A1 Foundation Crack Repair Blog

It has been very hot around here with no rain in sight really, so wet basements probably have not been on your mind. But with this humidity you could still have trouble in your basement.

Hot and humid weather just increases the humidity and moisture in your basement. High humidity can lead to mold and mildew growth. Depending on the severity, conditions can lead to rot, structural damage, premature paint problems, and health problems.

High indoor humidity caused by normal activities of everyday living, such as showering, cooking, and drying clothes, can also be a source of your problem. A damp basement is commonly caused by moisture migrating through a concrete foundation. There may not be a sign of any leak or standing water, but the moisture evaporates, increasing indoor humidity. Another common cause is condensation on the cold concrete walls and floors during humid months.

There are only two possible ways to eliminate condensation: heat the air or pull the moisture out of it. Obviously heating your basement to match the outside temperature is counterproductive, so the only real option is to dehumidify.

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It is summer and the basement is moist. You may not see any water, but if you can smell it and feel it, it is there. You may have a basement water proofing system in place, or perhaps you don’t have water seeping in your foundation from pipes or floor cracks. That’s the good news. The bad is that, this doesn’t necessarily mean that your basement is dry.

Often water enters a basement through capillary action, which wicks moisture through walls and floors. The floor and walls may not leak, but it feels damp to the touch because it wicks the water in to the surface. Water vapor also slowly seeps in through the concrete and raises the humidity. Basements act as chimneys pulling the outside air in the house and letting it out on the upper floors.

Humidity increases and condensation results as the hot outside air meets the cool basement.  Even without condensation basements tend to have high humidity levels and mold grows rapidly, generating that musty basement odor. Dust mites love that high humidity too.

There are only two possible ways to eliminate condensation: heat the air or pull the moisture out of it. Obviously heating your basement to match the outside temperature is counterproductive, so the only real option is to dehumidify.

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The purpose of a dehumidifier is to lower the humidity of the air in your home.  Humidity is a measure of the moisture suspended in the air at any given time.  Moisture levels are higher during different seasons.  In Massachusetts, humidity levels are much higher in the summer than in the winter. 

Home dehumidifiers are mostly used to dry air in the basement or crawlspace.  These areas are prone to high humidity levels because they are below ground.  It is not uncommon for the saturated ground outside of foundation walls to cause seeping or leakage through the walls.

The condensation is what allows a home dehumidifier to work. The dehumidifier typically consists of a metal or plastic cabinet that contains a fan, a compressor, metal coils and a collection pan.  There is also a humidistat that allows you to set the level of humidity you desire within a room.

The fan draws air into the unit, and it passes over the coils.  The coils are often set up as a two-stage process.  In the first stage, the coils are very cold.  As the air passes over the cold coils it condenses and collects there.  From here the water drips into the collection pan.  As the air continues on through the unit, it hits the second stage of coils which uses the heat generated by the compressor to re-heat the air and deliver it back in to the room.  

In the meantime, the collection pan fills with water.  The shut off is triggered when the water reaches a certain level.  Sometimes, rather than a collection pan, home dehumidifiers have a fitting that can attach to a hose so that the water can run out of the unit to a drain of your choice.

Understanding the basics of how a home dehumidifier works is important so that you can determine which type of unit to buy for your home.  A high quality, low maintenance unit is the best choice for most homes.  Compare home dehumidifiers carefully before investing in them, this is an important piece of equipment.

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If you find that there is mold growing in your home from a wet or damp basement, you need to act fast in order to remove it. However, if you have a mold problem that covers more than a 10-foot by 10-foot area, consider calling a professional.

When dealing with mold removal, be careful, once mold is disturbed it will release mold spores that can cause additional growth, or those spores can lead to health problems.

The first phase of work will be to completely remove drywall and carpet and all other “non permanent” affected items.  Also remove any furnishings that are carrying mold.  It is rare that these items can be saved once they have mold.

