Glossary › Bath
204 of 204 terms · A to Z
A decorative tile band or feature strip inset into a field of tile. A cost-controllable way to add detail without tiling the whole wall in premium tile.
Source: Wikipedia — Tile
A bathroom meeting Americans with Disabilities Act standards — clearances, grab-bar blocking, fixture heights, and turning space. Standards homeowners increasingly adopt for aging-in-place.
Source: U.S. DOJ — ADA.gov
Renovation choices that let homeowners safely stay in their home as they age — grab bars, no-step showers, seated bathing, slip-resistant floors. A growing driver of bath remodels.
Source: Wikipedia — Aging in Place
A tub that injects warmed air through tiny ports for a softer bubble massage that drains dry (more hygienic than water jets). Also needs a dedicated circuit.
Source: Wikipedia — Bathtub
A tub installed in a three-wall recess with one finished apron, the most common and economical bathtub configuration, typically paired with a tub-shower.
Source: Wikipedia — Bathtub
A budgeted dollar figure placeholder in the contract for an item not yet selected (e.g., tile, fixtures). If your final selection costs more than the allowance, you pay the difference — scrutinize low allowances in bids.
Valve technology (pressure-balance or thermostatic) required by code on showers and often tubs to prevent sudden dangerous temperature changes.
A trade worker learning a craft through a structured program of paid on-the-job training and classroom instruction under journeymen, the standard path into the skilled trades.
Source: U.S. DOL — Apprenticeship.gov
The licensed architect legally responsible for the design documents submitted for permit, certifying the design meets applicable codes and standards.
Source: Wikipedia — Architect of Record
Updated drawings that reflect the project exactly as constructed, including all field changes — invaluable for future remodels and locating concealed utilities.
Source: Wikipedia — As-Built Drawing
NEC requires at least one dedicated 20-amp circuit for bathroom receptacles; high-draw items (heated floor, whirlpool, towel warmer) need their own circuits — a frequent panel-capacity issue.
A code-required fan that removes moisture to prevent mold and finish damage, ducted to the exterior (never into the attic). The most neglected critical bath component.
Stripping the bathroom to studs and subfloor to rebuild everything including waterproofing. The scope most cost models assume and where hidden water damage surfaces.
Source: Wikipedia — Renovation
The budget band of a bath project — from a cosmetic refresh through mid-range and high-end to luxury — defined by scope, fixture grade, and whether the layout changes.
Source: Wikipedia — Renovation
A primary horizontal member that carries loads from joists or framing across a span to posts or walls. Opening up a floor plan usually means adding a sized beam.
Source: Wikipedia — Beam (Structure)
The recess in a wall or foundation that receives and bears the end of a beam. Cutting in new beam pockets is part of the cost when opening a load-bearing wall.
Source: Wikipedia — Beam (Structure)
A contractor's formal price proposal for a defined scope of work. Always compare multiple bids on the same written scope so you are comparing like for like, not just bottom-line numbers.
Source: Merriam-Webster — Bid
A plumbing fixture for personal washing, either a standalone unit or integrated. Standalone bidets require their own floor space and supply/drain rough-in.
Source: Wikipedia — Bidet
An electronic toilet seat with washing and drying functions that replaces a standard seat. Needs a nearby GFCI outlet and a supply connection — a popular retrofit.
Source: Wikipedia — Bidet
Wall-mounted spray jets adding a multi-outlet shower experience. Each outlet adds plumbing and may push total flow past what the valve and code allow.
Source: Wikipedia — Shower
A surety bond is a guarantee from a third party that the contractor will complete the work (performance bond) or pay subs and suppliers (payment bond). Bonding is a sign of contractor financial stability.
Source: Cornell Law LII — Surety
Finishing the interior of a commercial shell or tenant space to suit a specific occupant — partitions, ceilings, lighting, HVAC distribution, finishes and fixtures. The scope is usually spelled out in the lease as tenant improvements.
Source: Wikipedia — Tenant Improvement
The set of minimum legal standards for safe construction adopted by your jurisdiction (in Ohio, based on the International Residential Code). Work must meet code to pass inspection and protect resale.
Source: Wikipedia — Building Code
A skilled tradesperson who constructs, installs, and repairs structures and fixtures from wood and other materials — framing, trim, cabinetry, and finish work.
