Document QX0MRYomB65kkKo41Z0vRrew5

Form BCIS4 SON 6 JT phimtsb mu.* a. Bestwall - Certain-teed Sales Corporation^ FOR Paoli Lab. DATE ATTENTION OF Mr. J. R. Watt ANSWERING YOURS Dec. 20, 1957 FROM General Sales SUBJECT AOOUSTICAL PIASTER DICTATED BY C. E. Abbey - jam OFFICE CCs Kr. A. L. Meyer - Ardmore ; -M'*- Mr. 0. F. Grieve - Paoli Mr. H. D. Ohm - E. St. Louis Mr. C. C-. Shuttleworth - Paoli 'O I have a copy of your memorandum of December 11 to Shuttleworth. The experience with the material apparently satisfies the plasterer who used it. However, I was under the impression this was a spray on Job and I'm wondering two things. First, is the material entirely satisfactory for spray on and second, will a spray on application give the coverage you speak about in the last paragraph of your December 11 memorandum. If you think this material is so good with hand application, then I want to say in the literature we put out about it that it can be put on and do a very good Job by hand as well as being designed to be used with machine application. Paoli Lab, Mr* J* R. watt Beo* *0, 1957 General Sales AC33STICAL FL&STTH CCi Mr. a* L* Meyer Anbora Mr* G. F. criove - Paoli I5r* F* D* ohm ~ E* St* Mr* C* G* Shuttleworth - paoli C* I. Abbey Jos I ha?a a espy of paw assnr due f Baaamhiu 11 to Shottlseerth. The JJ* *BUfial **"*** --Urtim the pLaatopar rto wd it* However, I with iiLSTS** d + t24aga. First, is the arterial entirely satisfactory tap sprmr oa and aaeond, will a spray applioaiicn 6tr# ^ art*a you apart about la the laat paragraph of your Ucambar 11 If you think this aaterlal la ao good with H* Opllostlan* n tba literature ws pet out about it that it e ba^oton^d tea ^ bnd aa wall aa being rtssignad to be seed with maim ^jpHoatian it to ter in good Jed) Ijr SGP 0018740 Ardmore Hr. C. B, Abbey December 2h 1951 ` Messrs. A. L. Meyer - Ardmore 0. P. Grieve - Paoll H. D. Ola - St. Louis Paoli Laboratory ACOUSTICAL PLASTER J, R. Vatt - cv v The material is satisfactory for spray application. As you know it was developed mainly as a machine application plaster because most of this type (clay base) is applied in this manner. The material will, under proper conditions of miring and application, give the cover age shown in the last paragrapbi-af ajr letter of December 11. VO obtained this coverage an a slightly different formula, applied with a machine, on the M-17 school in St. Louis. However, as stated in y letter of December 11 I do not think the trade- should be told to expect this high a coverage figure but feel sure they can consistently get 9-10 yards per 1*0 lb. bag 1/2* thick which is more coverage than is obtained with most competitive materials. The material is entirely satisfactory for hand application. We assumed ycu know this as hand application is included in the instructions. Ve do feel that in the beginning at least the acoustical plaster should be sold by the Job as is dona with Xallte. There is s problem of ageing with this material. This is true of competitive materials. As time goes on we will develop more information on the ageing of the material under different conditions but at present ve think itsshould be kept in a dry warehouse and used within six seeks after it is manufactured. ** * SGP 0018743