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How humidity can damage your flooring

Published On: Oct 25 2013 11:04:27 AM CDT
Updated On: Nov 07 2013 11:35:13 AM CST

By Steve Graham, Networx

Humidity doesn’t just make you uncomfortable. It also causes problems and health hazards at every level of the home. Here is a bottom-to-top summary of some of the dangers of high humidity, and some solutions for each problem.

Underground problems

Humid weather simply exacerbates moisture problems that are often a concern in crawl spaces and basements. Moisture from the ground works with moisture from the humid air to generate condensation on walls and other surfaces, and create muggy basement smells and atmospheres. In turn, this can translate to mold and mildew issues. To avoid these problems, it is important to take steps to minimize moisture below the main floor of the home.

If humidity is an issue in any season, foundation vents should be left open all year to help the foundation dry out as much as possible. On the other hand, close basement windows and doors to keep out humid summer weather.

If humidity is an issue for a basement, insulate basement walls and run a dehumidifier. Rigid foam insulation is one good option, as it is essentially waterproof. However, it must be covered with drywall or another fire barrier. Attach a humidistat to the dehumidifier to control the humidity levels.

Crawl spaces should be covered with polyethylene or other thick, solid vapor barrier to keep moisture from the ground from creating bigger problems. Crawl spaces with moisture barriers also should have one square foot of vent area for every 1,500 square feet of crawl space area, according to Michigan State University (MSU) researchers. Crawl spaces without moisture barriers should have one square foot of venting per 150 square feet of space.

Mechanical system problems

Humid weather can also leave condensation on water pipes and toilet tanks. Again, this condensation can also lead to mold and mildew problems. If the toilet tank regularly beads with condensation, consider installing waterproof insulation inside the tank. Also wrap insulation around water pipes to minimize condensation.

Flooring problems

Moving up from the basement, the floor is the next likely victim of humidity problems. Mold and mildew can get into wood flooring or carpets, and may be hard to completely remove. It is best to avoid such problems by reducing humidity. Air conditioning systems reduce humidity while reducing the temperature, if they are installed correctly.

Mildewed carpet should be cleaned with an electric shampoo machine. If musty odors develop on carpet, either replace the entire carpet or have it professionally cleaned and dried off-site. Replace musty or damp padding.

If mildew develops on wood flooring, scrub it off with trisodium phosphate or quaternary disinfectants, then rinse and dry thoroughly, and add a mildew-resistant paint.

Storage Problems

Humidity can also wreak havoc on clothes, food and other stored items. Dry foods can draw in moisture and quickly go stale if humidity exceeds 60 percent. Cans may rust and leak in humid weather. Damaged or swollen cans should be tossed out. If humidity is an issue, keep stored food in an air-conditioned space.

Reduce humidity damage to clothing with chemical absorbents or through proper ventilation. Use silica gel packets or other moisture-absorbing materials if you plan to tightly close all closet doors and trunks. The other option is to leave closet doors open and use fans to improve air circulation. Also separate clothes within each closet to allow airflow between items.

Wall problems

Humid air can also build up in walls, which can become soggy over time, and may even attract mold and mildew. Interior and exterior paint can also bubble and peel under extended humid conditions.

To minimize such problems, boost wall insulation and consider vapor-retardant paints. Also caulk or weather strip all gaps and cracks around the walls, baseboards, doors and windows. According to MSU researchers, such sealing work can minimize moisture problems in walls.

Attic problems

Finally, attics can get hot and uncomfortably damp in humid weather. Be sure to properly ventilate the attic. If the attic does not have a vapor barrier (which may not be a necessity in many cases), it should have one square foot of venting per 150 square feet of attic, according to MSU research. For areas with vapor barriers, one foot of venting per 300 square feet of attic is acceptable.

Humid weather can cause a variety of home problems and hazards, but they can all be prevented or remedied with some care and diligence.

Source: http://www.networx.com/article/how-humidity-can-damage-your-home

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