The book offered to the attention of readers is devoted to the production and use of thermal insulating foam concrete on portland cement in construction. The book was written on the basis of the results of StroyTsNIL's research work in the field of foam concrete (detailed coverage of these works is given in another book of the author - "Foam Concrete," ed. StroyTsNIL, 1938) and extensive experience in introducing foam concrete at construction sites of the People's Commissariat of Industry, conducted by StroyTsNIL over the past 6-7 years. In addition, when writing the book, the practice of the work of other scientific and production organizations of the Union was fully used.