will have to be right under the weep holes so that the area can slope away at least a bit. Also not helping is the smarty neighbour who decided to dump his small roof run-off exactly into this dip (he is a bit higher than us) and is denying any wrongdoing When it rains, the water sits in this little lake of ours.

Yeah, you are over thinking ot all a bit.
Just smash down some pavers and maybe do similar to Keks place with some gravel between them. Do them down on a good bed of yellow brickies sand and the pavers get easier to lay and drainage is better.

There will be no point in chasing a water proof option because no matter what you come up with, it won't work.

Yeah, you are over thinking ot all a bit.
Just smash down some pavers and maybe do similar to Keks place with some gravel between them. Do them down on a good bed of yellow brickies sand and the pavers get easier to lay and drainage is better.

There will be no point in chasing a water proof option because no matter what you come up with, it won't work.