Moisture Intrusion Control

Almost all buildings will experience some type of water intrusion or moisture intrusion in the form of leaks, flooding, or condensation issues. Excessive dampness is not only a problem by itself, but also a contributor to several potentially problematic exposures such as fungal growth, bacteria, etc.

Some degree of moisture is necessary in an indoor environment. The appropriate amount of relative humidity (RH) to have in a building is 30-50%. Under 30% RH can lead to increased health symptoms. Over 50% RH can encourage microbiological growth which can lead to adverse health symptoms. At 60% RH, fungal growth is likely to occur. When excessive moisture is present, the structural integrity of the building may also be compromised.

Identify & Eliminate Water/Moisture Intrusion

How a home, commercial or industrial building is constructed and how many holes are put into the surfaces that are exposed to the exterior can create moisture paths within the building. Some of these paths can be very difficult to locate. An indoor water intrusion or moisture intrusion problem will usually have four faucets:

  • The source…Where did the water or moisture come from? 
  • The path…How did the water or moisture get to the area where the damage is occurring? 
  • The form…Vapor, mist, condensation, free water? 
  • The force…Gravity, wind driven, pressured?

There are many paths this moisture can take to enter the building, such as leaking through openings in walls, floors, condensation or moisture vapor convected through wall openings. All leaks bringing free water into the structure must be blocked and corrected.

In most circumstances, the location of the problem, the source of the moisture and the path of the moisture are all close together and easily identified. Other water intrusion or moisture intrusion problems are less obvious. When the moisture source and path are not apparent, a significant investigation may be required.

In the coastal regions of the southeast, HVAC systems pose as one of the largest moisture intrusion and water intrusion problems in many homes and businesses. The hot humid air during the summer months in this part of the country cause tremendous amounts of condensation when introduced to the cool, dry air of an air conditioning system. All precautionary measures must be made to insure that the hot humid air is not allowed to clash with the cool dry air! All duct and supply lines that carry the conditioned air must be well insulated as well as all connections. Whenever new air conditioning units are installed, they must be properly sized and positioned so the condensation formed is properly drained away.

Regardless of the types of water intrusion or moisture intrusion issues that may arise in your home or business, Pro Environmental Services has the qualified technicians to locate the intrusion areas, correct them and make all necessary repairs to return your property to the pre-existing condition.