Manufactured homes have many of the same problems in their crawl spaces as do stick built homes. These include standing water problems, poor drainage, contaminated or old ineffective insulation in the floor, mold and allergens and rodent infestation. Most manufactured homes do not have a standard crawl space in that very few are built on a foundation. Most are installed above ground and are supported by concrete pier blocks and/or concrete runners and tied down from there. Typically the perimeter of the home is surrounded by a “skirt”. The skirt provides a finished look to the home as well as a deterrent to rodents and other unwanted animals.
All access points for animals and rodents have to be sealed or screened. Simply spraying a foam substance in a hole is insufficient. The rats will eat their way through it no time. If the skirting is loose and offers many points of access you can either have the skirting replaced, (not cheap) or line the entire skirting inside the crawl with a wire screen and attach it to the skirting. This is the most effective way to deter rodents from reentering your crawl space.
Once the access points are blocked the crawl space can be restored to a fresh clean environment. It is important that once the insulation has been replaced that a new belly wrap is installed correctly. This is usually a 12 mil polyethylene plastic that attaches to the floor joists and must be glued to entire perimeter so that it is completely sealed. This is another deterre... Read More