Flood-Damaged Homes & Buildings

by Nick Gromicko & Mike Marlow

 

Home and business owners should be prepared to protect themselves and their family members from the unique challenges posed by flood-damaged buildings. 

 

Hazards in and around flood-damaged buildings include the risks of:

• growth of large mold colonies;
• septic system collapse;
• trip-and-fall injuries;
• structural collapse; 
• fire and explosions; 
• toxic sludge and materials containing waterborne bacteria; and 
• electrical shock hazards.

Inspection Tips

• Inspect the building exterior for downed power lines and gas leaks. Gas leaks will smell like rotten eggs. If you suspect a gas leak, contact the utility company immediately.
• While entering the building, see if the door sticks at the top. If it does, this could mean that the ceiling is ready to collapse. After you open the door, stand outside the doorway, clear of any falling debris.        
• Wear sturdy, treaded boots. According to the American Red Cross, the most common injury following a disaster is cut feet. Broken bottles, nails, glass, and other dangerous debris may litter the floor, and stairs may be very slippery.
• Once you are inside the home, check for gas leaks again. If you smell gas or hear a blowing or hissing noise, open a window and quickly leave the building. Turn off the gas at the outside main valve, if you can, and call the gas company from a neighbor's home. If you turn off the gas for any reason, a professional must turn it back on. Never use an open flame inside of a flood-damaged house unless you know that the gas has been turned off and the house is ventilated. To inspect for damage, use a battery-powered lantern or flashlight, and not an open flame or electrical fixture in the house.
• Do not use appliances that may have gotten wet unless you know they have been dismantled, cleaned and dried.
• Do not work by yourself. If you are injured, it might take a long time before you receive assistance. If you must work alone, bring a cell phone or radio so you may call for assistance, if the need arises.
• Bring a HEPA-rated respirator to use in case you detect extensive mold. If you are asthmatic or otherwise at heightened risk to mold exposure, leave the building. Other personal safety equipment, such as gloves and coveralls, may also prevent contact with mold and other contaminants.
• Examine doors, walls, windows, floors and staircases to make sure that the building shows no signs of potential collapse. Inspect for loose plaster, drywall, and ceilings that may fall. Also, inspect the foundation for evidence of cracks and other structural damage that may render the building uninhabitable.
• Inspect for fire hazards, such as broken and leaking gas lines, flooded electrical circuits, and submerged furnaces and electrical appliances. Flammable and explosive materials may travel from upstream. Be aware that fire is the most frequent hazard in homes following floods.
• Inspect for electrical system damage, such as broken and frayed wires, and burned insulation. You can turn off the electricity at the main fuse box or circuit breaker. If you have to step in water to get to the fuse box or circuit breaker, call an electrician first for advice. Electrical equipment should be inspected by a qualified professional and dried before being returned to service.  Salt water and brackish water can cause even more damage very quickly.
• Inspect for sewage and water supply-line damage. If you suspect sewage lines have been damaged, avoid using the toilets and call a plumber. If water pipes are damaged, contact the water utility company and avoid operating the tap.
• Use caution while inspecting crawlspaces for a variety of reasons, such as the presence of mold, sewage, asbestos, chemicals, rodents, and the risk of structural collapse.
• Watch out for animals, especially poisonous snakes, which may have been washed into the building during the flood. You can use a stick to poke through debris to check for dangerous critters.
• Food that has come into contact with floodwater may be contaminated and it must be thrown away.  Canned food may be salvageable if the can is not dented or damaged.
• Sterilize water if it is of questionable purity. One easy way to do this is to boil it for at least five minutes. Water wells that may have been affected by floodwater should be pumped out and the water tested for purity before drinking.
• Have exposed wires replaced by a qualified professional.
• As much as possible, remove the mud and silt that has entered the home, both by shoveling and hosing the house down. Mud and silt contain sewage and chemicals from farms, factories, roads and buildings. Discard items, such as mattresses and wallboard, that may be contaminated by mud or silt.
• Turn off the house’s electricity. Do this even if the power company has turned off electricity to the area.
• Take pictures of the building and its contents for insurance purposes.

We here at Veteran Home Inspections wish everyone in the areas affected by Hurricane Harvey the best.  Take care and be safe.

Mike & Jamie Marlow

Veteran Home Inspections, PLLC

www.vhillc.com

210-202-1974

Protect Your Property From Water Damage

With the predicted rainfalls coming from the hurricane headed towards the Texas coast, now is a good time to take a look around your property to see where your vulnerabilities to water are.  A little maintenance and repair now can keep you dry and keep your home or business safe.

