(a) Approval by Building Inspector. Use of exterior wall insulation and finish systems shall be approved by the Building Inspector in a preliminary review proposal, if the use of expanded polystyrene insulation board as a base for the finish coating of acrylic-based adhesive with Portland cement is proposed. These systems are susceptible to impact and may be affected by their proximity to grade conditions.
(b) Installation. Details shall describe the method of construction to be used to avoid edge damage by moisture, to avoid substrate joint separation and to protect against impact damage. Heavy duty reinforcing mesh shall be used for all corners, joints and seams to counter stress points as well as to provide protection for impact locations.
(c) Approval of Color and Texture; Coating Specifications. The color and the texture shall be approved before construction with actual samples provided.
The flame-spread ratings, as per ASTM E84-1987 (see Appendix A) for the coatings for these systems shall be less than twenty-five.
(d) Exception. Installation of acrylic-based adhesive-bonded Portland cement finishes that do not make use of foam-base materials, need not be approved prior to construction. The approved substrate for this procedure shall be either brick, unit masonry or concrete.
(Ord. 1992-101. Passed 1-14-92.)