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An oil-fired boiler with direct combustion air and exhaust venting
An on-demand hot water pump speeds water delivery to the low-flow plumbing fixtures for significant water and energy savings.
An outdoor shower off the master bathroom keeps heat and humidity outside for this hot-humid climate home.
An outside air duct brings in fresh air that is filtered and distributed to the home through the heat pump’s air handler and ducts. The system is electronically controlled in conjunction with the home’s exhaust fans for balanced ventilation.
An ultra-efficient (COP 5.7) ground source heat pump provides hot water to an air coil in the central air handler which uses a variable-speed electrically commutated fan motor to distribute conditioned air to the home’s ducts.
An ultra-efficient layer of R-20 rigid foam foundation insulation covers the ground underneath the vapor barrier and radiant floor loops, which will circulate water heated by an ultra-efficient geo heat pump.
Any holes through the vapor barrier installed over the basement floor slab are thoroughly sealed as part of the foundation water barrier system.
Application of window and door nonexpanding foam sealant
Apply caulk to wall framing
Apply roof underlayment over roof deck and up the sidewall over housewrap
Apply self-adhesive flashing over top edge of the wall flashing, diverter, and housewrap
Assembled section of fiber board duct
At the outlet of the dryer exhaust duct, install a hooded vent with a louvered damper
Attach the interior 2x4 wall to the exterior wall top plate with a flat metal connector plate
Attic knee walls are insulated with rigid foam and sealed with spray foam to help form a continuous draft barrier around attic rooms.
Autoclaved aerated concrete consists of sand, cement, and water, plus aluminum powder that reacts with the cement to form tiny bubbles that double the volume of the concrete, which then hardens to a lightweight, insulating product.
Awnings, overhangs, and porches shield windows and doors from sun, rain, and snow in this sunny mountain locale.
Back-draft damper still has a piece of tape that prevented it from rattling during shipping
Baffles above the raised heel trusses and wind dams behind the trusses will keep wind from blowing the cellulose insulation away from the eaves.
Baffles are installed to protect airflow from the soffits to the ridge vents before the ceiling drywall and attic insulation are installed.
Baffles made from sheet metal are installed to minimize sound and light transmission
Baffles provide an air space over the insulation to guide ventilation air from the soffit vents up along the underside of the roof deck
Baffles will keep insulation out of the soffit vents and wind out of the insulation in this vented attic.
Balloon-framed walls have no top plate to prevent air flow into wall cavity
Basement slab w/ capillary break
Bathroom exhaust fan can vent out through the wall or up through the roof
Bathroom exhaust fans are timer-operated to encourage removal of moisture from the home.
Bathrooms should be equipped with an exhaust fan that vents directly outdoors
Batt insulation is not an effective air barrier
Batt insulation should be cut to fit around wiring so that insulation can completely fill the wall cavity
Batt was properly split around wires to achieve RESNET Grade I
Because all of the structural load is carried by the SIP roof and wall panels, no trusses are needed, allowing the home to have vaulted ceilings and open interiors throughout.
Because flue temperatures are cool, intake and exhaust ducts on a Category 4 direct-vent sealed-combustion condensing furnace can be made of PVC
Because this ICF and spray foamed house is so well insulated, the HVAC system is smaller, the round metal ducts are smaller diameter, and the duct layout is more compact.
Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa
Bedrooms pressure-balanced and provide 1 sq. in. of free area opening per 1 CFM of supply air or achieve a Rater-measured pressure differential ≤ 3 Pa
Before installing drywall, contractors install two beads of a sprayer-applied elastomeric sealant along framing and top plates to forma a flexible, air-tight seal between the framing and dry wall.
Before installing the windows, the window rough openings are sealed with a liquid-applied flashing that provides a seamless moisture and air barrier to protect the wall from water intrusion.
Below-grade wall assembly
Between the ICF foundation walls, the builder sprayed closed-cell spray foam directly onto the gravel base to provide a vapor barrier and continuous layer of insulation under the slab.
Blown cellulose insulation completely fills the netted wall and ceiling cavities
Blown fiberglass insulation fills netted wall cavities
Blue stain
Bolted metal hurricane strapping ties the roofing to the framing and the framing to the foundation walls for resistance to high winds.
Boot has been covered with insulation and sealed with mastic
Boot has been covered with insulation and sealed with mastic
Boot is uninsulated
Boot to drywall connection not sealed
Boot to drywall connection sealed
Boot to floor connection not sealed
Boot to floor connection sealed
Borate-treated roof trusses and concrete masonry unit (CMU) walls are among the pest-resistant features of these Florida homes.
Bottom plate-subfloor joints, corners, and wiring holes are all sealed with foam to improve the air tightness of the homes.
Brick veneer rain-screen assembly
Build an air-tight rigid box to cover the exhaust fan
Builders use an infrared camera to “see” heat flow and air leakage around a window during construction.
Building cavities not used as supply or return ducts unless they meet Items 3.2, 3.3, 4.1, and 4.2 of this Checklist
Building materials have signs of water damage and high moisture content
Cantilever floor with insulation and air blocking
Cap nail securing a weather-resistant barrier
Capillary break at all crawlspace floors using > 6 mil polyethylene sheeting, lapped 6-12 in., and secured in the ground at the perimeter using stakes