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Insulation, Building and Sound Deadening
Flax-li-num Insulating Company
.Chicago Office 228 North La Salle
Home Office and Factory
St. Paul, Minnesota
Manufacturers of FLAX-LI-NUM
New York Office Architects Building,
101 Park Avenue
Flaz-li-num is a thermal insulation and sound control material used for many years in various industries to meet existing insulation requirements. Flax-li-num. is a semi-rigid board felted from the long tough fibres of the flax plant, consequently Flax-li-num is durable and assures the user that the insulation will last as long as the building stands.
frame, brick, hollow tile or, veneer con structions, and to give the user the full benefit of its heat insulation and sound proofing qualities.
Flax-li-num was introduced in 1909, first, to insulate railroad refrigerator cars, and has extended its application to a variety of insulating services in residences and industrial buildings and in many specialty markets, such as iceless shipping containers and kindred products.
The use of Flax-li-num in buildings, brings definite economies in fuel and radia tion required, as well as the production and maintenance of healthful conditions. Heat transmission coefficients are given for various types of. walls and roofs.
Flax-li-num is vermin and rodent proof. It is guaranteed by the manufacturers never to fall down or become displaced in a building wall. As the material is of semi rigid type it cannot warp, break or crack. Flax-li-num should not be considered as a substitute for ordinary wood or metal lath, sheathing or other parts of a building construction.
The Flax-li-num insulation method has ^ been developed for roofs and walls of
To get the best service from Flax-li-num, specify the exact place where insulation is to go. The effectiveness of insulation is increased if applied between studdings, midway between the sheathing and lath and plaster for frame construction, of furred out on masonry construction. Flax-li-num for walls should. be at least
Y in. thick and for roofs l.in. thick.
The Flax-li-num method of application of insulating material to all types of con struction is fully covered in our booklet, "Heat Insulation for Houses"--A. I. A. File 37-b-l. There is also contained in this booklet the Flax-li-num radiation chart which greatly simplifies the accurate com putation of radiation where heat loss factors are known. A copy of this publica tion should be in the files of every engineer and architect, and will be sent on request.
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Flax-li-num Insulating Co. Insulation, Building and Sound Deadening
Heat Loss factors for various insulated'and uninsulated walls of stucco, brick and frame construction are fully covered in the publication "Heat Insulation for Houses."
Frame Walls
A-3. Standard frame construction. Sheathing, paper and siding . outside. Lath and plaster in side..... .......... ;................. ----.......255
These walls are listed below with their K values, showing how these values are substantially reduced by the addition of Flax-li-num in accordance with our standard specification which calls for Y in; Flax-li-num in side walls and 1 in; ceilings or roofs.
Stucco Walls
B-3. Same as above with Y in.
Flax-li-num added...,... .151
C-3. Standard frame construction, same as A-3, except plastered on lumber substitute_________ .216
D-3. Same as above with Y in.
Flax-li-num added..................... .136
E-3. Standard frame construction, same as A-3, except lumber substitute used for sheathing-- .229
A-l. Standard frame construction furred out over sheathing, metal lath and stucco. Lath and plaster inside.............. ............242
B-l. Same as above but with Y in.
Flax-li-num added....... ......
146
C-l. Standard frame construction
with Byrkett sheathing. Stucco
directly on sheathing. Lath
and plaster inside.-.............
.287
D-l. Same as above with Y in.
Flax-li-num added...... ..................161
E-l. Frame construction. Metal lath directly on studs. Stuccoed
outside and back-plastered. Lath and plaster inside. .357
F-l. Same as above with. Y in.
Flax-li-num added........................ 181
Brick and Tile Walls
F-3. Same as above with Y in.
Flax-li-num added..... .....
141
Roofs and Ceilings
A. Standard frame construction. Wood shingles, attic floor. ' Lath and plaster................ .......... 179
B. Same as above,, with 1 in. Flax-li-num under ceiling joist furred down for lath and plaster .104
C. Standard frame .construction, same as A, without attic floor. .284
D. Same as B, without attic.floor. .132
E. Standard frame construction, attic floor, tile roof__________- .163
F. Same as E, with 1 in. Flax-linum under ceiling joist furred down for lath and plaster.--.........098
A-2. Standard frame construction.
Lath and plaster inside. Face
brick veneer........................
.210
B-2. Same as above with Y in.
Flax-li-num added.........................133
C-2. 8 in. hollow tile. 4 in. Face Brick, plastered directly on tile .255
D-2. Same as above, but furred in side with 1 by 2 in., plastered
on Flax-li-num Keyboard.-___ .141
One of the fields in which Flax-li-num finds extensive use is in the insulation of industrial roofs, where it serves to reduce heat losses, secures greater comfort for workers and corrects condensation dif ficulties which hamper production in many instances.- It is also extensively used for sound control and acoustical correction.
E-2. Standard 13 in. solid brick wall, furred inside, lath and plaster .191'.
F-2. Same as above with Flax-li-num Keyboard as plaster base____1... .146
All details pertaining to the above uses are covered in the aforementioned publica tion, "Heat Insulation for Houses."