Code of Maine Rules
02 - DEPARTMENT OF PROFESSIONAL AND FINANCIAL REGULATION
385 - MANUFACTURED HOUSING BOARD
Chapter 900 - USED MANUFACTURED HOME INSTALLATION STANDARD
Subpart 2 - SITING AND FOUNDATION SYSTEMS
Section 385-900-2-4 - PLACEMENT
Current through 2024-38, September 18, 2024
2-4.1
Clearances.
2-4.1.1
Clearance Under Home. A minimum clearance of 12 in. shall be maintained beneath the lowest member of the main frame (I-beam or channel beam).
2-4.1.2
Elevated Manufactured Homes. When the manufactured home is installed on a basement or split entry type foundation over a habitable lower-level area, or when more than one-fourth of the area of the manufactured home is installed so that the bottom of the main frame members are more than 3 ft. above ground level, the foundation system shall be designed by a registered professional engineer or architect. Appendix C can not be used for any elevated installation or in combination with the manufacturers instructions.
2-4.1.3
Removal of Manufactured Home Transportation Components at the Time of Installation. No portion of a manufactured home shall be removed when located on its home site unless it is designed to be removed in accordance with HUD's and the manufacturer's instruction.
2-5.1 VENTILATION
2-5.1.1 Access to and Ventilation of Underfloor Areas.
(a) Provisions shall be made to minimize condensation in underfloor areas through ventilation openings or other suitable means.
(b) If combustion air for heat appliance(s) is taken from within the underfloor areas, ventilation shall be adequate to assure proper operation of the appliance(s).
(c) A minimum of four ventilation openings shall be provided from the underfloor space to the exterior. One shall be placed at or near each corner as high as practicable. Their total net free area shall be calculated by:
A = the area of the crawl space, square feet
a = the total net free vent area
Openings shall provide cross ventilation on at least two opposite sides. The openings shall be covered with corrosion resistant wire mesh not less than 1/8 in. and not more than 1/2 in. in any dimension or with openings designed to retard entry of dry vegetation, waste material, or rodents.
2-6.2.2.
Intake air for ventilation purposes shall not be drawn from underfloor spaces of the home.
2-6.2.3.
Moisture producing devices, such as dryers, shall be vented to the atmosphere in such a manner to insure that moisture laden air is carried beyond the perimeter of the home.
2-6.2.4
Under floor Continuous Ground Cover/Vapor Retarder.
If a ground cover is required, a uniform 4 to 6 mil. polyethylene sheet material or other acceptable membrane materials shall be installed for this purpose.
2-6.2.5
Skirting
General installation.
Skirting, if used, shall be installed in accordance with the manufacturer's installation instructions. It shall be secured, as necessary, to assure stability, to minimize vibrations, to minimize susceptibility to wind damage, and to compensate for possible frost heaves. Access opening(s) not less than 18 in any dimension and not less than 3 sq. ft. in area shall be provided and shall be located so that any water supply and sewer drain connections located under the manufactured home are accessible for inspection. Such access panel(s) or door(s) shall not be fastened in a manner requiring the use of a special tool to remove or open same. On-site fabrication of skirting shall meet the objectives cited herein.
