Figure 3. The 12-inch-thick foundation wall was poured with an 8-inch-wide shelf to support the stone veneer. Stego Wrap was run up the foundation&rsquo;s exterior face and then folded onto the stone shelf. To protect the Stego from puncturing during backfilling, a dimpled drainage mat was installed against the wall. Later, 12-inch-thick EPS foam would be installed on the foundation&rsquo;s interior, which would create a continuous insulation plane from the foundation up to the framed wall.