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Screwpiles For Mobile Homes.
Screwpiles are a type of deep foundation that is often used in construction. It consists of a steel shaft with one or more helical plates better known as a flite - similar to a large screw - that is drilled into the ground. The helical plates help to distribute the weight of the structure evenly and prevent the foundation from shifting or settling unevenly. Screwpiles are commonly used for bridges, grade beams, footings, buildings, decks, grain bin anchors and other types of infrastructures.
Screwpiles are a proven cost-effective way to secure a new mobile home to the ground. There is nothing structurally sound about placing a 35-ton building on blocks of wood. Before screwpiles, that's what they did and still doing it unfortunately. Mobile homes placed on wooden blocks continually move up and down in cold climate areas. The frost will lift the blocking and the home, that causes doors and windows to not work properly or not at all in some cases.
What are the benefits of screwpiles? Screwpiles installed properly will never settle or lift out of the ground. Most old and new mobile homes are built on a steel frame, the steel frame is welded to the screwpiles. That's peace of mind!
Banks Love to hear you're putting your new mobile home on screwpiles, screwpiles are considered to be a foundation. Many of my customers say they secured a mortgage much easier because they planned to use screwpiles. Insurance......you will receive lower premiums if using screwpiles under your new home. Insurance companies are afraid your new home will blow away if it's not secured properly.
What are the costs of Screwpiles?
While I can't speak for other screwpile installers I can however share what I charge for screwpiles installed. Most mobile homes already have a blocking plan designed by the engineer. We install a screwpile in the same place that was designed for blocking. In my experience, it can vary from manufacturer to manufacturer but on average I install 18 screwpiles per home. Two rows of 9 screwpiles. Each pile is $405 installed X 18 = $7290. For this price I supply the machine to install, 18 piles and 18 inserts. I also charge travel/setup time to the site and back to my yard. The homeowner provides two people to help with the install. I provide all the tools and materials but not the labor. Most homeowners enjoy being involved with the process and helping with the project.
This is a mobile home site we setup for a customer in a town that provided water and sewer services to the building lot. No septic tank required! The town works department installed the water and sewer and we built the pad and installed the screwpiles around that. The water and sewer were installed where the customer wanted it which didn't interfere with installing the home because the home was installed from the side. The secret to getting a quality job is making sure the screwpiles are installed in the right places and in a straight line.
The picture to the right is the same site as above and is ready for the movers to slide the home over on top of the screwpiles. This home has an 8 X 40 addition on the side which also sits on Screwpiles. The main structure is 14 X 64. We installed 3 rows of screwpiles which had to be carefully measured to be sure the screwpiles were directly under the carrying beams.
The mobile home to the left was moved onto the screwpiles in the photo above. The movers placed steel beams on the ground and the home is slid over onto the screwpile foundation. The home was moved about 40 feet. The cost of this project was about $15,000. It is a small investment to have your home on a solid foundation.
The two mobile home pads above are almost identical. The one on the left has the septic tank on the right because the homeowner wanted a deck on the other side.
The photo on the right has the septic tank on the left because the deck was installed on the right. You will notice that both pads are built up a bit, so water runs away. We always discuss the site work with the homeowner to make sure the work being done works for them.
The photo on the left has the septic tank at the back, it's out of the way and protected. The services for the home are in the middle of the pad so they won't get destroyed when the mover backs the new mobile home over the screwpiles.
The photo on the right has the septic connected to the village system but has a drilled well for water. Click this text for information on building your own screwpiles.