The upgraded D6528 Mixer/Pump from Blastcrete Equipment Company gives gypsum... More
These positive indications come at an important time for our industry. Fly ash use in concrete was at its lowest level in 2013, for many decades. Coal power plant operators, uncertain of the EPA’s final ruling, weren’t interested in investing in fly ash beneficiating operations. And some specifiers expressed concern about the potential liability on using fly ash as an ingredient in projects. More
The Chairman of Boral Limited, Dr Bob Every, today announced the appointment of Mr Mike Kane as Chief Executive Officer and Managing Director of Boral Limited, effective 1 October 2012. More
Q What causes the dark vertical lines that occur on gypsum wallboard installed directly over the furring strips in brick veneer/concrete masonry walls? More
Shortly after completing the walls on a new two-story office building, we noticed that the insulation in the cavity walls was not taped or adhered to the backup, as required by the project specifications. The walls are 4-inch face brick with an 8-inch concrete masonry backup. The wall system is 22-inches thick with 2 inches of rigid polystyrene insulation. There are several areas where the insulation is not tight against the backup, but instead, is occasionally in contact with the back of the veneer wythe.We are concerned that the lack of tape on the insulation joints and the fact that the insulation boards were not adhered to the backup may contribute to water leakage problems after the building is completed. Will this condition likely cause future problems? Should the walls be rebuilt before further money is spent on adding interior finishes? More
An older masonry building near Chicago developed mold and mildew problems when gypsum wallboard and furring strips were placed on the interior. The interior surface of the gypsum wallboard drywall was covered with vinyl wall covering. More