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Filler blocking
Filter access panel includes gasket or comparable sealing mechanism and fits snugly against the exposed edge of filter when closed to prevent bypass
Filter located and installed so as to facilitate access and regular service by the owner
Finished raised ceiling duct chase
Fitting rigid foam in garage wall rim joist cavities
Flashing at bottom of exterior walls with weep holes included for masonry veneer and weep screed for stucco cladding systems, or equivalent drainage system
Flashing at bottom of exterior walls with weep holes included for masonry veneer and weep screed for stucco cladding systems, or equivalent drainage system
Flashing at bottom of exterior walls with weep holes included for masonry veneer and weep screed for stucco cladding systems, or equivalent drainage system
Flashing is installed above the foundation wall before installing the siding. Seams in sheathing are sealed with tape and caulk, while nail holes are sealed with caulk.
Flex duct compressed by plumbing pipes
Flex ducts are compressed
Flex ducts may rest on ceiling joists or truss supports
Flexible Duct Materials & Assembly
Flexible ducts in unconditioned space not installed in cavities smaller than outer duct diameter; in conditioned space not installed in cavities smaller than inner duct diameter
Flexible ducts supported at intervals as recommended by mfr. but at a distance ≤ 5 ft
Flexible rubber through-wall flashing
Floor joist cavities can make acceptable duct chases
Floor joist cavities can make acceptable duct chases
Foam holes for plumbing in the top plate, sill plate, or subfloor
Foam wiring holes in top plate
Foil-faced rigid foam and spray foam can be used to insulate a basement on the interior; use good moisture management techniques to keep the basement dry
Footing drain pipe is located exterior of the footings below the slab and is surrounded by washed stone and filter fabric.
For fireplaces that are not mechanically drafted or direct-vented to outdoors, total net rated exhaust flow of the two largest exhaust fans is .15 CFM per 100 sq. ft. of occupiable space when at full capacity
For slabs on grade in CZ 4 and higher, 100% of slab edge insulated to ≥ R-5 at the depth specified by the 2009 IECC and aligned with thermal boundary of the walls
Form a sheet metal shield around the flue pipe
Form sheet metal shield around pipe keeping 3-inch clearance
Form sheet metal shield around pipe keeping 3-inch clearance
Formable pan flashing and back dam for window
Formula 4.2 from ASHRAE 62.2-2010 for fan flow rate required to achieve an effective ventilation rate
Four inches of rigid foam separate the concrete slab from the ground and the foundation walls.
Frame, insulate, and air seal the walls of the skylight shaft as you would an exterior wall
Framing allowed duct work to be properly installed without compression
Framing is built around the window before exterior rigid foam is installed on the exterior walls around the window.
Fresh air inlet located in ceiling of covered porch
Fresh air inlet located in eave of roof
Fresh air inlet on side of house
Function of controls is not obvious
Function of ventilation controls is obvious (e.g., bathroom exhaust fan) or, if not, controls have been labeled
Furnace filter resistance varies by surface area; deeper pleats add surface area
Furnace filters that are MERV 6 or higher protect the HVAC equipment and improve indoor air quality
Furnaces, boilers, and water heaters located within the home’s pressure boundary are mechanically drafted or direct-vented
Furred-out siding
Furring strips are installed over a foil-faced rigid foam sheathing to provide a drainage plane and ventilation gap behind siding.
Furring strips provide a ventilation gap between the coated OSB sheathing and the fiber cement siding.
Gaps at shared common walls can be a significant source of air leakage in multi-family buildings
Garage ceiling with spray foam flash air seal plus batt insulation
Garage wall rim joist open to area between or under floors of living space
Gasket installed along entire seam of the modular home marriage joint
Gaskets provide air sealing around the plumbing fixtures.
Grade-level drainage
Green Extreme Homes in partnership with Carl Franklin Homes provided a gut-rehab to this 1953 suburban home in Garland, Texas which became the nation’s first renovated home certified to the U.S. Department of Energy (DOE) Zero Energy Ready Home program.
Grill and duct size based on calculated requirements for net free area
Gutter channel
Hand tools for cutting fiber board sheets include a knife, straight edge, and color-coded edge-cutting tools
Hanger straps should be at least 1.5 inches wide
Headers over windows and doors are insulated rather than solid wood.
Headers over windows on non-load-bearing walls are open to allow room for insulation.
Heat Recovery Ventilator (HRV) or Energy (Enthalpy) Recovery Ventilator (ERV)
Heated air flow is produced when the heating cycle is energized (set thermostat to “heat”)
Hidden sheet metal baffles prevent the transmission of light and sound through the transfer grille
High-Efficiency Gas Furnace
Holes in the exterior walls are flashed and flashing is integrated with housewrap before installing rigid mineral wool insulation.
Home performance program labels are displayed on the electric panel showing the certifications this home has receivied, including ENERGY STAR Certified Home, the EPA Indoor airPLUS, and the Home Energy Rating System (HERS) score.
Hot water for the home’s radiant floor heating system comes from roof-mounted solar thermal panels and an air-to-water heat pump provide.
Hot water recirculation loop runs through an insulated pipe under the home’s concrete slab.
House wrap is sealed at all seams and overlaps flashing to serve as a continuous drainage plane over the exterior walls.
How Much Water Do We Use?
HVAC duct layout
HVAC ducts can be encapsulated in 3 inches of closed-cell spray foam, then buried in R-49 of blown fiberglass insulation after the ceiling drywall is installed in the vented attic.
HVAC ducts, cavities used as ducts, and combustion inlets and outlets may pass perpendicularly through exterior walls but shall not be run within exterior walls unless at least R-6 continuous insulation is provided on exterior side of the cavity
ICF blocks used for the foundation walls consist of two sheets of rigid foam held together by plastic spacers and reinforced with steel bars forming a hollow wall that is filled with concrete for an ultra-efficient foundation system.
ICF forms are filled with the use of a concrete pumper truck
ICF foundation walls wrap the floor slab in R-22 of insulation while the entire space under the slab is covered with 4.3 inches of closed-cell spray foam.
ICF walls and an attic sealed and insulated to R-63 on the underside of the roof deck with 10 inches of open‐cell spray foam plus 2.7 inches of closed‐cell spray foam provide a complete thermal break around this home.
ICFs provide continuous wall insulation from the roof to the footing with very little thermal bridging
Identify what materials will constitute the continuous air barrier around the building envelope.
Identify what materials will constitute the continuous air barrier around the building envelope.
IECC and IRC minimum insulation requirements for new homes

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