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Posted: Sun Nov 01, 2009 6:42 pm
by klp
Hi, I want to flag my back garden and I am not sure what drainage system to use, my garden runs downwards away from the house, if i dont put any drainage at the bottom of the garden i am sure the water will build up into a pool.
Posted: Sun Nov 01, 2009 6:56 pm
by Dave_L
Soil free draining?
Aco channel drains and a soakaway come to mind.
Need more info really.
Posted: Sun Nov 01, 2009 7:07 pm
by klp
Dave_L wrote:Soil free draining?
Aco channel drains and a soakaway come to mind.
Need more info really.
Hi Dave,
My garden is currently fully turfed, I plan to cover this with corse sand then flag straight on top, I thought about digging a trench along the bottom of the garden putting in a pot soak away drain, cover this with gravel then cover with a grid.
Do you think this would work???
Thanks
Posted: Sun Nov 01, 2009 7:13 pm
by Dave_L
You need to excavate at least 150mm below finished level and install a subase first!
Posted: Sun Nov 01, 2009 7:22 pm
by klp
Dave_L wrote:You need to excavate at least 150mm below finished level and install a subase first!
I put down the turf myself 6 years ago and dug out about that depth, put back a corse top soil and spent a whole day with a wacker plate leveling the ground, if i remove the turf would that be ok, or will i still have to dig out again?
Posted: Sun Nov 01, 2009 7:26 pm
by Dave_L
No, proper subase required.
Posted: Sun Nov 01, 2009 7:31 pm
by klp
Dave_L wrote:No, proper subase required.
ok thanks, if i dig then use a sub base, what drainage would you recommend, and how would it be installed?
Posted: Sun Nov 01, 2009 7:32 pm
by rab1
as dave said, dig it out. soil moves,settles. compacted type1 doesn't
Posted: Sun Nov 01, 2009 9:12 pm
by Mikey_C
soak away, size of which will depend on size of area to be drained and local ground conditions, use the site index to search for a whole page dedicated to soakaways.
Posted: Mon Nov 02, 2009 12:25 am
by Bob_A
Just so happens I've been reading that very page
http://www.pavingexpert.com/drain08.html
My proposed patio will also slop away from the house.
I'm going to use this
http://www.pavingexpert.com/drain14.htm