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Insulation, Building and Sound Deadening Wood Conversion Company General Office and Factory at Cloquet, Minnesota Manufacturers of BolsomWool Blanket District Sales Offices Chicago, III------------ 1908 London Guaranty Bldg.- New York, N. Y.........................3107 Chanin Bldg. Detroit, Mich______________ 515 Stephenson Bldg. Minneapolis. Minn.................. ...... 414 Baker Bldg".* Kansas City, Mo231 West 47th St. San Francisco, Calif........................................ ...149 California St. Seattle, Wash................................... 621 Ligget Bldg. Also Mfgrs. of NU-WOOD the All-Wood Insulating Wall Board and Lath BALSAM-WOOL Standard Building Insulation is a flexible insulating blanket made from pure wood fibers in fleecy wool form, permanently matted together be tween two sheets of asphalt-coated, tough, flexible, creped Kraft paper. These pat ented crepe paper liners are capable of 25 per cent stretch which makes them virtually puncture proof, and the fact that these liners are not stitched renders BALSAM-WOOL windproof and water proof. In the process of manufacture, BALSAM-WOOL is chemically treated to make it fire' resistant, vermin and rot proof. It is clean, odorless and sanitary-- a Weyerhaeuser product. Sizes--BALSAM-WOOL for building insulation comes in three standard widths, 17, 25 and 33 in. and in two standard thicknesses, and full inch. It comes rolled, wrapped and sealed. 3^ in. BALSAM-WOOL weighs 240 lb. per 1,000 sq. ft., and full inch BALSAMWOOL weighs 370 lb. per 1,000 sq. ft. Application--In frame construction, BALSAM-WOOL 17 and 25 in. wide is Test Results Hot Plate Method Material Thermal Mean Conduc Temp. tivity Authority Deg. Fahr. llour 70 0.246 90 0.27 Standards Hot Box Method Description Mean Temp. Deg. Fahr. Heat Trans mission Factor U Authority %' Wood Lath and Vfl' Piaster. fir sheathing, building paper, 4' Up siding, insulation **C, flanged midway in air space between studding. 40.2 0 115 Rowley Taken from Journal of A. S. H. A V. E., VoL 34, No. 7 (July, 1928), Page 536. Insulation "C"--H in BALSAM-WOOL applied between the studding, joists or roof rafters, flanged in the air space be tween sheathing and plaster. BALSAMWOOL 33 in. wide is applied to the inside face of the studding or joists with furred out lath and plaster. In solid masonry construction, 17 or 25 in. BALSAMWOOL is applied by flanging between fur ring strips 16 or 24 in. on center. 33 in. BALSAM-WOOL is applied with either single or double furring strips. Efficiency--BALSAM-WOOL has been tested for insulating efficiency in various laboratories throughout the country. In a building insulated with BALSAM-WOOL, 20 to 35 per cent less radiation and boiler capacity is required. The coefficients given on the next page are recommended for use in computing the heat loss through sections insulated with BALSAM-WOOL. A com plete file showing coefficients and the method of computing radiation require ments and fuel saving (A.I.A. File No. 37-b) will be mailed on request. 730 I Wood Conversion Company Insulation, Building and Sound Deadening Heat Transmission Coefficients for Building Construction Insulated With BALSAM-WOOL Section No. TYPE OF CONSTRUCTION Furred Plastered Wood Direct Lath and Plaster /2' B-W Single Furring* Vi' B-W Double Furringf 1' B-W Single Furring* 1' B-W Double Furringf Walls. Masonry | 9* Brick........................................ 0.332 2 13' Brick...................................... 0.263 3 18'Brick.................................... 0.208 4 6' Hollow Tile, Stucco.................. 0.299 5 8' Hollow Tile. Stucco.................. 0.273 6 0.193 7 4'Brick Veneer, 4'RT.............. 0.277 8 4'Brick Veneer. 6' H.T.............. 0.246 9 4'Brick Veneer. 8'RT.............. 0.228 10 4'Brick Veneer. 12'H.T............. 0.169 11 12' Stone.............. ....................... 0.415 12 0.356 13 20* Stone........ ...................... 0.311 14 0.437 IS 0.395 16 12* Concrete, Stucco...................... 0.361 17 16' Concrete. Stucco...................... 0.308 18 0.348 19 12* Concrete Block........................ 0.271 20 6' Cinder Block. Stucco................ 0.328 21 8' Cinder Block. Stuceo.. .......... 0.276 22 0.210 23 4' Cut Stone Veneer. 9* Brick__ 0.300 24 4' Cut Stone Veneer, 13' Brick.'... 0.234 0.209 0.179 0.152 0.1% 0.184 0.144 0.186 0.171 0.162 0.130 0.239 0.218 0.200 0.246 0.232 0.220 0.199 0.215 0.163 0.207 0.185 0.153 0.1% 0.165 0.141 0.116 0.127 0.107 0.113 0.097 o;i35 0.112 0.129 0.108 0.108 0.093 . 0.130 . 0.109 0.122 0.104 0.118 0.100 0.100 0.087 0.154 . 0.125 0.145 0.119 0.136 0.113 0.157 0.127 0.151 0.123 0.146 0.120 0.136 0.113 0.144 0.119 0.128 0.108 0.140 0.116 0.129 0.108 0.113 0.097 0.134 0.112 0.119 0.101 0.112 0.103 0.093 0.108 0.104 0.090 0.105 0.100 0.097 0.084 0.120 0.114 0.109 0.121 0.118 Q.llS 0.109 0.114 0.104 0.111 0.104 0.093 0.108 0.098 0.0% 0.089 0.082 0.093 0.090 0.079 0.091 0.087 0.084 0.075 0.102 0.098 0.094 0.103 0.100 0.098 . 0.094 0.097 0.090 0.095 0.090 0.082 0.093 0.085 -, . Section No. TYPE OF CONSTRUCTION Not Insulated .ftt 1' B-Wt Walls. Frame 25 26 27 0.227 0.216 0.257 0.122 0.118 -0.130 0.099 0.097 0.105 Ceilings: 28 29 30 0.502 0.234 0.202 0.172 0.124 0.114 0.131 0.101 0.094 Partitions: 31 32 33 0.502 0.251 0.31** 0.172 0.131 0.128 0.104 0.181* 0.135* Roofs: 34 35 36 37 38 39 40 41 0.258 0.213 0.483 0.246 0.515 0.259 0.549 0.262 0.130 0.117 0.170 0.127 0.174 0.130 0.177 0.131 0.105 0.097 0.129 0.103 0.131 0.105 0.134 0.105 {Roof and Ceiling Combined--Use Ceiling Area: 42 ` 0.289 0.137 0.110 43 0.174 - 0.105 0.086 44 Asphalt or Asbestos Shingles, Wood Lath and Plaster Ceiling, No Attic Floor.. 0.297 0.139 0.111 45 0.177 0.106 0.089 46 0.305 0.141 0.112 47 0.160 0.107 0.089 Floors: 48 49 50 0.440 0.339 0.270 0.164 "0.126 0.148 0.116 0.133 0.107 Applied with one air space. tApplied with two air-spaces, except where noted. Plastered Direct. iFigured on basis of H pitch roof; sufficiently accurate for roofs of ) to H pitch. 731