Civil Engineering Association

BS 6477:1992 Specification for Water repellents for masonry surfaces

This British Standard specifies performance requirements, including requirements for durability, for water repellents intended for use on
masonry above ground level and free from cracks with a surface width exceeding 0.15 mm.
Water repellents are classified into four groups according to suitability for use on particular types of substrate. The various clauses in the specification containing performance requirements refer to
Appendix A to Appendix H inclusive. These appendices contain test procedures, which are also requirements of the standard.
Appendix J gives recommendations for use, covering general considerations, the preparation of surfaces to be treated, the application of the repellent and the protection of workers.
NOTE The titles of the publications referred to in this standard are listed on the inside back cover.

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