Source: U.S. BLS — Carpenters
A flexible sealant used to close gaps and joints against air and water (around trim, tubs, counters). The right caulk for the location matters — kitchen/bath joints need a mildew-resistant silicone.
Source: Wikipedia — Caulk
A rigid cement-based panel used as a stable, water-durable substrate for tile in wet areas — preferred over drywall behind tile in showers and on counters.
Source: Wikipedia — Cement Board
A traditional single round drain at the shower center requiring the floor to slope from four directions, which forces smaller mosaic tile on the floor.
Source: Wikipedia — Drain (Plumbing)
A bath faucet with handles and spout on a single base, typically 4 in. between handle centers. The compact, economical standard for smaller sinks.
Source: Wikipedia — Tap (Valve)
A document issued by the building department certifying a structure complies with code and is safe to occupy. Often required after major remodels and before a property can be legally sold.
A written, signed amendment that adds, removes, or modifies work after the contract is signed, adjusting price and schedule accordingly. Verbal changes are the leading cause of remodel disputes — get every change in writing.
Source: Wikipedia — Change Order
A vintage-style freestanding tub on raised feet. Period charm; needs exposed supply/drain plumbing and adequate floor structure.
Source: Wikipedia — Bathtub
A toilet with a higher seat (~17–19 in., chair height) that is easier to sit and stand from. Now the default choice and a key aging-in-place feature.
Source: U.S. DOJ — ADA.gov
Meeting all applicable codes, permit conditions, and regulations for the work performed. Documented compliance is what protects you at resale and with insurers.
Source: Merriam-Webster — Compliance
A mix of cement, aggregate, and water that cures into a hard structural material used for footings, slabs, and foundations. Curing time affects schedule on any structural work.
Source: Wikipedia — Concrete
A reserve (typically 10–15% of project cost) set aside for hidden conditions and surprises uncovered once work begins. The line clients most want to skip and most often need.
Source: Investopedia — Contingency
The legally binding agreement between owner and contractor that defines scope, price, schedule, and responsibilities. A remodel should never start on a handshake — the contract is your primary protection.
Source: Cornell Law LII — Contract
The full set of papers that together form the agreement — the signed contract, drawings, specifications, scope of work, allowances, and any addenda. All of it governs the job, not just the signature page.
Source: Wikipedia — Contract
The person the contractor names as its single point of contact for the owner for the life of the job. At iSpec that is the project manager who takes the first call: the liaison between the owner, the designer and the crew, with a skilled-trades lead running the site day to day and reporting to them.
Source: AIA — A201 General Conditions of the Contract for Construction
Zonda's annual study comparing remodel cost to resale return. A midrange bath remodel consistently returns a strong share of its cost, and an added bath also adds value.
Source: Zonda — Cost vs. Value Report
Two contract structures: fixed-price (lump sum, contractor bears overrun risk) versus cost-plus (owner pays actual costs plus a fee, owner bears overrun risk). Each shifts risk and pricing transparency differently.
A shallow accessible void below the floor (instead of a basement or slab) housing structure, plumbing, and ducts. Its condition affects access cost and moisture risk on remodels.
Source: Wikipedia — Crawl Space
A molded composite of stone particles and resin, often a one-piece vanity top with integrated sink. An economical, seamless, low-maintenance bath surface.
Source: Wikipedia — Cultured Marble
A bathroom with a zero-threshold (no curb) shower entry for roll-in accessibility and a modern look. Requires recessing or sloping the floor structure to drain.
Source: U.S. DOJ — ADA.gov
Light fixtures rated for bath moisture exposure — 'damp' for general bath areas, 'wet' for inside showers/over tubs. Using the correct rating is a code requirement.
Source: Wikipedia — Light Fixture
The roll-off container for construction waste. Placement, permits for street placement, and haul-away are real line items and logistics on any sizeable remodel.
Source: Wikipedia — Roll-Off (Dumpster)
The controlled removal of existing finishes and structure to prepare for new work. A clean, properly contained demo is where most hidden conditions (rot, old wiring, mold) are first uncovered.
Source: Wikipedia — Demolition
A delivery method where one entity handles both design and construction under a single contract, giving the owner one point of responsibility and tighter cost/design feedback.
