Crawl Space Drying >> What Is The Treatment For Mold In The Crawlspace

Many homeowners searching the internet for crawlspace repair information end up in home repair forums. While there is some good information out there, there are many examples of bad and What Is The Treatment For Mold In The Crawlspace outdated advice related to repairing crawlspaces. 

I have witnessed firsthand the results of unprofessional crawlspace repair and would like to set the What Is The Treatment For Mold In The Crawlspace record straight on what I consider to be the worst 5 crawlspace repairs I've seen. 1. Adding more foundation vents to the crawlspace.

Old building codes and bad advice have resulted in homeowners adding more vents to their crawlspace in order to dry the high moisture content in their crawlspaces. The thinking behind What Is The Treatment For Mold In The Crawlspace ventilation was that air circulation would force the  moisture in the crawl space air to end up outside. 

Through What Is The Treatment For Mold In The Crawlspace testing, it has been proven that warm, humid outdoor air brought into the crawl space through foundation vents in the summer can lead to increased moisture levels in the crawlspace. Also, the air movement in a home does not move side to side through the vents, but instead upwards (Stack Effect). 

This Stack Effect draws air inward from every crawl space vent and What Is The Treatment For Mold In The Crawlspace up into the living space of the home. A properly encapsulated crawlspace is the only solution to reduce high moisture levels in a crawlspace. 2.Spray Foam a wet or damp crawlspace foundation wall- In a dry below-grade crawlspace this method is the most energy efficient. 

The problem is that in most below-grade crawlspaces, the foundation or What Is The Treatment For Mold In The Crawlspace ground floor of the crawlspace are NOT dry. In fact, a majority of the crawlspaces I run across with spray foam have some form of dry rot in the structural components because the foam has trapped the moisture in the wood. 

It is not uncommon to see What Is The Treatment For Mold In The Crawlspace the spray foam become separated from the wall from the moisture intrusion. Unless the crawlspace has external footing drains, a foundation waterproofing membrane, a foundation sealant, positive grade, and downspout extensions, I cannot ever recommend this method of insulation. 

Staple a vapor barrier to the floor joists- I have not seen a single crawlspace repair mistake more responsible for wood rot and mold than when plastic is attached to the floor joist system. The thinking behind this What Is The Treatment For Mold In The Crawlspace is to stop moisture intrusion of the crawlspace air from entering the wood components. 

There are many problems with this; but the most important to know is that most crawlspaces are vented and the cooler surfaces such as duct work, pipes, and What Is The Treatment For Mold In The Crawlspace the floor will condensate in the summer. The plastic will trap the condensation up against the floor structure causing mold and wood rot to occur. 

Insulating a damp crawlspace with fiberglass insulation- This is another example of outdated advice resulting in mold growth. Paper faced insulation is "mold candy". Please read Do not insulate your floors with fiberglass insulation for the complete What Is The Treatment For Mold In The Crawlspace scoop. 5.Improper drainage system installations- Many crawlspaces have water standing on the ground floor after heavy rains. 

There are many reasons why water enters, and several solutions to prevent or remove the standing water. The worst solution is to ignore this recurring problem, or What Is The Treatment For Mold In The Crawlspace repair the problem with a stand alone pit and pump (especially a pump in a five gallon bucket). A sump pump alone cannot pump all the water that pools around the perimeter or in the middle of the crawlspace. 

A perimeter drain is necessary to intercept the water and facilitate it to the pump. 6. Venting the Dryer into the Crawlspace- this is only considered a repair mistake because What Is The Treatment For Mold In The Crawlspace homeowners quit trying to replace the dryer duct in the crawlspace after it breaks or clogs. 

This will pump gallons of water into the crawlspace air causing it to move upward into the wood components because warm air rises. 7. Insulating Heat Ducts in a Crawlspace with Fiberglass- Ducts in a vented crawlspace will condensate and What Is The Treatment For Mold In The Crawlspace the fiberglass will soak up all of this excess water causing mold to grow around the duct in the fiberglass. 

Additional Problems: Improper Gutter and Downspout Maintenance- Gutters are designed to take roof water away from your home and foundation. Allowing clogged gutters to over pour water will result in more water entering the crawlspace. The biggest mistake of all is allowing the downspouts to drain the water right up against What Is The Treatment For Mold In The Crawlspace the foundation. 

The downspouts should be extended at least 10' to 15' away from the home to prevent roof water from entering the crawlspace. Crawl spaces and basements can become moisture laden, supporting the growth of mold and What Is The Treatment For Mold In The Crawlspace the decay of building materials and providing ideal conditions for insect pests and even rodents. 

Moisture and contaminants can be driven into living spaces by the differences in air pressure between the crawl space/basement and the living spaces above. This What Is The Treatment For Mold In The Crawlspace exchange can be much greater when forced-air heating and air-conditioning equipment is located in basements and crawl spaces.

The strong system airflows can pick up pollutants through any leak in the equipment, plenums or ductwork and quickly disperse them throughout the home. Building codes traditionally have required What Is The Treatment For Mold In The Crawlspace the passive venting of crawl spaces to the outdoors, with the vent sizing dependent on the floor area of the crawl space.

Whether a vapor retarder such as polyethylene was present to reduce moisture entering the crawl space from the soil. However, What Is The Treatment For Mold In The Crawlspace research has shown that ventilating air entering the crawlspace from outdoors during warm, humid seasons wets rather than dries crawl spaces even if effective drainage.

Dampproofing systems are installed to keep liquid water out and a vapor retarder is in place on the earth floor. However, conditioned crawl spaces have been shown to provide better moisture control, and What Is The Treatment For Mold In The Crawlspace they are more energy efficient. The International Residential Code (2009) provides for un-vented crawl spaces (R408.3). 

Conditioned crawl spaces have several essential elements: Perimeter walls (including an access door opening to the outside, if provided) that are sealed to prevent infiltration of outside air (no passive vents). Insulated walls to reduce the transfer of heat either into or What Is The Treatment For Mold In The Crawlspace out of the space. 

Floor covered with vapor-retardant membrane (with or without a concrete slab covering the vapor retarder) to control soil moisture (see Specification 1.2). Either mechanical exhaust ventilation or conditioned-air supply. Floor drains leading to daylight outdoors or What Is The Treatment For Mold In The Crawlspace to a sump pit.

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