Coal Tar Pitch Roofing Handbook - 1896 - Page 35
THE following photographs showing the operation of waterproofing the walls and floor of one of the new power houses now in course of construction in New York for the N Y. C. & H. R. R. R. are given to illustrate the proper application of Tarred Felt and Coal Tar Pitch for that purpose.
In Nos. I and 2 are shown how the alternating layers of Tarred Felt and Pitch are applied,
while in No. 3 a view of the floor surface shows the six plies or layers of Tarred Felt cemented together with Pitch, over which a final coat of Pitch is to be applied. The Concrete walls shown in all the photographs were built to receive the Waterproofing.
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