Source: Wikipedia — Design–Build
The control that routes water between outlets — tub spout to showerhead, or among showerhead, hand shower, and body sprays.
Source: Wikipedia — Tap (Valve)
A vanity with two sinks, typically 60 in.+ wide, for shared primary baths. Needs adequate wall length and two sets of supply/drain rough-ins.
Source: Wikipedia — Bathroom Cabinet
The agreed timeline of payments tied to completed project milestones rather than calendar dates. A fair draw schedule keeps payments slightly behind the work completed, never ahead of it.
Source: Investopedia — Construction Loan
The coordinated package of plans — floor plans, elevations, sections, and details — that defines the design and governs construction and permitting.
A tub shell set into a finished deck or surround. Offers design flexibility but the deck adds footprint and cost.
Source: Wikipedia — Bathtub
Gypsum panel wall and ceiling material (also called sheetrock) that is hung, taped, mudded, and finished. Any wall opened during a remodel needs drywall repair and finish.
Source: Wikipedia — Drywall
A toilet with two flush volumes (liquid/solid) to save water. Often WaterSense-labeled; reduces water use versus single-flush models.
Source: U.S. EPA WaterSense — Toilets
Temporary barriers, zip walls, and negative-air setups that keep demolition and sanding dust out of occupied areas. Standard practice for live-in remodels and required where lead is present.
A recorded legal right for someone else (often a utility) to use part of your land. Building over an easement can force removal at your expense — check the survey before adding structures.
Source: Cornell Law LII — Easement
A code-required path of exit from a space in an emergency. Bedrooms and finished basements require a compliant egress window or door of minimum size and reachable height.
Source: Wikipedia — Egress Window
A licensed tradesperson who installs and maintains wiring, panels, circuits, and devices to code. Remodels that add circuits or move panels require a licensed electrician and inspection.
Source: U.S. BLS — Electricians
A flat, straight-on drawing of one face of a structure or wall (e.g., a kitchen wall elevation) showing heights and vertical relationships that a plan view cannot.
Toilet bowl shapes: elongated (oval, more comfortable, needs more clearance) versus round-front (compact, fits tight spaces). A clearance-driven choice.
Source: Wikipedia — Flush Toilet
A stain-proof, waterproof grout that resists the discoloration cement grout suffers in wet areas. Costlier and harder to install but the premium choice for showers.
Source: Wikipedia — Grout
The decorative trim plate covering the wall or deck penetration around a valve, faucet, or pipe — the visible cap over the rough plumbing.
Source: Wikipedia — Tap (Valve)
Earth removal for foundations, footings, or utilities. Regulated for cave-in safety and requires utility locating before digging.
Sizing the exhaust fan to the room — a common rule is 1 CFM per square foot, more for large baths or enclosed tub/shower areas. Undersized fans fail to clear moisture.
Source: ENERGY STAR — Ventilation Fans
A combined exhaust fan and ceiling light (sometimes with heater or Bluetooth). A common space-saving fixture; the fan still must be ducted outside.
Source: ENERGY STAR — Ventilation Fans
The number and spacing of holes drilled in the sink or top (single, centerset 4 in., widespread 8 in.). Must match the chosen faucet — decided before the top is fabricated.
Source: Wikipedia — Sink
The tank components that refill after a flush (fill valve) and release water to the bowl (flapper). The usual culprits in a running toilet.
A table in the drawings specifying the exact finish for every surface in every room — flooring, wall, ceiling, trim — so selections are documented, not assumed.
The required spacing between and around fixtures (e.g., centerline-to-wall at a toilet, space in front of a vanity). Code minimums exist; NKBA recommends more generous figures.
Source: NKBA — Bath Planning Guidelines
Thin water-resistant material installed at joints and transitions (roof-to-wall, around windows and penetrations) to direct water away and prevent leaks into the assembly.
A vanity mounted to the wall with open floor beneath. A contemporary look that eases floor cleaning but requires solid in-wall blocking to carry the load.
Source: Wikipedia — Bathroom Cabinet
A scaled overhead view of a level showing walls, rooms, openings, and fixture locations. The primary drawing for understanding layout and flow.
Source: Wikipedia — Floor Plan
The widened concrete base below a foundation wall or post that spreads the structure's load over enough soil to prevent settling. New structural posts require their own footings.
