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Maintain A Healthy Mobile Home Living Environment With A Vapor Barrier


Mobile Home Vapor Barrier - Keep The Water Out!

The main function of a vapor barrier is to retard or prevent the migration of water vapor. When water evaporates, it is naturally attracted to warmth. This usually happens because warm water has the ability to hold more water vapor. In this regard, unless you live in a desert climate where the soil is quite dry, water is constantly leaving the soil and evaporating into the air. This does happen to the house as well, water from the soil is bound to saturate the basement floors and concrete foundation. If you have a crawl space, then the water will leave the soil and look for warm air. This water vapor will eventually penetrate your carpeting, insulation and wood flooring. This is not only quite damaging to the surface, but it does also bring along musty, uncomfortable odor as well.

Most builders therefore use high performance vapor barriers or retarders to prevent this phenomena. They are usually made of virgin high density polyethylene. Most of them are usually cross laminated, this basically means that two separate sheets are fused together using a hot melt resin at a ninety degree angle; this is quite similar to how plywood is made. The result of this process is that the barrier has no pin holes and the material is almost fifty times better at resisting water vapor transmission than a polyethylene material that’s not been cross laminated. Further to this, they are very resistant to punctures and tearing. To seal any overlapping joints during installation, one can use some special pressure sensitive tapes. Because they are unaffected by most soils, they can be used virtually anywhere.

Vapor barriers make an excellent cover over dirt in crawl places. They can also be used beneath concrete slabs in garages, basements and foundation walls. Even though the cost of high quality vapor barriers may look steep, the overall savings accruing from installing them in the first place does outweigh the initial outlay costs. Because these are often a onetime installation, it is always advisable to go for the highest quality available so as to ensure that you fully secure your home from damages of unwanted water vapor.

When choosing the most appropriate vapor barrier, it is important to take into consideration some factors such as the size of the space where you want to place the barrier, the most appropriate material to be used in that instance, the durability of the material you want to use, the overall cost of the material and its negative effects on the environment if any. This is because even though polyethylene is the most popular material used for this purpose, it is by no means the only material in the market.

It is advisable though to avoid the installation of water barriers such as those made of polyethylene vapor barriers, radiant (reflective) vapor barrier insulation and the batt (foil faced ) insulation on the interior of air conditioned assemblies as this practice has been linked with moldy buildings. It is also worth mentioning that different areas have different building codes which demand for certain installations, it is therefore advisable for homeowners to acquaint themselves with all laid down rules and regulations before installing or not-installing particular vapor barriers in their homes.

Here are some of the popular mobile home vapor barrier options readily available in the market.

Mobile Home Vapor Barrier - Product Examples

1) Product Name: Viper 10 mill C 14 feet by 210 feet

Product Price: $ 312.38

Product URL:

Product Details: this is an extruded, well layered, high density vapor barrier thats ideal for under slab use. made of high density polyolefin, the unit is very durable and doesnt break down when exposed to the vagaries of nature. The tensile strength and high puncture resistance of the unit does also reduce instances of tear and punctures when and if exposed to harsh rigors of job sites.

2) Product Name: Viper 11 15 Mil Class A

Product Price: $ 392.00

Product URL:

Product Details: made of blown polyolefin, the unit has a thickness of fifteen mil and is easy to install, durable and resistant to punctures and tears. The unit has a relatively low permaeance rating number which is very important if you are keen on preventing instances of vapor migration.

3) Product Name: Viper CS II 10 Mil

Product Price: $ 345.10

Product URL:

Product Details: this vapor barrier is designed specifically for controlling moisture migration in crawl spaces. The unit is manufactured with a very bright white color which gives any crawl space a clean and fresh look. It is engineered with excellent tear and puncture resistance.

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