Showing results 1 - 153 of 153
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A method for preventing waterproofing issues at the intersection of a concrete pier, concrete retaining wall, and concrete slab.
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Impervious surfaces like patio slabs, sidewalks, and driveways that are within 10 feet of the home should slope away from the house.
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Place plants at least 18 inches from the building's walls and foundation and direct irrigation water to spray away from the structure.
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The “perimeter cutoff and dewatering” approach can be used to control groundwater in cases where the building foundation is below the groundwater table.
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A common method of addressing significant groundwater leakage in the foundation is to line the entire foundation assembly, including the slab, with a drainage layer.
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A common method of addressing significant groundwater leakage in the foundation is to line the interior perimeter of the foundation with a drainage layer.
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A dimpled rain mat and perforated drain pipe provide drainage around the basement foundation.
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A drywell, shown here used for downspout catchment, can also be used to receive water from a French drain.
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A method for preventing waterproofing issues at the intersection of a concrete column, concrete slab, and concrete pier.
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A method for preventing waterproofing issues at the intersection of a concrete slab and a rock anchor.
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A method to ensure waterproofing continuity across the elevator pit of a multistory multifamily building.
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A paint-on waterproofing covers the exterior and tops of the concrete block foundation walls and piers to block moisture moving up through the concrete, while foil-faced R-13 insulation lines the inside surface of the exterior walls.
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A sprayer-applied waterproofing covers the grout-filled top course of concrete foundation blocks to prevent moisture migration from the ground into the framing.
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An exhaust fan pulls damp air out of a retrofitted sealed crawlspace while drawing in dry air from the living space
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An uninsulated (or existing insulated) basement slab is retrofitted to reduce moisture transmission by sealing with epoxy paint.
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Any holes through the vapor barrier installed over the basement floor slab are thoroughly sealed as part of the foundation water barrier system.
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Because the above-grade potions of the wall lack exterior insulation, condensation and even ice form during cold winter conditions
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Before sealing and insulating the crawlspace, the windows were sealed, the window wells backfilled, and sumps pumps were installed that discharged to the gutter downspouts
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Building perimeter detail view of the recommended approach for groundwater management in cases where the foundation is entirely above the groundwater table.
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Buoyancy force on dry floodproofed homes with deep basements leads to possible foundation damage
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Comprehensive above-grade water management details for a crawlspace foundation include a capillary break over the crawlspace floor, slope the surface grade away, installing gutters that slope away, and capillary break under sill plate.
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Comprehensive water management features include a capillary break (≥ 6-mil polyethylene sheeting) at all crawlspace floors
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Concrete (4 inches thick at 5% slope) provides a pest-resistant perimeter around the foundation
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Concrete pavers set in 4 inches of sand provide a pest-resistant ground break at the building perimeter.
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Design the roof, walls, foundation, and site to drain water away from the structure on all sides.
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Drainage and waterproofing system components in a basement, single perimeter drain system, footing detail
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Effectively manage below-grade water in urban sites to prevent moisture issues in new and existing buildings. This foundation wall has been waterproofed to prevent water infiltration.
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Exterior fiberglass insulation on this new home was (incorrectly) cut to terminate below-grade after backfill, which will expose the above-grade portions of the foundation wall to cold temperatures
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Exterior XPS basement insulation is correctly installed to completely cover the foundation wall
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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
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Good water management practices like sloping grade away from house, and installing gutters, perimeter drain pipe, a capillary break, and free-draining soils or drainage mat protect the foundation from water saturation.
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Green Coast Enterprises built this New Orleans home on piers so that the floor is 1 foot above the base flood level; borate treated framing and closed-cell spray foam insulation add to the home's moisture resistance.
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ICF bricks are stacked to form hollow walls that are reinforced with steel rebar before the concrete is poured in
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Interior and exterior footing drains keep moisture away from the foundation. Spray-on water proofing helps the concrete foundation walls resist moisture.
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Intermittent water leaks have been injection sealed to prevent water infiltration into the foundation.
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Repair leaks and cracks, and cover holes in foundation floors and walls to minimize water and vapor entry.
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Right - Basement slab with a capillary break of either gravel or a drainage mat.
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Right - Below-grade concrete has been properly sealed against moisture and is now having insulation installed.
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Right - Permeable rigid mineral wool insulation and appropriate water-management flashing details are integrated with new rigid foam siding to keep water away from the sill beam above the foundation wall
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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 - 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 service penetration in the waterproofing membrane is well-sealed, and there is a drainage mat acting as a protective layer on the interior of the soldier piles and wood lagging.
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Right - This waterproofing membrane on the interior of a deep soldier pile foundation with wood lagging is continuous, and penetrations through the membrane have been sealed.
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Right – A dimpled plastic rainscreen product is installed over liquid-applied waterproofing on the exterior of the ICF foundation walls, directing water down the wall to the perimeter drain tile, thus encouraging drainage around the foundation.
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Right – A sump pump with a perforated sump pit was installed in the crawlspace slab to reduce water accumulation under the slab
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Right – Because this home is in a coastal location that may flood the crawlspace is vented and the home is constructed on metal piers.
