Flex Mend

105" Wide Underbelly Kits with Flex Mend Tape

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  • 105" Wide Underbelly Kits with Flex Mend Tape
  • 105" Wide Underbelly Kits with Flex Mend Tape
  • 105" Wide Underbelly Kits with Flex Mend Tape
  • 105" Wide Underbelly Kits with Flex Mend Tape
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There is a myriad of things that need attention on your RV or mobile home. From the engine to the skirting and everything in-between, there's a lot to keep track of and repair. One of the areas that is often neglected is the underside of your vehicle or living space. Sadly, this is a prime area for environmental encroachment. Either from water, insects, animals, road materials, or other invasive entities, there's a lot that can get into your home without your knowledge. That's why you need to keep your underside protected with the industry standard since the 1980s; Polyethylene Underbelly.

Polyethylene Underbelly is a stout cloth material that has been used in the manufacture of mobile homes for decades. OEMs have used this black cross-hatched fabric, reminiscent of the same material you would find in a tarp (standard use, not construction grade) in the protection of mobile homes, trailers, sheds, RVs, homes, and other residential applications. Because it is flexible, easy to install, tear-resistant, and water-repellent, it is ideal for protection against water encroachment under your vehicle.

While it is incredibly durable, it will from time to time become damaged. Whether by tearing, natural wear, or another incident, this fabric can need replacing from time to time. When the time comes to repair damaged areas of your RV underside, you will need a qualified product. RecPro now offers this vital underbelly material in a kit, so you'll have everything you need to make necessary repairs.

The 105" Underbelly Kit with Flex-Mend Tape includes the cross-hatched Polyethylene Fabric with Flex-Mend 4" Underbelly Tape.

The basis for the protection of your underside is the Polyethylene Fabric, the construction of which allows it to withstand most standard pressures put on it by outside forces such as weather, road wear, and wildlife. At the available 105" width, this material will cover most standard sub-structures.

Similarly, Flex-Mend is a front-of-industry mending tape that not only matches the texture and look of bottom under-fabrics but is a permanent fixture once correctly applied. RecPro has chosen to include Flex-Mend Underbelly Tape because it is made from the same material as the fabric, comes in cut-to-length strips, and has a strong adhesive backing which can be applied directly to the problem areas. The specially-engineered adhesive applies easily and the woven poly-film will become a seamless part of the original fabric. Once it is used, almost immediately it becomes nearly impossible to remove without destroying surrounding structures.

Make sure and get the best material in the industry to repair your cloth underbelly or install a new covering by purchasing your kit (up to 40') from RecPro.


  • Fabric Width: 105"
  • Tape Width: 4"
  • Available in 10, 20, 30, and 40 foot Lengths
  • Color: Black
  • Cross-functional
  • Color: Black
  • Woven Mesh Support
  • Insulating Properties
  • Water and Temperature Resistant
  • Resists Tearing
  • Prevents wear on delicate underbelly components
  • Best for stationary mobile homes
  • Material is NOT breathable


ATTENTION: This cloth repair tape does not work well with solid materials. Older bottom boards will not receive adhesion as well as the woven poly fiber. If your bottom boards are too far gone for routine repair, total replacement is recommended.


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