Page 315 - Masonry and Concrete

Paving

314 CHAPTER EIGHT

A mortar set flagstone walk or patio
must be set on a reinforced concrete base
and is installed in much the same way as
rigid brick paving. A Type S or Type M
mortar works best. After the stone has
been set into the mortar bed and allowed
to cure for a day or two, fill the joints with
a thin mortar mix using a coffee can or
other small container that can be squeezed
to form a spout. Work the mortar into the
joints with the point of a trowel and use a
wet sponge or cloth to clean excess mortar
off the stone surfaces before it dries. Flag-
stone can also be laid on a dry cushion of 1
part portland cement and 3 to 6 parts
damp, loose sand with the joints filled
with the same dry cement and sand mix-
ture. After removing excess material from
the surface, spray the paving with a fine
water mist until the joints are completely
saturated. The paving must be kept moist
FIGURE 8-38 for at least 3 days to assure complete
cement hydration.
Flagstone walkway edge.

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