Know About The Mistakes to Avoid When Repairing Your Crawl Space
March 24, 2021
Many homeowners look for crawlspace repair details on the internet and end up in home repair forums. Although some useful information can be found in forums, there are also examples of bad and obsolete advice when it comes to crawlspace repair. If you wish to learn more about this, visit more info here
1. Adding more vents to the crawlspace – Due to outdated construction codes and poor advice, homeowners have been forced to instal more vents to their crawlspaces in order to dry out the high moisture material. The idea behind ventilation was that the moisture in the crawl space air would be forced outside by air circulation. Hot, humid outside air brought into the crawl space through foundation vents in the summer has been shown to cause increased moisture levels in the crawlspace through research.
In addition, air in a home does not travel from side to side through the pipes, but rather upwards (Stack Effect). This Stack Effect pulls air up from the crawl space vents and into the home’s living space. The best way to minimise high moisture levels in a crawlspace is to get it properly encapsulated.
2. Spray open or closed cell foam insulation on a damp crawlspace foundation wall – Although spraying open or closed cell foam insulation in your home is one of the most effective types of insulation, it is seldom appropriate in a crawlspace. Water and moisture are trapped in the block wall or between the wall and the spray foam insulation. Since the air flow in a building is upwards, this moisture has nowhere to go but up (Stack Effect).
3. Install a vapour barrier between the floor joists – I have yet to see a crawlspace repair error that is more responsible for wood rot and mould than when plastic is installed between the floor joists. This is done to prevent moisture from the crawlspace air from getting into the wood parts. There are many issues with this, but the most significant is that most crawlspaces are vented, which means that in the summer, cooler surfaces such as ductwork, pipes, and the floor can condense. Mold and wood rot will develop as a result of the condensation being trapped against the floor structure.
4. Using fibreglass insulation to insulate a damp crawlspace – This is another example of obsolete advice that leads to mould formation. Insulation with a paper face is known as “mould candy.” Fiberglass insulation should not be used to insulate the floors.
5. Improperly built drainage system – After heavy rainfall, several crawlspaces have water standing on the ground floor. There are a variety of explanations why water enters, as well as a variety of methods for preventing or removing standing water. The worst solution is to neglect the recurrent problem or to fix it with a separate pit and pump (especially a pump in a five gallon bucket). A sump pump alone would not be able to remove any of the water that has accumulated around the perimeter or in the centre of the crawlspace. A perimeter drain is required to collect water and transport it to the pump.