The situation is that my wife and I have decided to put a small patio out
back for grilling and such. The area is approx 12'x 9'. Our neighbors
across the street are in the process of putting in a pool and have found
that the previous owner had a thing for river rock and have been digging the
stuff up for the last two weeks.
I was thinking that the large flat rock would make for a nice patio and
an inexpensive route (they offered it to me for free). I have never done
anything like this before and I am assuming I am going to want to lay down
some concrete and mount the stones within the field. The area lies at the
base of a hill and although we have a rock wall dividing the hill from the
area the ground still gets quite damp. I am wondering if : 1. This is a
sound idea to begin with. 2. I stated concrete but is there something
better for an anchoring agent. 3. How would I prepare the ground, including
a base ie gravel. Also open to any tried and true replacements for the
Thanks in advance
and uncomfortable underfoot. We recently bought large slabs of metamorphic
schist for a similar sized patio. First, we dug out, and disposed of, about
a foot of existing clayey soil. Then flattened that area, staked in 2x8
pressure treated surrounding boards above the ground level, then packed in
about 9 inches of 3/4 inch aggregate (angular) rock, followed by 3-4 inches
of sharp sand. Both the aggregate gravel and the overlying sand, were
pounded flat with an 8x8 inch hand pounder (home depot). Once everything is
compressed, the stones were laid on the dampened sand. We used a material
called g-sand (used for infill work, and hardens slightly after being
wetted), to fill between the flat rocks. When finished, the top surface of
the rock was flush with the top of the surrounding PT boards. This makes a
better anchor than concrete, is better suited for your poor drainage area,
and later rock slab adjustments can be made when tree roots invade, unlike
concrete. It also provides a more comfortable surface than concrete. For
more info, go to Lowe's or HD and steal a glance, or buy, the how-to book on
paths and patios - an excellent reference on how to build this kind stuff.
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