Mobile Home Plumbing: How Does It Work?

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Mobile Home Plumbing: How Does It Work?

If you own a mobile home, it is essential to understand how plumbing functions inside. Mobile home plumbing differs from that of site-built homes, so knowing what things to look out for can keep you from unnecessary plumbing issues.

Do Mobile Homes Have Plumbing?

Yes, mobile homes are equipped with much of the same plumbing as regular houses. This includes sinks, showers, toilets, drains, and even washing machines.

That being said, different mobile homes have different plumbing systems. For example, some tiny homes and RVs are equipped with internal plumbing and water supply. These mobile homes must have water tanks to supply water to the home.

How Does Plumbing Work in a Mobile Home?

Mobile home plumbing is distinct from that found in traditional homes, as most of the piping runs underground and into a crawl space.

Contrary to stick-built homes, the plumbing in manufactured homes has not seen much advancement over time.

Nonetheless, they are allowed to experiment with new plumbing options which might not be approved for site-built homes.

Due to this, mobile homes typically feature a mixture of plastic pipes and copper in their plumbing. This can lead to issues when it comes to leaks and corrosion.

Mobile home pipes can freeze during wintertime, leading to costly damage.

To protect them, insulate your pipes and turn off water supply lines when temperatures drop. This will prevent pipes from freezing and ruining your fixtures.

If you’re in the home, consider dripping a faucet overnight to keep pipes from freezing.

If you live in a mobile home, it’s wise to hire an expert for plumbing inspection and repair. They will be able to identify the source of your issue and resolve it permanently so that it won’t happen again.

Mobile Home Plumbing

Differences Between Mobile Home and Site-Built Home Plumbing

If you’re considering buying a mobile home or constructing a tiny house on your property, it is essential to be aware of the distinctions between mobile home plumbing and site-built home plumbing. The materials used and piping systems differ for these two types of houses.

For example, drain lines require ventilation to help wastewater exit the system quickly and efficiently. Without this, water will remain inside the pipes and become trapped inside.

Supply lines need air as well to help the system run efficiently. Without ventilation, water may not enter fixtures properly and clogged lines may prevent waste drainage.

When making repairs or structural changes to a mobile home, it’s important to take into account the different location of water lines compared to site-built homes.

Instead of coming out from the wall, they’re usually buried beneath the floor – an important distinction that should be taken into account when making any repairs or changes.

Common Plumbing Issues in Mobile Homes

Mobile home plumbing is no small feat. To successfully repair, replace and upgrade your system, you’ll need special knowledge and skills.

Pipe locations in mobile homes differ from those found in stick-built houses. Instead of water lines coming out the wall, many mobile homes feature pipes running underneath the floor.

This setup may cause low water pressure and a thumping sound when the faucet or shower is turned on. If this problem persists, it could be indicative of loose piping connections or inadequate ventilation.

Mobile home pipelines, unlike those found in stick-built homes, are not well insulated or protected. This can lead to damage during cold winters in harsh climates.

Galvanized pipes, which are prone to corrosion, are commonly used in waterlines for older mobile home communities. If you notice corrosion on your waterlines, it’s time to replace the pipe.

If you’re considering purchasing a mobile home, be sure to inquire about its plumbing before signing on the dotted line. By taking time to understand these differences, you can help avoid costly repairs in the future.

Where to Buy Plumbing Parts for Mobile Homes

When it comes to mobile home repair or upgrading, there are plenty of parts and accessories you may need. Doing so can increase the value of your residence while making it look fantastic.

First and foremost, inspect the plumbing in your mobile home. Depending on its age, you may come across various types of piping.

Under your mobile home you may notice polybutylene piping. This was once a popular material used in mobile homes but is no longer prevalent.

Nowadays, most manufactured/mobile home piping is composed of either CPVC or PEX (cross-linked polyethylene). Compared to older polybutylene pipes, these modern options are much stronger and can withstand high pressures from water entering your home.

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Casey Loeber

Casey Loeber is the founder of His mission is to share the best information online about plumbing jobs and help plumbers lead fulfilling careers.

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