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1948-49 Theatre Catalog, 7th Edition, Page 159 (148)

1948-49 Theatre Catalog, 7th Edition
1948-49 Theatre Catalog
1948-49 Theatre Catalog, 7th Edition, Page 159
Page 159

1948-49 Theatre Catalog, 7th Edition, Page 159

{SS AN EXAMPLE of before (above) and after (below) the application of this asbestos roof coating. there Is presented the case of the Sunrise Building in Rockville Center, Long Island, New York. In the before picture can easily be seen the joints in the old roofing material and the many places where it has earlier been patched. The after picture shows a smooth evenness, with hardly c: trace of old root.


instance engineers employed electronics and found that, by subjecting the asphalt (mixed with water) to 32,000 volts of electricity, there was brought about a satisfactory separation of the water (containing the impurities) from the asphalt, leaving the latter' in a pure state, thus preserving its elasticity.


The next most desirable attribute of a roof coating is strength, which is attained by using a large percentage of long-fibre, Canadian asbestos. A piece of ordinary blotting paper, one-half by four inches in size, showing a tensile strength of about 2 pounds, given one coat of the material, shows a tensile strength of 35 to 40 pounds.

While it is not claimed the coating is tire-proof, demonstrations have been made, with the same blotting paper sample, held in the flame of a match; which indicated that it is fire resistant, and, further, that the heat of the match flame (several hundred degrees Fahrenheit) does not create tackiness or stickiness.

One of the leading testing laboratories of the country reports, on a run-0ffactory sample, as follows:

tiCondition of material in container: Smooth, homogeneous mixture, no livermg.

"Consistency: Brushed coat produces a film of appreciable thickness, with easy application.

itBehaVior of coating at 140 degrees Fahrenheit for 5 hours: On smooth surfaced asphalt prepared roofing, no blistering, sagging nor appreciable absorption. On metal panel, no blistering nor sagging.

UBehavior of coating at 32 degrees Fahrenheit for 1 hour: On metal test panel when quickly bent over a one-inch mandrel, no cracking, nor separation of metal and coating.

"The above tests indicate that this material meets the requirements of Federal Specification SS-R-451 for brushing consistency asphalt for roof coating.

ttln addition, we made the test shown below:

ttBehaVior of coating on tin panel when heated to 700 degrees Fahrenheit and immediately plunged into ice water: No harmful effects could be observed. immediately upon withdrawal from ice water, film withstood bending and straightening without cracking.

HConclusion: In our opinion, this material is a high grade product for use as a brushing consistency roof coating},


The next element to be considered is cost.

However prettin the roofing people may talk about the technicalities, the real consideration is the dollars and cents the owner is called to lay on the barrelhead.

As a yardstick, let us consider the cost of what is commonly referred to as a five-course roofethat is, two layers of roofing paper, felt, or composition, with three layers of one of the various mastics.

The prevailing price for a built-up roof of that character, in the New York territory, which is fairly comparable to other similar communities, is a minimum


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1948-49 Theatre Catalog, 7th Edition, Page 159