My clients like the look and durability of a traditional cement-based three-coat stucco finish, but they want it installed over a continuous layer of rigid foam. Can I simply install a double layer of Grade-D 60-minute paper over the foam before nailing up the lath, or are there other steps I should take?

A. Barry Jenkins of Southern Stucco in Knoxville, Tenn., responds: Normally a designer would specify EIFS cladding when both exterior insulation and a stucco-like finish are desired. The mixture of EIFS and traditional stucco you describe is possible, but it’s not a conventional installation with standard details. Here is the approach my company...

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