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My driveway slopes down from street level to basement garage level. On
the house side of the driveway there is a stone retaining wall that will
need to be replaced soon. The wall height tapers from about 33 inches
(next to the garage) down to zero inches and the length if about 25 feet
or so.
I am thinking of installing a segmented retaining wall system.
Manufacturers I have noticed include Versa-Lok, EP Henry, Unilock, Alan
Block, Belgard, Keystone, Old Castle etc.
I have heard that Versa-Lok and EP Henry are the best, although I do not
think EP Henry distributes to New England. (I live in Mass, NW of
Boston.) Versa-Lok advertises that they do not need a foundation below
the frost line, and I assume others are similar. Instead you build one
course below grade and the wall system is designed to be flexible during
frost/thaw.
I am not sure if this is something I want to tackle myself or if I'll
contract out the job. On what hand I'd take a lot of pride in the
work and probably have some fun. The wall is not terribly long and is
only 33" max tall. But on the other, it seems to be more difficult
because the base of the wall slopes and I cannot excavate in front of the
wall because of the existing driveway.
Does anyone have any thoughts about what product(s) to use, some
realistic expectations of how to install with a sloping base, or what I
should look for in contracting the job if I go that route?
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Retaining Wall Systems 
