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Interior non-load bearing walls are 2x4 studs spaced 24-inchon- center, can have non-structural connectors
Interior removable storm window sample
Interior storm window on double-hung original window
Interior storm window on double-hung original window
Interior wall attached with top plate metal connector, drywall clips support drywall, plan view
Interior wall attached with top plate metal connector, drywall clips support drywall, side view
Interior wall post support detail plan view
Interior wall post support detail side view
Intermittent supply and exhaust fans rated at ≤ 3 sones by manufacturer, unless rated flow ≥ 400 CFM
Jump ducts are installed in the ceiling to connect closed rooms with open space to provide a return air path and balance air pressure
Key elements of a wall system clad with insulated vinyl siding
Kitchen exhaust properly installed and sealed with mastic
Kitchens should be equipped with an exhaust fan that vents directly outdoors
Ladder framing detail side view
Ladder framing detail, plan view
Lapped and taped polyethylene sheeting
Lay out duct so that no radius of a bend or turn is less than the diameter of the airway
Lay out the rigid foam sheathing joints so they do not align with the window and door edges
Leaks at the air filter cover panel can draw in unconditioned or undesirable air
LED lights can be connected and controlled remotely via a communications bridge.
LEDs are especially efficient in fixtures that send light in one direction, like track lighting
LEDs cut energy costs by using less watts to produce the same amount of light as other light sources.
Lifting plates attached to the wall provide good bracing to tighten up SIP panel seams
Light tubes adjacent to unconditioned space include lens separating unconditioned and conditioned space and are fully gasketed
Locate the fresh air intake away from pollution sources and in an easily accessible location
Make sure the beads of caulk are continuous the full length at each SIP panel seam, such as at the wall-roof seam, to maintain air barrier continuity
Manual D details show duct size and chase path
Manufacturer labled controls
Manufacturer labled ventilation switch
Manufacturer’s label found on this exhaust fan housing shows a sone rating of 2.5
Marriage joints between modular home modules at all exterior boundary conditions fully sealed with gasket and foam
Material Properties of Rigid foam Insulation
Measure the depth of insulation
Mechanical damper installed
Mechanically fastened and sealed
Mesh screen is correctly installed and gaps are less than 0.5 in.
Mesh screen is correctly installed and gaps are less than 0.5 in.
Mesh screen is spaced wider than 0.5 in. allowing insects to enter
Mesh screen is spaced wider than 0.5 in. allowing insects to enter
Metal strap is too small and is compressing duct
Metal strap is too small and is compressing duct
Misaligned floor insulation
Modified truss to allow for raised ceiling sections for ducts
Moisture infiltration in below-grade wall
Moisture problems must be dealt with before sealing and insulating a crawlspace
Mold growth
Mold growth
Mold on drywall
Mold on OSB sheathing
Mold on wall, baseboard, and carpet
Monolithic slab with a grade beam
Mulch can provide many benefits to a landscape.
National Fuel Gas Code (NFPA 2012) identifies four categories for combustion furnaces and water heaters based on combustion type (sealed or unsealed) and vent pipe temperature
Naturally drafted heater installed. Requires combustion safety testing
Naturally drafted water heater installed. Requires combustion safety testing
No gasket at filter location
No gasket installed at marriage wall connection prior to assembly
No gasket installed at marriage wall connection prior to assembly
No insulated sheathing seams are visible from the inside during framing
No insulation installed in cavity and not air sealed
No mechanical damper installed
Non-ICAT-rated recessed lights waste energy
Don’t install polyethylene sheeting over batt insulation in warm humid climates; the sheeting can trap moisture in the wall providing a breeding ground for mold.
One way to air seal and insulate kneewalls – add insulation and a rigid air barrier along roof line of unconditioned attic space outside kneewall
Open floor trusses used as return air plenums can draw air from any place connected to that floor
Open sump pump
Override control switches centrally located near thermostat for ease of access
Packing tape has been removed and damper will be able to function properly once fan is installed

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