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NATURAL VIRGINVirgin UHMW is a relatively low cost abrasion, impact, and chemically resistant material. Orange UHMW Virgin SheetVirgin UHMW is a relatively low cost abrasion, impact, and chemically resistant material. POLYPROPYLENE FLUTED SHEET
They do not look like the strongest screws you can use but they seem to work in a pinch and are probably the cheapest option available. The material is screwed into place instead of being nailed. This concept may be a good idea but it looks like the design flaws are going to keep a lot of customers away. But then most brands of underbelly construction materials do not use the toughest material possible. That seems to be the only option available and marketed as RV aluminum underbelly material.
AccessiBelly RV Underbelly
NATURALPET is a strong and lightweight plastic that is widely used for packaging foods. They also seem to crack and dent very easily as another owner was not happy to see what was going on underneath his RV when he changed a tire. Either way, you should have good protection underneath your RV when you are on the road.
I would love to have those but made do with cardboard instead. I picked up several sheets from the toilet tissue/paper towel skid at the supermarket. I did ask first and they said, "go for it." So I did, I scored 3 large sheets and had enough to do my stash.
Corrugated Plastic Sheet Manufacturer
I just discovered that my local Home Depot carries Coroplast plastic storage boards. Many of you use AlaskaSunshine's fabulous method of storing fabric, and that is what she recommends. PET Sheet
Coroplast® is North America’s market share leader and largest manufacturer of corrugated plastic sheet for signs and re-usable packaging. We did find a video that explained a little bit about this product. It is just another corrugated version of underbelly material. The big difference is that it is laminated for extra protection. The same spec sheet only mentions that there is a fully enclosed underbelly and does not discuss the construction materials used to create that area. Any mention of RV Armor refers to RV roofing materials that are supposed to be strong.
Coroplast® Print
ORANGEFluted Polypro is ideal for widespread applications, most commonly for signage. POLYPROPYLENE FLUTED SHEET
They want to be able to attach the underbelly as quickly and as cheaply as they can. This material can be held in place by self-tapping screws. The stuff I got from Home Depot was a bit thinner and "stiffer". It was also black on one side and white on the other. Be sure to write down the item name and the store SKU# so they can help you find it easily.
Online statistics
Home Depot also sells flex mend and other underbelly materials. We have come across two materials that different RV makers use to create the underbelly. It is a little more expensive than the alternative but it is tough and makes sure your components under the RV or trailer are well protected. For graphics, packaging, industrial and countless other applications, turn to Coroplast. With the most trusted brand name and the broadest product line in corrugated plastic sheet, we have an innovative solution for your materials needs. Like Coroplast, this is made from corrugated plastic but its design is to give you easier access to your components, hence the name.
Some owners suggested using the screws first and then covering the screws with tape for a better hold. It's the same coroplast as you would get from anywhere else. You can find Coroplast at this big box store and it seems to be sold in-store as well as online. The price will depend on what size you will want the material in.
Also, be sure to see if they have some in stock at your store before going. Open your image file to the full size using image processing software. When I described prices in my original post, I compared 4 mm Coroplast for both sets of prices.
It seems that while this design provides easy access for a technician to make repairs, it can drop without notice just as easily. The self-tapping screws make it easier to add plastic to the frame. The Coroplast option is probably the cheapest option. It comes in sheets and is easily installed on the frame of your RV or trailer, etc. It is supposed to be a very tough material and can hold up very well if installed correctly.
