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