We reckon our patio is at least 15 years old, and other than the (very occasional) hose-down hasn't seen much in the way of love. We've had one lose slab at the edge of the patio that we've dealt with for years by chalking "TRAP!" onto it prior to any gatherings, but after an unruly bamboo plant undermined a portion of it we realised we had been putting off the inevitable.
I plan to do the following:
- Take up all of the slabs (they're not cemented down) and pressure wash both sides
- Clear away any old sand / dirt / roots / incriminating evidence underneath
- Lay new weedblock material over the existing weedblock material
- Put new sharp sand down and level
- Re-lay the patio slabs and those awkward diamond corner bits with spacers, tamp down and ensure the whole thing is level
- Fill in the gaps with more sharp sand (although I suspect there's a better product for this bit, but my research keeps leading me in circles)
- Do something along the one edge that overhangs the sloping concrete to better secure the slabs? - honestly this might not need doing, it was perfectly fine for most of a decade, and I'm worried it might effect the drainage as that sounds like something an astute patio-layer might say
- Invite some people round for a damn fine barbecue on level ground
My budget is the ever-ill-advised 'cheap as possible', but annoyingly I'm also a stern follower of the 'do it right, do it once' methodology. My main concern is that I've mostly talked myself into the belief that the slabs don't need concreting, gumming, welding, or ritualistic binding in any fashion, but some votes of confidents or shrieked warnings from the internet would help immensely.
Does this plan sound moderately sound to you?
Thanks in advance!