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Right – Foil-faced insulation was added after the crawlspace was dried and sealed by diverting water runoff, sealing off crawlspace windows and vents, and adding sump pumps and exhaust fan ventilation
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Right – Foundation drainage mat was installed over the waterproof membrane that covers the sealed crawlspace window
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Right – House without gutters has waterproof liner, drain tile, and gravel bed extending more than 5 feet from foundation
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Right – Polyethylene sheeting completely covers the aggregate and the footing with no tears or open seams
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Right – Polyethylene sheeting is laid over aggregate and over footing to provide a capillary break between the ground and the slab and between the footing and the stem wall
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Right – Polyethylene sheeting vapor barrier is installed and sealed to the crawlspace walls with mastic
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Right – Rain barrel installed with an overflow spout terminating at least 5 feet from foundation
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Right – The drain slopes away from the foundation and terminates at the proper distance
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Right – The drain tile connects to a sump pump which will pump water away from the foundation
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Right – The drain tile is installed along the bottom of the entire foundation footing
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Right – The drain tile is wrapped in fabric which will prevent it clogging with debris
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Right – The insulated concrete forms that are below-grade have a damp-proof coating to prevent moisture seeping into the foundation
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Right – The seam between the slab and the foundation wall is sealed with urethane caulk.
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Right – The slab is coated with two coats of epoxy paint to minimize moisture transfer through the slab from the ground.
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Right – This crawlspace window was completely sealed off on the inside and outside with air barrier and water-proof materials and the window well was filled in to an above-grade height to prevent bulk water from entering the crawlspace
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Rigid insulation and water control layers are installed on the exterior of a flat foundation wall; spray foam insulates the rim joist
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Spray foam extends down the foundation wall to the slab, which has been retrofitted by adding dimple plastic drainage mat and rigid foam insulation.
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Spray foam extends down the inside of the foundation wall to the uninsulated slab; because the wall lacked exterior perimeter drainage, the slab was cut and an interior footing drain was installed.
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Spray foam insulation extends down the foundation wall to the slab, which has been retrofitted by cutting the slab to install drainage mat against the wall and a new perimeter footing drain, along with rigid foam plastic above the slab.
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The “continuous waterproofing” approach can be used to control groundwater in cases where the building foundation is below the groundwater table.
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The “draw down” approach can be used to control groundwater in cases where the building foundation is below the groundwater table.
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The below-grade wall assembly includes dampproofing, draining details, and insulation.
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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 leaks in this foundation wall have been injection sealed to prevent water infiltration into the foundation.
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The pier foundation that lifts this home above flood waters is visible in this photo taken before the skirt walls were added.
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The recommended approach for groundwater management in cases where the foundation is entirely above the groundwater table.
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The seams of the rigid insulation are not taped and it will not provide a complete capillary break
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The sheathing has rotted because there was not a sufficient drainage gap behind the stucco cladding
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The top course of these concrete masonry unit (CMU) crawlspace foundation walls and piers is filled with grout then sprayed with a waterproofing membrane that acts as a capillary break and prevents moisture from migrating into the framing material.
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There is polyethylene sheeting installed to provide a capillary break between the ground and slab
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This building foundation has a drainage layer located on the exterior of the waterproofing membrane.
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This exterior wall retrofit permits drying to the exterior of a sill plate installed on an untreated flat foundation wall
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This house design in the Hot-Humid climate uses a slab foundation, masonry walls, and an Exterior Insulation Finish System (EIFS) cladding.
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To handle the high water table on this lot, the builder installed underground drain pipe to french drains for slow dispersal of storm runoff, then set the floor joists on steel framing set 4 ft above grade on 35-foot-deep piers.
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To help keep the monolithic slab-on-grade foundation dry, the site’s surfaces is graded away from the structure, the slab is poured on a bed of gravel, and using a vapor barrier will separate the foundation from the sill plates.
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Traditional methods of site drainage, such as site grading, can be difficult to achieve on urban sites.
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Water-proof materials cover the exterior side of crawlspace windows in a crawlspace retrofit, while foil-faced rigid foams seals and insulates the inside face of the openings
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Wrong - Class I vapor retarder over framed basement walls can cause condensation, mold, and rotting because plastic prevents drying to the inside; the outside should have waterproofing and vertical drainage, and the framing should be spaced from the wall.
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Wrong - The below-grade concrete does not have the correct construction to be impermeable to moisture because the lumber is untreated and against the concrete that lacks waterproofing.
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Wrong - The upper edge of the below-grade dimpled plastic rain mat is pulling away from the wall and is no longer tucked under the protective metal flashing so rain water can get behind the plastic mat and wet the foundation wall.
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Wrong - This surface downspout run-out is directed toward the foundation instead of away from it.
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Wrong – A poorly sealed window and window well allow bulk water to enter the crawlspace from ground that slopes toward the structure
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Wrong – Drain pipe has been cut and foundation penetration has not been properly sealed
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Wrong – No polyethylene sheeting vapor barrier is installed on the crawlspace floor
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Wrong – Polyethylene sheeting does not completely cover the aggregate and the footing
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Wrong – Polyethylene sheeting does not extend beyond edge of aggregate to separate the footer from the stem wall which will be poured next
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Wrong – Rain barrel installed without an overflow spout that terminates away from foundation
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Wrong – The drain tile is cut and now does not extend around the entire foundation footing
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Wrong – The drain tile is not installed to terminate properly and will not transport water to the exterior
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Wrong – The drain tile is not wrapped in fabric and could become clogged with debris
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Wrong – The gravel surrounding the drain tile is too large and will let too much debris through
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Wrong – The insulated concrete forms at the foundation do not have a damp-proof coating
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Wrong – The polyethylene sheeting vapor barrier is not attached to the piers with mechanical fasteners
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Wrong – There are no gutters installed and there is not a proper gravel bed located at the foundation
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Wrong – This vented crawlspace has standing water because steps were not taken to address site conditions that led to bulk water flow into the crawlspace