Once that is completed, it is time to clean the mold.  Use a cleaning product that is designed specifically for mold removal.  This will ensure that the spores have been killed, and the entire mold organism has been removed.  You must be very thorough, especially in wall and ceiling cavities. 

Remember that mold spores are often invisible.  So, even though the visible mold has been removed from surfaces, the spores could remain in the air for quite some time. It is very important to isolate the area where you have mold from the rest of the house because mold spores are designed to travel in the air until they can find a place to settle which is good for growth.  Mold spores need warmth, moisture, and a food source.  The food source can include wood, drywall, paper, fabrics and other typical household items. 

The next step is to eliminate the moisture and the food source.  The mold cleaning detergent needs to eliminate the food source from the washed surfaces but you also need to lower the humidity levels in the area.  The temperature in the space should be higher than normal because this will promote faster drying.  Be sure to close any windows or doors to the outside as well, so that humidity from the outdoors cannot come in.

The basement or other affected area should have good airflow for several days, so use fans; but most importantly, be sure to have a dehumidifier in this space.  It should be a reliable, powerful unit that will remove moisture from the air into either into a reservoir or a hose running to a drain or sump pump.  With a moisture meter you can regularly check surfaces and materials for moisture content.  Once you are able to get walls and floors to 12% moisture content or less, mold growth can no longer be sustained.

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Sometimes, no matter what, when you live in a flood zone,  your house will flood in heavy rain. I have a friend who lives on a street called Water Row Lane, and last year their neighborhood had to collectively rent the Boston Duck Boats for 2 weeks to transport them from their homes to their cars in a nearby parking lot.

Water, might be good for flowers, plants, and trees, but it’s not so good for houses.

Live in a flood zone?

If you live in an area that has a high flood risk, elevate the furnace, water heater, electric panel, washer and dryer in your home at least 12 inches above the projected flood elevation.

You should have check valves installed in your home to prevent flood water from backing up your drains.

Have a sump pump installed,  and if you have a sump pump, make sure it’s working and install a battery-operated backup, in case the power goes out.

Clean debris from your gutters and downspouts.

After a flood

Check outside for loose power lines, gas leaks, foundation cracks or other damage. Make sure your porch roofs and overhangs still have their supports. Check your home’s and your out building’s foundations for settling, cracking or undermining. If you see damage, get a building inspector or contractor to check the home before you go inside.

Turn off all electrical switches, even if the power is out.

While the electricity is off, hose down the house to remove any health hazards left by floodwater and mud.

If your furnace or water heater floods, have a technician check them before turning them on.

If your basement is flooded, pump the water out in stages.

Dry out appliances such as washers and dryers before using them. They might need several days to dry.
 
Mold

Mold can produce allergens, and, in some cases, potentially toxic substances that can make you sick, so you need to ensure your home is as mold-free as possible.

Water damage should be taken care of within 48 hours after the incident or mold growth (or worse, bacteria and viruses) will occur.

The best way to prevent mold is to remove wet contents from your home immediately.

Wet items should be cleaned with a pine-oil cleanser and bleach, completely dried, and monitored for several days for any fungal growth and odors.

Dry out damaged rooms by opening windows and using high-pressure fans. If your carpets are damaged, you should strongly consider installing new ones.

Keep the indoor humidity low, ideally from 30 percent to 50 percent. Make sure places of high humidity, such as bathrooms, are well-ventilated. Use a dehumidifier whenever necessary.

Even if you remove the mold, if the water problem (i.e. a leaky pipe or cracked foundation) is not fixed, the mold will come back.
 
Hiring a Contractor

Do the research. Ask friends and neighbors and read reviews. Make sure the contractor can do the type of work needed, foundation and basement crack repair . And check the contractor’s current references.

Check withe the Better Business Bureau, A1 Foundation Crack Repair has an A+ Rating.

Contractors can’t collect more than one-third of payment up-front unless the job requires materials that must be specially ordered. They also cannot demand any payment before the contract is signed.

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