Abstract: A method of including the selection of cementitious fiber wallboard panels coated on the exterior surface by a coating of water based acrylic to control the fluid absorption rate therethrough. Such wallboards are installed on a building frame with the adjacent edges of the panels forming narrow gaps for receipt of suitable caulk to such gaps and applying a high build flexible resinous latex emulsion over the coating and joints and allowing it to cure at a rate dictated by atmospheric conditions and the fluid absorption rate of such coating and tape.

Abstract: A method for forming single coat synthetic stucco finished exterior walls. Cementitious fiber wall board panels are installed on a building frame with the adjacent edges of the panels forming narrow gaps. Polyurethane caulk is applied to the gaps, and low profile fabric backed joint sealant tape is applied over adjacent edges of the panels to cover the gaps and the caulk therein. A high build flexible resinous latex emulsion is next applied directly over the panels and adhesive tape to form a synthetic stucco finish.