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 2024-29, July 17, 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:
1. a = A/150 or
2. a = A/600 if the home is installed on a
				  concrete slab or with a ground cover in accordance with 2-6.2.4. where:
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
(a)
				  Materials. Skirting, if used, shall be of durable materials suitable for
				  exterior exposures.
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.