4.1104.2 Fiberglass Blown Insulation Installation (Lifting Siding)

Topic:

Walls

Subtopic:

Manufactured Housing Wall Insulation

Desired Outcome:

Consistent thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow and air barrier Air barrier The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary between the conditioned space and unconditioned space

Manufactured Housing

Title	Specification(s)	Objective(s)
4.1104.2a Access wall cavities	If skirting overlaps siding, skirting will be removed Fasteners will be removed from the bottom of the siding, working upward until the siding can be pulled away from the framing approximately 6" without damaging the siding Temporary fasteners will be installed near the bottom of the siding panels at the seams If a subsheathing is present under the siding, access through the subsheathing will be required	Gain access to the wall cavity without causing damage or separation of the siding
4.1104.2b Exterior wall cavity inspection	Installer prework assessment will be conducted to determine: Moisture damage Presence of infestation or pests Location and integrity of wiring Holes to the interior and exterior Loose paneling or siding Location of belt rails Location of wall obstructions (switches, outlets) Existing insulation Wall hangings for removal during work Problems will be corrected before work begins	Prepare wall cavity for insulation Prevent water leaks
4.1104.2c Blowing machine set up	Blowing machine pressure test will be performed with air on full, feed off, and gate closed Hose outlet pressure will be set according to manufacturer specifications	Achieve uniform insulation density and coverage
4.1104.2d Fiberglass blown insulation installation	Insulation will meet a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM ASTM ASTM International, www.astm.org E84 Insulation will be installed to a density of 1.5 to-1.6 pounds per cubic foot Using fill tube, 100% of each cavity will be filled to a consistent density Special precaution will be taken not to overfill the bottom of the cavity Fill tube will be inserted from the bottom of the wall cavity within 6" of the top of the cavity between the interior paneling and any existing insulation	Fire safety maintained Fill entire wall cavity to the prescribed R-value to reduce air infiltration Infiltration The uncontrolled passage of outside air into a building through unintended leaks in the building envelope Ensure bottom portion of siding will reattach properly Avoid clogging of the cavity and the fill tube
4.1104.2e Subsheathing patch and repair	Subsheathing will be patched or repaired as necessary	Ensure the integrity of the drainage plane
4.1104.2f Reattachment	If skirting was removed, skirting will be reinstalled to shed water to the outside of the skirting Siding will be reattached with new fasteners Siding will be reattached without bulges or wrinkles	Ensure the integrity of the drainage plane Reattach siding without damage
4.1104.2g Onsite documentation	A dated receipt signed by the installer will be provided that includes: Coverage area Thickness R-value	Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.17