The lead worker who directs a specific crew or trade on site, working alongside the team while ensuring the work meets plan and schedule.
Source: Wikipedia — Construction Foreman
The structure (slab, crawl space, or basement) that transfers the building's load to the ground. Foundation condition underlies the feasibility and cost of major remodels.
Enclosures with full or partial metal framing around thinner glass. More economical than frameless; the framing collects grime over time.
Source: Wikipedia — Shower
A thick tempered-glass door/panel with minimal hardware. The premium modern enclosure; requires precise opening tolerances and solid anchoring.
Source: Wikipedia — Shower
The skeleton of wood or steel members — studs, joists, rafters, beams — that gives a structure its shape and carries its loads before finishes go on.
A standalone sculptural tub not attached to walls, a focal point of high-end baths. Requires floor-space, structural floor capacity (full tubs are heavy), and often floor-mounted filler plumbing.
Source: Wikipedia — Bathtub
A bathroom with all four fixtures — toilet, sink, bathtub, and shower (or a tub-shower). The configuration that defines a 'full' bath for appraisal and listing purposes.
Source: Wikipedia — Bathroom
Thin strips fastened to a wall or ceiling to create a level, plumb nailing surface or an air gap before finish material is applied — common over masonry or uneven framing.
Source: Wikipedia — Furring
The party responsible for the overall project — scheduling, hiring and managing subcontractors, pulling permits, and delivering the finished job. Your single point of accountability.
Source: Wikipedia — General Contractor
A wall-mounted safety bar anchored into blocking for support near the toilet and in the shower/tub. Even where not required, in-wall blocking should be added during any bath remodel.
Source: U.S. DOJ — ADA.gov
Shaping the ground around a structure so water drains away from the foundation. Poor grading is a leading cause of basement and crawl-space water problems.
Source: Wikipedia — Grading (Earthworks)
The material that fills and seals joints between tiles. Sanded, unsanded, and epoxy grouts differ in durability and stain resistance — epoxy is the premium choice in wet, high-use areas.
Source: Wikipedia — Grout
A bathroom with only a toilet and sink, no bathing fixture. Adds resale value and is the smallest, lowest-cost bathroom to add.
Source: Wikipedia — Bathroom
A showerhead on a flexible hose, often on a slide bar. Valuable for cleaning, bathing children/pets, and seated/accessible bathing.
Source: Wikipedia — Shower
The tangible construction costs — labor, materials, equipment — as opposed to soft costs like design fees, permits, and financing. Hard costs are the bulk of a remodel budget.
Source: Investopedia — Hard Cost
A condition or activity with potential to cause harm — electrical, structural, dust, fall, or material (lead, asbestos). Identifying hazards before demo drives containment and cost.
A horizontal structural member spanning the top of an opening (door, window, cased opening) that transfers the load above around the opening to the supports on each side.
Source: Wikipedia — Lintel (Header)
Electric mats or hydronic tubing under the tile that warm the floor. A popular bath upgrade installed during the floor build; electric mats need a dedicated circuit and thermostat.
Source: Wikipedia — Underfloor Heating
An exhaust fan that switches on automatically when it detects moisture and runs until the air clears — protects the room when occupants forget the switch.
Source: ENERGY STAR — Ventilation Fans
A code official's review of work at defined stages (rough-in, framing, final) to verify compliance before the next phase can proceed. Failed inspections stop the job until corrected.
Source: Wikipedia — Building Inspection
Material that resists heat flow, rated by R-value, installed in walls, ceilings, and floors. Opened walls are the opportunity to upgrade insulation while it is accessible.
Source: U.S. DOE — Insulation
A vanity top and sink molded as a single seamless piece (solid surface or cultured marble). Easy to clean with no rim or seam, common in mid-tier baths.
Source: Wikipedia — Sink
A bathroom shared between two bedrooms with a door from each. Saves space and cost versus two baths but requires careful fixture-zone planning for simultaneous use.
Source: Wikipedia — Bathroom
One of the repetitive horizontal members that support a floor or ceiling, spanning between beams or walls. Joist size, spacing, and direction govern what you can cut or load.
Source: Wikipedia — Joist
A short wall, typically under a sloped roof or supporting a counter or railing, that is less than full ceiling height.
