doingitmyself

Was trying to avoid the 100mm gravel gap as not too keen on the look, but better safe than sorry! Will absolutely splash out on that beautiful mat. Thanks all.

Hello everyone... with nice weather finally here I'll finally be building my patio next week. For info... - we have recently had an extension done; only 1.4m at the back where you can see the bifolds. - the old patio was destroyed of course - old patio did not have any drainage and we have had zero issues. Even with all the rain we've had in the last few weeks (in Berkshire), water drains away well. I am raising the base slightly to create a new patio so the floor level from inside to outside isn't too large. The distance below the DPC will still only be 90mm. I know the recommendation is 150mm, but PavingExpert says as long as the fall is 1 in 60 away and the paving sits under the sill, that's fine. What about the walls on either side of the bifolds? I've attached some pictures - please ignore the rubbish. It's a 19m2 square patio. There is currently a bed of sand (I think) on top of concrete base. I'll be back filling 150mm of type 1 using wacker plate, then 30mm mortar (6 part sand:1 part cement), topped with 20mm porcelain slabs, with the 1 in 60 fall. There is a gutter drain on the far right where I could run a slot drain, but if I don't need to, I'd rather not.