Document Z4K938xVYJ7936rgvadyGJD7Y

BESTWALL GYPSUH CO. TANT FOR PAOLI DATE Feb. 13, 1959 ATTENTION ol Hr. C. 0. Shuttleworth ANSWERING TOURS 6, --------- ---- -------------------------------- '..................................... , cet Messrs. C. E. Abbey - Ardmore S. C. Marshall * Cleveland Bob Chase -" John Porter - " 0. F. Grieve - PaoU H. J. Zelms - Ft. Dodge Jim Harries - Ardmore FROM Paoli Lab. SUBJECT TRIP TO NEWARK, OHIO DICTATED HT J. R. Watt - md Ret Bestwall Light Acoustical Plaster At the request of Mr. to observe the application of BW Light Acoustical. As a matter of record, 1 will review the past history of this piaster! It is part of two shipments, both made about the first of June 1958. One hundred bags went to Marion Bldrs. Supply, Columbus, Ohio. ConyTaint No 175 covering this shipment states material was defective due to dark color, excessive shrinkage cracks and rust spots. Fifty bags were shipped to Klinker'a Bldrs. Supply, Waverly, Ohio. Complaint No. 171* covering this shipment states it is defective because it wouldn't dry, was very difficult to apply, fell off the ceiling, impossible to darby, and excessive fiasuring was encountered. Complaint reports show both shipments to be from Ft. Dodge, but our records indicate one was from Grand Rapids* On both jobs, it shows a total of 2u bags were used. At the time of the complaint, a bag from each shipment was sent to Paoli where were tested and mash: ne applied ho standard gypsum basoeoat in our shop. Both bags were found to be entirely satisfactc After several months, the balance of the plaster at Waverly was moved to Columbus) both shipmsnta then being stored at Marion Builders Supply. Recently, twenty-five bags were shipped from Columbus to K&Q Lbr. Co., Newark, Ohio. It was then arranged for Hr. Jim Burkhaa, piaster^Newark, Ohio, to try this plaster and at that time, Mr. Chase called requesting that someana from Paoli be present when it was tried, which was in accord with what we had previously suggested. Messrs. Chase, Porter and I met Mr. Burkhaa an the job which was a dental clinic being built in Newark. The gypsum basecoat (Lite-Mix) had been applied about five days previous. It was nearly dry though not bone dry. One bag of acoustical was mixed In a mechanical mixer. After approximately five ari notes mixing, the mortar beeves fluffy and plastic feeling as it should. Approximately one-eighth inch was applied to the ceiling of one small room. Application was satisfactory; it was rich working) and there were no drop-outs or blisters. Dus to the thin application, it took up fast. After about fifteen minutes, the surface was trowelled smooth to remove cat faces, etc. The owner wanted a textured finish and no spray equipment was available, so a texture was obtained by dashing soma of the mortar on, at a thin consistency, with a whisk brtxxn. This, was done about fifteen minutes after the final trowelling. It gave a texture which Mr. Durkham felt would be acceptable to the owner, while sound absorption apparently is not going to be required, I requested that he apply the basecoat acoustical full 3/8" thick to the ceiling of another small room, which he did. This applied satisfactorily with no blisters or drop-outs | in fact, Mr. Burkham seemed well pleased with the way it worked. It was darbied after 10-15 SGP 0018987 -2- minutes and would still haws been alright to darby ten or fifteen later* He finally decided he would apply the full thicknesst at least In the corridors* If the owner accepted the texture in the first room and agreed to using acoustical plaster finish* In the corridors* there were several spots rtowlng rust due to exposed metal lath* It was explained how to treat these spots to prevent the rust coning through the acoustical plaster* He did not want to apply aty more until it was accepted by the owner* Whan we left* both ceilings looked fines though it was too early to determine the extent of shrinkage or flssurlng* Mr* Chase la to send a further report to ell concerned next week* after checking the job again* In ry oplite* this plaster is amply rich working and completely satisfactory* even though It la now over eight months old* I might add that Messrs* Chase and Porter also feel that it is entirely satisfactory. Mr. Burkham Intends to do all the ceilings In the dental clinic with this plaster* If accepted by the owner* and to use it In his own home* TMy should use the twenty-five bags at KbQ Lbr., or more* depending on the thickness applied* we explained that this type acoustical did not result In a ba^d finish* but he still wants to put It on the dental clinic and his beam* both of which have eight-foot ceilings* Will Mr* Chase please sent his report soon as possible* covering further observations of the ceilings involved together with further ooanents of the plaster* such as shrinkage* drying time of thicker application* color and appearance of the first celling applied* sto* Mr* Burkham uses Lite Mix and Satin Spar gauging practically exclusively* He said lately eons of the Lite Mix had been too fast setting* Mr* Chase is to advise the plant to ftdp about thirty minutes to one hour longer set on future shlpnants* . .. --- After leaving' the job* we otiled on K&Q Lbr* Co** where we talked to Mr* Chans* Thomson* In checking his warehouse* we noted that he was not properly rotating Ids' stock of Lite Mix* He had Lite Mix maanfactuxed In Hoveaber and Deeariwr* and one of the bags found at the dental ollnle was manufactured la January* VIS suggested that he rotate his stock* as this could, be the reason for the quick set trouble encountered by Mr* Burkham* which he agreed to do* JHI'/md O to 7 /cfo SGP 0018988