Source: Wikipedia — Knee Wall
Tile with any side over ~15 in. Fewer grout lines for a clean look, but demands a very flat substrate and works best with a linear/single-slope drain.
Source: Wikipedia — Tile
A full bath remodel that keeps the toilet, tub/shower, and sink in their existing locations. Far cheaper than relocating fixtures because drain/vent work drops sharply.
Source: Wikipedia — Renovation
A legal claim against your property for unpaid work or materials. A mechanic's lien filed by an unpaid subcontractor can cloud your title even if you already paid the general contractor.
Source: Cornell Law LII — Lien
A signed document in which a contractor or supplier gives up the right to file a lien for a given payment. Collect lien waivers with each payment to protect against double-payment claims.
Source: Investopedia — Lien Waiver
A long trough drain placed at a wall, allowing a single-direction floor slope and large-format tile. Enables curbless designs; costs more than a center drain.
Source: Wikipedia — Drain (Plumbing)
Tall storage for towels and supplies, built-in or a small closet. High on bath wish lists; fitting one in is often a layout constraint.
Source: Wikipedia — Closet
Paint-on or trowel-applied membranes (e.g., RedGard, Kerdi-type systems) that waterproof shower substrates before tile. The modern alternative to traditional pan liners.
Source: Wikipedia — Waterproofing
A pre-agreed dollar amount the contractor owes the owner for each day a project runs past the contracted completion date. Must be a reasonable estimate of actual loss, not a penalty.
A wall that carries weight from the structure above down to the foundation. Removing or opening one requires an engineered beam and posts — never assume a wall is non-bearing.
Source: Wikipedia — Load-Bearing Wall
A shallow mirrored cabinet, surface-mounted or recessed into the wall between studs, for small-item storage at the sink.
Source: Wikipedia — Bathroom Cabinet
Shop-made wood products installed as finish carpentry — trim, casing, baseboard, crown, built-ins, stair parts, doors and cabinetry. Distinct from rough framing lumber; the quality of the millwork is what the eye reads as a finished room.
Source: Wikipedia — Millwork
A cement-based paste used to bond masonry or, as thinset, to adhere tile to a substrate. Different mixes are rated for different applications and exposures.
Source: Wikipedia — Mortar (Masonry)
A sloped cement base packed by hand to form a custom tiled shower floor or to set tile on a solid bed. The traditional method beneath custom tile work.
Source: Wikipedia — Mortar (Masonry)
Small tiles mesh-mounted in sheets, used on shower floors (more grout lines aid slope and slip resistance) and as accents.
Source: Wikipedia — Mosaic
Building a structure from the ground up on an empty or cleared site, as opposed to remodeling or adding onto an existing one. Site work, foundation, framing and every trade follow in sequence, so the big design decisions are made before a shovel hits the ground.
Source: Wikipedia — Construction
The detailed tile and waterproofing work to finish a recessed shower shelf — small cuts, a sloped sill, and a continuous membrane to keep the wall cavity dry.
Source: Wikipedia — Tile
The minimum unobstructed floor area NKBA guidelines specify in front of each fixture so it can be used safely and comfortably.
Source: NKBA — Bath Planning Guidelines
An acrylic tub/shower liner and wall-surround system installed over existing fixtures in about a day. Low disruption and cost but cosmetic only — it doesn't address what's behind the walls.
Source: Wikipedia — Bathtub
One-piece toilets fuse tank and bowl (sleek, easy to clean, costlier); two-piece bolt a separate tank on (economical, the traditional standard).
Source: Wikipedia — Flush Toilet
Oriented strand board — an engineered panel of compressed wood strands and resin, commonly used for sheathing and subfloor. Cheaper than plywood but less moisture-tolerant.
The Occupational Safety and Health Administration — the federal agency setting and enforcing job-site safety standards. A contractor's safety record is a meaningful screening signal.
Source: U.S. OSHA — Occupational Safety & Health Administration
The person the owner names to make decisions and answer questions on the owner's behalf — the homeowner, one spouse, an investor's local agent or a hired consultant. Naming one at the pre-construction conference keeps decisions and change orders running between two people, so nothing is decided twice or by the wrong person.
