Clearly, it’s important that you seal your crawl space. That’s not really negotiable. The next question is how to seal a crawl space vent.
The most recent zoning and coding requirements actually provide a lot of insight into this problem. You can learn exactly how to seal foundation vents the right way.
Complete Top to Bottom Sealing
First, it’s important that you seal the entirety of the crawl space. Moisture is tricky and finds its way through just about anything. If you miss any of it, it’ll end up seeping into the rest of your home.
Crawl space encapsulation only works when it’s genuinely encapsulated. You need to make sure you’ve sealed the foundation vents, covered the dirt floor, and fixed any cracks or leaks in the foundation.
Remember, it’s much better to get the job done right the first time. That’s especially true with sealing a crawl space because you’re unlikely to realize you’ve done the job incorrectly until months down the line.
Extra-Heavy Reinforced Lining
It’s common for inexperienced individuals to try and use a very thin tarp when lining a dirt crawl floor. This thin lining covers the ground, but it doesn’t do much else.
It’s extremely important that the lining you use doesn’t have any chance to break, tear, or otherwise collapse. An extra-heavy liner makes sure it doesn’t accidentally break, but it also keeps insects and critters from managing to create a break in it.
This reinforced lining may include many layers of different materials to stop moisture leaking through. It’s also often treated with an anti-microbial finish to make absolutely sure it’s hostile to mold and mildew that may otherwise grow.
Dehumidification and Air Filtration
Last, but certainly not least, you may need to install a dehumidifier or air filtrating unit in your crawl space. Although this can be difficult to install, it’s important if you’re having particularly difficult problems.
Remember, even once you’ve sealed the crawl space, the air in your crawl space will still rise into the rest of your home. You’re always better off playing it safe.
If you do need this kind of heavy-duty protection, a JES expert can let you know. This isn’t necessary for every home, but your home may require special treatment.