Have you ever had to have a leaking shower pan for a tiled shower stall replaced, only to have a recurrence a few years later? If so, it is likely that it was not properly built and/or repaired. In most installations, the shower stall is constructed with an underlying one-piece flexible membrane of PVC that is attached to the wall studs before the backer board and wall tile is installed. No nails or screws should penetrate the membrane below the level of the curb of the shower stall. The only opening in the membrane below the curb must be the hole for the shower drain to connect to the house plumbing. The shower drain is designed to allow water on top of the membrane to flow into the drain via weep holes for that purpose. Read More
Graphitic corrosion is a process that may happen in equipment made of iron, particularly grey cast iron, but also ductile cast iron. Graphitic corrosion can lead to unexpected catastrophic failure of the affected part because the cast iron can lose its strength without a visible warning such as a change in size, shape, or appearance. Read More
The wet, relatively warm weather recently experienced in the southeast has caused a high incidence of mold and other fungal growth complaints in homes and other structures. Engineers at Warren Group are often called upon to investigate the cause(s) of these problems. Read More
As a result of the recent weather, those of us in South Carolina have gained a renewed appreciation of the damage that can result from flooding. Even a few inches of flood water can result in property damage and a loss of services in addition to the immediate risk of physical harm. Read More
Have you ever wondered about the cause of a ruptured pipe inside a structure in the dead of winter, and been puzzled because the pipe burst occurred in a heated area? It may seem counter-intuitive, but the cause may have been due to frozen piping. Read More
A large oceanfront house was custom built after two years of planning and construction. The house had three stories over an elevated foundation. Shortly after the house was completed, the owners arrived one evening and found water pouring from above when they parked in the garage beneath the living spaces. Read More
What you see is not always what you get. This commonality exists in the numerous cases I have investigated for water intrusion and moisture issues in buildings. The source that appears most obvious and straightforward may not, in fact, be the root of the problem at all. Read More
Recently, we have seen a number of water damage losses stemming from gas-fired and electric tankless water heaters exposed to freezing temperatures. Tankless hot water heaters have been growing in popularity and use due to their energy savings over traditional water heaters. These units are typically installed on the exterior of a home or business in areas of the country where prolonged freezing or extremely low temperatures are not common. Read More
During the next several months when temperatures start to fall below the freezing point and winter storms packing cold temperatures, heavy snowfall and ice build-ups bear down on various regions of the country, they can and do bring an assortment of unfavorable conditions that could and will affect your insured’s buildings, businesses, and personnel. Some of these regions have already experienced record-breaking snowfalls and bitter cold temperatures, which in turn have increased the danger of roof or partial roof collapses. Roofs that are properly designed and constructed to applicable codes and standards should be built to withstand loading from snow, drifting snow, water-laden snow and ice build-ups. But are they? Building codes and standards that depict the proper roof loads will vary across the U.S. They will generally be based on local historical data, including the expected frequency and intensity of these winter storms in a particular region as shown and discussed in ASCE 7-10. Read More
A newly constructed house was flooded when a plumbing pipe ruptured in the attic during unusually cold weather well below the freezing point. This was a very large house and had been constructed with the most visually appealing and expensive finish materials in the construction industry. Read More
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