Water may be essential to life, but, as a destructive force, water can diminish the value of your home or building. Homes as well as commercial buildings can suffer water damage that results in increased maintenance costs, a decrease in the value of the property, lowered productivity, and potential liability associated with a decline in indoor air quality. The best way to protect against this potential loss is to ensure that the building components which enclose the structure, known as the building envelope, are water-resistant. Also, you will want to ensure that manufacturing processes, if present, do not allow excess water to accumulate. Finally, make sure that the plumbing and ventilation systems, which can be quite complicated in buildings, operate efficiently and are well-maintained. This article provides some basic steps for identifying and eliminating potentially damaging excess moisture.

Identify and Repair All Leaks and Cracks

The following are common building-related sources of water intrusion:

• windows and doors: Check for leaks around your windows, storefront systems and doors.
• roof: Improper drainage systems and roof sloping reduce roof life and become a primary source of moisture intrusion. Leaks are also common around vents for exhaust or plumbing, rooftop air-conditioning units, or other specialized equipment.
• foundation and exterior walls: Seal any cracks and holes in exterior walls, joints and foundations. These often develop as a naturally occurring byproduct of differential soil settlement.
• plumbing: Check for leaking plumbing fixtures, dripping pipes (including fire sprinkler systems), clogged drains (both interior and exterior), defective water drainage systems and damaged manufacturing equipment.
• ventilation, heating and air conditioning (HVAC) systems: Numerous types, some very sophisticated, are a crucial component to maintaining a healthy, comfortable work environment. They are comprised of a number of components (including chilled water piping and condensation drains) that can directly contribute to excessive moisture in the work environment. In addition, in humid climates, one of the functions of the system is to reduce the ambient air moisture level (relative humidity) throughout the building. An improperly operating HVAC system will not perform this function.

Prevent Water Intrusion Through Good Inspection and Maintenance Programs

Hire a qualified InterNACHI inspector to perform an inspection of the following elements of your building to ensure that they remain in good condition:

• flashings and sealants: Flashing, which is typically a thin metal strip found around doors, windows and roofs, are designed to prevent water intrusion in spaces where two building materials come together. Sealants and caulking are specifically applied to prevent moisture intrusion at building joints. Both must be maintained and in good condition.
• vents: All vents should have appropriate hoods, exhaust to the exterior, and be in good working order.
• Review the use of manufacturing equipment that may include water for processing or cooling. Ensure wastewater drains adequately away, with no spillage. Check for condensation around hot or cold materials or heat-transfer equipment.
• HVAC systems are much more complicated in commercial buildings. Check for leakage in supply and return water lines, pumps, air handlers and other components. Drain lines should be clean and clear of obstructions. Ductwork should be insulated to prevent condensation on exterior surfaces.
• humidity: Except in specialized facilities, the relative humidity in your building should be between 30% and 50%. Condensation on windows, wet stains on walls and ceilings, and musty smells are signs that relative humidity may be high. If you are concerned about the humidity level in your building, consult with a mechanical engineer, contractor or air-conditioning repair company to determine if your HVAC system is properly sized and in good working order. A mechanical engineer should be consulted when renovations to interior spaces take place.
• moist areas: Regularly clean off, then dry all surfaces where moisture frequently collects.
• expansion joints: Expansion joints are materials between bricks, pipes and other building materials that absorb movement. If expansion joints are not in good condition, water intrusion can occur.

Protection From Water Damage

• interior finish materials: Replace drywall, plaster, carpet and stained or water-damaged ceiling tiles. These are not only good evidence of a moisture intrusion problem, but can lead to deterioration of the work environment, if they remain over time.
• exterior walls: Exterior walls are generally comprised of a number of materials combined into a wall assembly. When properly designed and constructed, the assembly is the first line of defense between water and the interior of your building. It is essential that they be maintained properly (including regular refinishing and/or resealing with the correct materials).
• storage areas: Storage areas should be kept clean.  Allow air to circulate to prevent potential moisture accumulation.

Act Quickly if  Water Intrusion Occurs

Label shut-off valves so that the water supply can be easily closed in the event of a plumbing leak. If water intrusion does occur, you can minimize the damage by addressing the problem quickly and thoroughly. Immediately remove standing water and all moist materials, and consult with a building professional. Should your building become damaged by a catastrophic event, such as fire, flood or storm, take appropriate action to prevent further water damage, once it is safe to do so. This may include boarding up damaged windows, covering a damaged roof with plastic sheeting, and/or removing wet materials and supplies. Fast action on your part will help minimize the time and expense for repairs, resulting in a faster recovery.

For water intrusion and mold inspections, call Veteran Home Inspections at 210-202-1974.  You can also book online at www.vhillc.com