1 . Application
The wall surface and moulding must be dry and free of dust. Priority One Moulding EPS mouldings are intended for use over the primary exterior weather barrier (ie. wall system). We recommend installing over the existing scratch coat, or over the EIFS wall system, in order to ensure that the building is sealed and conforms to your local building code. Priority One Moulding trims can be applied over masonry product as well.
2 . Adhesive
Apply approved adhesive to the exposed styrofoam back of the moulding using 3/8″ notched trowel. Approved adhesives include dry or wet primus, also known as acrylic base coats, available through your supplier of Priority One Moulding products. We have seen caulking used to apply and treat joints of Priority One Moulding and do not disapprove or approve of this method of application, but note that caulking has a limited life expectancy. The preferred adhesive is wet primus. Mount the moulding while scrapping any excess adhesive off.
3 . Stronger Mounting
Some pieces may require additional mounting strength while the adhesive sets up. For temporary attachment, the Wind-lock 302 plate (or similar) with appropriate fastener may be used and then removed prior to the finish coat. For mechanical attachment into masonry, a stub nail driven into the surface will serve as a temporary hold until the adhesive cures. For attachment into EIFS, use the Wind-lock M-1090 Insul-Tac as a temporary hold until the adhesive cures. Any damage or holes to the shape itself while temporarily fastening the shape, must be repaired prior to finishing treatment with an approved base coat.
4 . Joints
Various pieces of moulding can be joined to form corners, or run in straight lengths. To do this, the treatment of joints is most important and we recommend cutting the pieces with a diamond blade saw, or having Priority One Moulding manufacture the necessary returns and corners for your project. To treat the joints, we recommend that an acrylic base coat be applied over the joint after the joint is meshed with an approved mesh (both materials are available at your supplier of Priority One Moulding ). At this time, any imperfections and damage sustained while installing the pieces must be fixed and the joint should be sanded smooth to accept the final finish coat properly. The best method is to use wet foam brushes to feather out the primus on the joint. We are aware caulking is used on job sites and do note that caulking has a limited life. A sealant should be applied to the entire profile prior to whatever finish is to be applied.