Showing results 1 - 100 of 124
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A floor cavity between the first and second floor can provide a conditioned space for HVAC ducts if the rim joists are insulated and air sealed, if sufficient space is available, and if open-web floor joists are used
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A raised wood pier foundation can raise the subfloor above the design flood elevation.
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A typical older masonry home with unreinforced brick walls, wood floors, and a wood roof
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Adding air-sealing and rigid foam insulation at the wall-to-overhanging floor juncture at the outside corner of an existing home
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After setting precast concrete basement walls on an 8-inch bed of trap rock, this builder sprayed 2 inches of closed-cell spray foam directly onto the ground then laid piping for radiant floor heating before pouring the concrete floor slab.
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Air seal the floor above an unconditioned basement or crawlspace and make sure floor insulation is in full contact with the underside of the subfloor.
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Air seal the top, bottom, and sides of a cantilevered floor cavity and ensure that insulation is in full contact with all sides without voids.
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Air-seal the floor above a garage when there is living space above the garage and make sure floor insulation is in full contact with the underside of the subfloor.
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An IR camera image shows gaps around HVAC flue pipes allow conditioned air to leak through blown fiberglass into the attic
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Buildings damaged by a hurricane storm surge: upper homes on gulf shoreline were hit by large waves above the lowest floor, lower left home on bay and right school 1.3 miles from gulf shoreline were hit by surge and small waves.
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Closed-cell spray foam insulation covers the attic floor to provide a continuous air control layer.
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Do not install carpet in areas that are likely to get wet, such as bathrooms, kitchens, entry ways, or laundry rooms.
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Floor cavity air pressure is measured by placing a tube into the floor cavity through a small drilled hole
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Floor cavity pressure is measured by inserting a tube into the floor cavity using an extension pole
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For homes built in V Zones a registered professional engineer or architect must certify that the lowest floor elevation is above the BFE and piles and structure are anchored to resist flotation, collapse, or lateral movement due to combined wind and water
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Framing anchors, anchor bolts, joist hangers, and bridging pieces all help to tie the components of the floor system together and to the foundation to increase resistance against seismic forces.
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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.
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In Coastal A Zones and V Zones best practice is to construct the home so the bottom support of the lowest floor is above the 100-year wave crest elevation.
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In cold climates, plumbing pipes should not be located in the building cavities over the garage
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Infrared imaging shows cold conditioned air pouring out of the open floor cavities under this attic kneewall into the hot unconditioned attic
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Install rigid insulation and finish material below the framing and cavity insulation of a building overhang
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PEX piping is laid over 2 inches of XPS before the slab is poured to create a radiant floor heating system in this extensive home remodel.
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PEX piping loops are laid before the slab is poured for this radiant floor heating system
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Plan view showing seismic strengthening of brick wall by anchoring the embedded wood floor joists with solid wood blocks attached to the floor joists with steel angles and to the masonry wall with through-wall anchors and steel plates
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Recommended construction for homes in Zone B (areas of moderate flood hazard between the 100-yr and 500-yr flood) and Zones C and X (areas of minimal flood hazard above the 500-yr flood).
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Retrofit of cantilevered foundation wall showing details at the inside corner for installing closed-cell spray foam in the wall and overhanging floor
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Retrofit of cantilevered wall showing details at the inside corner for installing air sealing and rigid foam insulation in the wall and overhanging floor
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Retrofit of cantilevered wall showing details at the outside corner for installing air sealing and rigid foam insulation in the wall and closed-cell spray foam in the overhanging floor
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Retrofit of cantilevered wall with beam showing details at the outside corner for installing air sealing and rigid foam insulation in the wall and overhanging floor
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Retrofit of cantilevered wall with beam showing details at the outside corner for installing air sealing and rigid foam insulation plus water control membrane in the wall and overhanging floor
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Right - Air barrier is present and installed between the floor system and unconditioned space.
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Right - Closed-cell spray foam covers the ceiling and joists to insulate and air-seal the ceiling deck.
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Right - Foil-faced polyisocyanurate insulating rigid foam sheathing is installed below the floor framing of this house built on piers; however, the seams should be sealed with metal taped and the plumbing elevated and protected.
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Right - Foil-faced polyisocyanurate insulating rigid foam sheathing is installed rather than fibrous insulation below the floor framing of this house built on piers
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Right - Retrofit of an existing basement slab by adding dimple plastic mat, rigid foam insulation, and a floating subfloor.
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Right - Spray foam insulation air-seals the ceiling-to-drywall seams at the wall top plate.
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Right - The ceiling above the garage is air-sealed and insulated with spray foam.
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Right - The existing basement slab is retrofitted by installing a dimple plastic drainage mat, rigid foam insulation, and a floating subfloor.
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Right - The rigid metal HVAC ducting is installed between the floor joists rather than in an unconditioned attic or crawl space to minimize heat loss.
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Right – A mat is installed to contain radiant floor loops which distribute hot water from this home’s combi boiler.
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Right – Cantilever has been properly insulated, air sealed, and cavity has been blocked.
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Right – Engineered open-web floor joists provide space between floors for ducting.
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Right – Open web floor joists can provide a space between floors for HVAC ducting.
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Right – Spray foam insulation fills the header above the door and fills the rim joist between floors.
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Right – Workers lay radiant floor loops over the concrete reinforcement which is laid over a heavy vapor barrier installed over the sub-slab insulation before the slab is poured.
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Right-- IR photo shows how effectively spray foam insulated/air sealed attic kneewall and the floor cavities under kneewall
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Rigid foam insulation and a thin slab were installed over the dirt and gravel of this sealed crawlspace
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Spray foam insulation air-seals and insulates the floor above the garage; the joist will be filled with fibrous insulation in this flash-and-batt approach.
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Termite mud tubes on floor joists indicate the presence of termites in the crawlspace
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The application of intumescent coating/protection layer protects this elevated floor system from below.
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The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation
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The ceiling over an unconditioned space is insulated with closed-cell spray foam that fills the ceiling cavities and encapsulates the framing
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The components of a framed wall include from inside to out: gypsum, wood studs, OSB or plywood sheathing, and siding.
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The ducts are located in conditioned space in open-web joists between the floors and supported to prevent sagging.
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The existing slab is retrofitted by coating with epoxy paint, then installing rigid foam insulation and a floating subfloor.
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The existing slab is retrofitted with epoxy paint, rigid foam insulation, sleepers (furring strips), and subfloor.
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The floor cavities under this attic kneewall are completely open to the unconditioned attic space and a prime target for wind washing
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The open-web roof and floor joists, laminated beams, and I-beams reduce raw lumber use and increase load-bearing capacity, while resisting shrinking, twisting, splitting, and warping.
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Thermal and air barriers at rim joist or new blocking prevent Infiltration of unconditioned air into the floor cavity
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Thermal mass stained concrete slab absorb solar heat during the day and release it into the rooms at night.
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These floor joist bays have been properly air sealed with caulked rigid foam insulation
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Thick beads of caulk will form a continuous seal between the subfloor and the wall’s bottom plate to keep out air and bugs.