Document Z8Xo4wNXG0EeRKqb8B8Lz59zd

ST0367855 DOW CHEMICAL U.S.A. -- UOW-2951 March 10, 1976 / TO: JOHN GALLOWAY CC: M. W. HEALY R. P. HEEND T. E. WERKEMA J. S. LAING R. R. ADOLF RE: STYROFOAM FOR BEACH HOUSES Dear John: At the last Fire Committee meeting I reviewed the application where STYROFOAM SM brand insulation is applied to the underside of beach houses built on pilings. After considerable discussion, it was decided that a 15 minute thermal barrier would be required as the exterior finish. The following materials would be acceptable: i/ **< t -V/ U> 5/8" exterior grade plywood 1/2" exterior grade gypsum board Cement asbestos board, 1/4" thick, will not be acceptable. It would be appropriate for you to convey this information to your distributors via a broadcast. If you have any need for further discussion, please give me a call. Best regards, Dave Ledvinka rw AN OPERATING UNIT OP THE DOW CHEMICAL COMPANY 0216 127