FIRE TESTING
STRUCTURAL INSULATED PANELS (SIP's)

Numerous tests have been performed on SIP's and SIP components. These tests include the following:

According to current codes and NER-467, panels made with a foamed plastic core must be covered with a 15-minute thermal barrier. This is defined as Y2" gypsum board or equivalent. Equivalent materials could be 5/8" plywood or 1" x 6" T&G. In any event, seek approval on all equivalent materials from local code officials. The Design U532 classification applies to w. H. Porter, Inc., exclusively. Specific instructions relative to installation of Type C gypsum board, use of dimensional lumber splines and joint sealing must be followed.

1. Building Units* Composite panels consisting of a nom. 5-1/2 in. thick polystyrene foamed plastic core faced on both surfaces with min. 7/16 in. thick oriented strand board. Building Units* loaded to a max of 1800 lb. per linear foot which is 60 percent of recommended axial design load.

W H PORTER INC — Type Porter Structural Insulated Panels.

2. Studs and Bearing Plates Nom. 2 by 6 in. thick No. 2 lumber installed in Building Units* (Item 1) in pre-cut channels. End stud and bearing plate secured to the oriented strand board with 1-5/8 in. long ring shank nails spaced 12 in. OC along the edges on both faces.

3. Gypsum Board* 5/8 in. thick, 4 ft. wide, applied vertically installed with 1-5/8 in. long high/low bugle-head steel screws spaced 8 in. OC along the edges and 12 in. OC in the field. Vertical joints over vertical joints of Building Units* (Item 1). Gypsum Board joints covered with joint tape and joint compound. Screwheads covered with joint compound.

CANADIAN GYPSUM COMPANY — Type C.

UNITED STATES GYPSUM CO — Type C.

USG MEXICO S A DE C V — Type C.

*Bearing the UL Classification Mark

Copyright: 07/26/2006