My drive is 30 feet long and slopes to the door with a drop of 4 feet. (steep)
Current surface is 3x2 paving but these have become broken over the years.
The rain collects at the base of the drive but seems to manage to seep away before flooding my garage. There is a water gulley near but the water seems to pool away from it.
Builders have quoted for the 57square metre job and all have said 3" hardcore, 3" concrete, 2" screed and then the concrete blockpaving.
WHERE does all the water go if they put a concrete base in the drive. From my perception, it will run under the blocks, soak the sand but can't go any further.
I read the make -up should be: 150mm of MOT type1 sub-base, whacked and then sand and blocks but builders are leading me away from this saying it will sink or rut, best put concrete in to be safe!.
My paving hasn't sunk over 25 years!
I don't want to flood my garage, and there is a storm gulley at the bottom of the drive. Should I be putting a concret layer in or beef the sub-base up with good compact dolomite.