Publisher's Synopsis
Excerpt from The Waterproofing of Structures: With Special Reference to Sublevel Construction, the Envelope Method and the Application of "Tunaloid"
It is but natural that because of the ease of application coat ings should be tried upon the inner rather than the outer surfaces of structures below ground level. But this always leaves water free to exert its pressure to push off the coating rather than bind it faster to the surface as would be the case if it was applied upon the outside. It is this fact that has rendered so many forms of inside coating absolutely useless.
The only possibility of opposing a reasonably effective stop to the water by an inside application lies in making it of ample thickness and bonding it effectually to the existing concrete. Waterproofing cement in various forms has been tried under these conditions. In one of the most successful forms it com bines with the good qualities of a first class Portland Cement the power of repelling water. It is usually applied in a coating about of an inch thick but requires a special sand for its mixing and especially skilled labor in its manipulation.
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