Have a Home With a Crawl Space? You Need a Vapor Barrier
Installing a vapor barrier, or replacing an old barrier, is an essential home improvement project that will keep your home safe from the scourge of water damage.
The Benefits of Crawl Space Vapor Barrier Installation
Control Crawl Space Moisture
A crawl space with excessive moisture puts your home at risk for termite infestation, mildew, and mold growth. A vapor barrier reduces the humidity to safe levels, without the need for an expensive crawl space dehumidifier or active ventilation systems.
More Reliable Than Crawl Space Encapsulation
Encapsulation is in vogue right now, creating a completely sealed crawl space to ‘solve’ the problem of humidity. Unfortunately, encapsulation systems are disasters waiting to happen; a failed dehumidifier requires a costly replacement at best, and at worst results in rapid, uncontrolled mold growth. Vapor barriers last much longer and since they have no moving parts are more energy efficient and less prone to failure.
Makes Future Repairs Easier
Our bright white vapor barriers not only prevent water vapor from building up in your crawl space, but also make working in your crawl space easier. Leaks from above will be easy to spot and anyone who dabbles in DIY repairs will appreciate the cleaner, brighter working conditions.
Vapor Barrier FAQs
I was told that I need my crawl space fully encapsulated, is a vapor barrier right for me?
There are several companies that are only selling encapsulation solutions. This means that if a homeowner contacts them asking for a moisture barrier, they will tell them that they need encapsulation, even if a moisture barrier would have been sufficient. Encapsulation usually costs more than three times as much as a vapor barrier, and needs more frequent, and costly, maintenance.
We used to perform encapsulation services but over the years have determined that encapsulation is rarely the best solution and often causes more harm than good. Perhaps 1 out of 50 houses we inspect truly requires encapsulation, and in that case we’ll advise you on how to proceed as this is not a service we provide.
If you’ve been given a quote for encapsulation let us know and we can provide you with a free onsite evaluation and see if a vapor barrier would be right for you.
Do vapor barriers help indoor air quality?
Yes, a vapor barrier can help improve the air quality inside your home. Your HVAC system creates suction in your home, drawing some air from your crawl space. These air leaks can result in moisture or even mold spores being pulled into your home. A crawl space vapor barrier will improve the air quality of your crawl space and consequently the air inside your home.
Do vapor barriers help against radon?
Yes, vapor barriers are an essential part of any radon mitigation strategy. However, a vapor barrier alone is generally not sufficient, and is used in conjunction with active ventilation.
Is subfloor insulation a substitute for a crawl space vapor barrier?
No, while crawl space insulation is great for reducing your energy bills and keeping your home comfortable, it is not a substitute for a vapor barrier.
Part of the problem is that fiberglass batts and rigid foam insulation suspended between your floor joists are not airtight, meaning that air can still travel from your crawl space into your home.
Even if your floor was air tight, excessive moisture underneath your home will result in mold growth and make for a hospitable home for termites!
Does my crawl space need a vapor barrier or encapsulation?
Nearly all homes with a crawl space will benefit from a vapor barrier.
In general, encapsulation is only appropriate for crawl spaces with zero airflow or standing water. If your crawl space vents are blocked and outside air can’t make it in, or you have pools of water under your home, then you may need a more elaborate waterproofing solution such as a french drain, sump pump, or gutter system.
If you’re unsure if you need a vapor barrier, we can provide you with a free onsite evaluation and see if a vapor barrier would be right for you.
What People Say About Working With the Dragon
“Emit and his team are awesome! They respond quickly and call anytime there are updates etc. Their team does and great job and very straightforward and honest. We are very pleased with the work and professionalism. Thank you!”
– Crystal R.
“We used Dragon Vapor to place a vapor barrier in our crawl space. They were friendly, timely and professional. Definitely recommend them to anyone needing this type of service.”
– Beth H.
“Awesome company. They showed up on time and did excellent work for a reasonable price. Even came back later to bring me an insulation batt for the attic access door. Can’t recommend them enough.”
– Joseph M.
Our Service Areas
Ready to start saving money on your utility bills? Schedule a time to get a free onsite evaluation and quote.