Cosmetics cast concrete action demonstrating serious health risks Crawl Space
At first glance, in a hollow concrete pumps can be logically, owners of houses and apartments. After all the units are more concrete in the garage and basement, and it gives a nice finish. But experts say the protection and insulation - look again. The slab of concrete construction cosmetics is pumped into a cavity for the new house is different from a basement poured during construction. It is actually a deterioration of air quality in the internal affairs meant that it was correct. L 'Result can be the onset of the syndrome of "sick" building.
The number one reason homeowners seals a cavity is simple: a moist, fertile ground for mold moldy. If left unchecked, mold will move upwards in a living space at home and a health risk expensive. Nose and paranasal sinuses, coughing, wheezing, sore throat, headache, fatigue and eye irritation are common symptoms.
"Air quality in indoor spaces is something that can not easily accept. There are over 16 million peoplein the United States alone suffer from asthma. About 7 million children, "said Tim Wilkerson, a chamber professional consultants and technicians.
The fact is that the choice of wet, porous concrete to seal a crawl space is like setting a wolf to guard the henhouse. Why? A typical mixture contains more than 300 pounds. Of water per cubic meter of concrete. Owner of a house that accepts hornet's nest, a concrete pumping unknowingly saturated the entire area withMold-friendly moisture.
And I do not think that the best environment after the concrete dries. In a large basement, it is easy for a pig to paddle hard or near the surface of concrete. But crawl spaces are too small and narrow for the technology. Sun only finisher around the mass cast to float with one hand. As a result of the plate is dried with a coating of limestone dust dispersed into the air when they scraped boxes or contractors - or children playing. Unfortunately, the dustbecause it contains silica, which can cause serious lung damage. So much to look "finished."
Installing a vapor barrier - an absolute necessity - before pumping of concrete also creates problems. Since the concrete barrier that prevents water seepage into the ground underneath the house, you can only escape upwards. That's a lot of moisture, if we consider that the concrete slab that a cavity with a 1,000 square feet 4 inches contains 500 liters of water (thebe enclosed within the walls of the house).
Also, since concrete does not provide a thermal break, a difference in temperature between the air and the concrete surface, it can cause condensation. And this leads to a higher form.
Wilkerson knows the other side of the pumping of concrete. For years, he also thought it would be an acceptable solution for the space of clean scan. But when he discovered the problems of moisture, he began experimenting with all that water reducersconcrete with the hope of developing a dry mix. Even if you managed to reduce 350 pounds. pounds per cubic meter requirement 300th constant moisture and mold problems persist.
"I realize that the area of pumping concrete in the crawl is actually a disservice to the homeowner. Aesthetically, you can look, but we must all take a closer look," he says.
The alternative to the pumping of concrete is an encapsulation of the crawlspace liner.The advantages of this solution are numerous:
or permanently seal walls and floors.
or moisture is restored and therefore do not become moldy.
Or stop radon and other natural gas line, but deadly to rise and threaten air quality in indoor spaces.
Or save on energy costs, such as aluminum heat shield reflects the warm air in the house, while the cold air.
or approved federal tax credits for most homeowners.
Wilkerson will continue to betterways to keep the air inside safety. "Or take the easy way out and just pour concrete, or take a more polite. A little 'education can save lives."
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