Specification for urea-formaldehyde (UF) foam systems suitable for thermal insulation of cavity walls with masonry or concrete inner and outer leaves|Precipitation methods, Time, Stability, Dilution, Physical testing, Life (durability), Urea-formaldehyde resins, Foams, Chemical analysis and testing, Quality control, Gelation, pH measurement, Specimen preparation, Water-absorption tests, Viscosity measurement, Dimensional measurement, Type testing, Shrinkage tests, Formaldehyde, Test specimens, Thermal insulating materials, Cavity walls, Determination of content, Visual inspection (testing), Density measurement