What is the relationship between modern home construction materials, techniques, technology and mold? A guest blog from Mike Adams.
I have concluded that mold and 'mold load' in homes is getting worse, not better. Over the past 40 years, we have made some significant changes that have negatively affected our home's indoor air quality. Here are a few reasons for the increase in mold exposure to all of us: 1. Homes can't breathe: In a cold climate during the heating season, moisture vapor inside a building is driven outward into exterior walls. When it reaches a surface that’s below the dew point, the vapor condenses into a liquid. That surface is typically the backside of the exterior sheathing. Rigid foam board, particularly foil-faced, creates a vapor impermeable barrier, so the wall cannot quickly or fully dry out. 2. Changes to the way we build homes: We are using less and less real lumber: We have exchanged real lumber for manufactured particleboard, and pressed wood. Particleboard is a widely used material in the building industry. It is created by placing wood chips, fibers, or even small scraps of wood under intense pressure with adhesives and chemicals. Cost is the overriding factor and the main reason builders choose particleboard over any other building material. It is a fraction of the cost of lumber. When building large projects that require hundreds of sheets of material, or even when you use it for small projects such as flooring in a bathroom, particleboard can save you money. Saving a substantial amount on particleboard seems wise, however, do so with caution. One disadvantage is that particleboard will absorb moisture, causing it to swell. This can be a problem if excessive water is spilled on linoleum, carpet, hardwood, or anywhere that particleboard is used as a floor underlay. When using particleboard for flooring, moisture barriers must be placed inside the foundation to prevent moisture from swelling the particleboard. If a leak or flood occurs and affects particleboard, the dry out time is up to 5 times longer than traditional lumber. Additionally, if mold begins to grow on the particleboard, there is always a concern of the potentially toxic mycotoxins being omitted from the “broken down” adhesives and other chemicals used in the manufacturing process. It becomes something of a mycotoxin cocktail. In addition to this, we have exchanged traditional lath and plaster construction for sheetrock. ie: sheetrock with paper all around it. A much better food source for mold than traditional lath and plaster. An added benefit of the plaster is lime was added. With the ph of lime included in the mix, it became a natural fungicide. Lime plaster was also permeable and allowed for diffusion and evaporation of moisture. 3. Homes are getting more and more complex rooflines: When a portion of one part of a roof, delivers rainwater to another part of a roof, and then to a larger part of a roof, the accumulated water often gets diverted into 'corners' in hopes that a miraculous rain gutter can handle the volume of water. It usually is a recipe for water getting into places that it should not be. In addition to this, when a roofline abuts into a wall, the flashing is not sufficient to keep water from wicking into the wall. Once the wall is saturated, the water will find its way inside the home. I am constantly amazed at absolutely beautiful homes being built, and very little attention is paid to the drainage. This includes problems from the rooflines to the rain gutter, to the ground. Additionally, if there are low spots where the water can flow into the foundation, it is only a matter of time before water intrusion into the basement or the crawl space. 4. We are building bigger homes: Bigger homes, bigger problems. Or at least more problems. I recently treated a home that had 14 sinks, 4 bathtubs/showers, 6 toilets, 2 kitchen sinks, 2 dishwashers, 2 refrigerators with water supplied to them, 2 washing machines, and 4 outdoor hoses connections. This increases the odds of having leaks and floods. Along with this, there were multiple HVAC units in the home. Often times these larger homes are used as vacation homes and are not occupied year-round. The lack of attention, the decreased year-round occupancy, less heating, less cooling, and less ventilation frequently results in mold growth. 5. EMFs and specifically 5G electromagnetic frequencies; Several studies have found that low-level EMF exposures of the type found in many homes induces mold growth. Similar research done at Chernobyl found ionizing radiation encourages mold growth.
The most interesting work to date is related by Dr. Dietrich Klinghardt. In his studies, he determines the following: • the amount of cell phone radiation in a cubic inch of air is now several million times higher than it was just ten years ago. • the production of biotoxins in mold cultures increased by more than six hundred times when exposed to ambient cell phone radiation from a nearby cell phone tower. Whether you agree with some or all of these points, it is very hard to dispute that we have put ourselves in a very unhealthy position relative to our indoor air environments.
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