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Factory construction practices offer a climate-controlled environment for constructing high-performance homes.
Fan CFM rating is higher than the requirement increasing the likelihood that it will meet the performance level once installed
Fan CFM rating is higher than the requirement increasing the likelihood that it will meet the performance level once installed
Fan exhaust ducts vent out through the soffit vent.
Fan housing was oriented in the correct direction to allow proper exhaust duct installation
Fan housing was oriented in the correct direction to allow proper exhaust duct installation
Fan shares exhaust and does not have dack-draft damper installed
Fan shares exhaust and has a back-draft damper installed
Fans from seperate dwellings exhausted together without back-draft dampers and not sealed
Fiber board sheets are available with pre-cut shiplapped ends
Fiberglass duct board typically comes in sheets 4 foot wide by 10 foot long
Fill area around shield with insulation
Fill in the hole left by the missing top plate with a rigid air blocking material or rolled batt insulation that is spray foamed in place
Fill the joist bays with fiberglass batt orspray foam
Fill the joist bays with fiberglass batt or spray foam
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 gasket installed beneath sill plate
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
Gasket installed at marriage wall connection prior to assembling modules
Gasket installed at marriage wall connection prior to assembling modules
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.

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