Source: WBDG — Project Delivery Teams
A non-load-bearing interior wall that divides space but carries no structural load above it. Generally simpler and cheaper to move than a bearing wall.
Source: Wikipedia — Partition Wall
Small round mosaic tile, a classic vintage bath floor that conforms well to slopes and offers good underfoot grip.
Source: Wikipedia — Mosaic (Penny Tile)
Official jurisdiction authorization to perform regulated work, triggering required inspections. Unpermitted remodels can force teardown, block sale, and void insurance — always confirm permits are pulled.
Source: Wikipedia — Building Permit
A licensed tradesperson who installs and repairs water supply, drain-waste-vent, and gas piping to code. Relocating fixtures or running new lines is licensed, inspected work.
Moving the toilet, tub, or shower drain to a new location — the largest cost lever in a bath remodel because moving a drain means opening the floor and re-venting.
Source: Wikipedia — Plumbing
An engineered panel of thin wood veneers glued in cross-grain layers for strength and stability. Preferred over OSB for cabinet boxes and where moisture exposure is a concern.
Source: Wikipedia — Plywood
The sink stopper mechanism operated by a lift rod, or a press-to-seal design. The common bath lavatory drain assembly.
Source: Wikipedia — Sink
A shower valve that holds temperature steady when water is drawn elsewhere, preventing scald/cold shocks. The common code-compliant anti-scald valve type.
The bathroom attached to the primary bedroom, typically the largest and most-renovated bath and the highest-ROI bath project for resale.
Source: Wikipedia — Bathroom
A preparatory coating that seals the surface and helps the finish coat adhere and cover evenly. Skipping primer over new drywall or stains causes finish failures.
Source: Wikipedia — Primer (Paint)
An invoice issued while a project is under way for the work completed in that period, as opposed to a single bill at the end. Progress invoicing is typically weekly on a remodel; on larger or lender-financed jobs the contract may set a milestone draw schedule instead.
Source: FAR 52.232-5 — Payments Under Fixed-Price Construction Contracts
The person who plans, coordinates, and oversees the project day to day — schedule, budget, subs, and communication with the owner. On smaller jobs the GC and PM may be the same person.
The final list of incomplete or deficient items the contractor must correct before the job is considered done and final payment is released. Walk the project and build this list together.
Source: Wikipedia — Punch List
A large overhead head delivering a soft vertical rainfall spray. Often ceiling-mounted, which adds in-ceiling plumbing; flow rate is capped by WaterSense/code.
Changing the structure, layout or function of an existing space — moving walls, relocating a kitchen, adding a bath — rather than simply refreshing finishes. More involved than a cosmetic renovation because it usually touches framing, plumbing and electrical behind the walls.
Source: Wikipedia — Renovation
A percentage of each payment (often 5–10%) the owner withholds until the project is satisfactorily completed, providing leverage to ensure the job is finished and punch-listed.
Source: Investopedia — Retainage
A formal written question from the builder to the designer or owner to clarify drawings or specs before proceeding. RFIs create a paper trail that prevents costly assumptions.
The framed gap left in a wall to receive a window, door, or unit, sized slightly larger than the product to allow shimming and squaring during installation.
The stage where plumbing, electrical, and HVAC lines are run inside open walls and floors before insulation and drywall. Rough-in must pass inspection before walls are closed.
A temporary elevated work platform system. Proper scaffolding is a regulated safety item on multi-story exterior and high-ceiling interior work.
Source: U.S. OSHA — Scaffolding
The detailed written description of exactly what the contractor will and will not do on the project. The single most important document for preventing misunderstandings and 'I thought that was included' arguments.
A material applied to a surface or joint to block the passage of water, air, or stains. Stone counters, grout, and exterior penetrations are commonly sealed.
Source: Wikipedia — Sealant
A drawing showing the structure as if sliced vertically, revealing how floors, walls, and roof assemble and stack — used to communicate construction detail.
Work a general contractor does with its own crew rather than through a subcontractor — on a kitchen or bath, typically demolition, framing, drywall, tile, cabinets, trim and fixture swaps. A self-performing contractor keeps small projects affordable because each trade is not carrying a separate subcontractor's overhead; licensed plumbing, electrical and HVAC are still subcontracted when the layout or mechanicals change.
Source: FAR 52.236-1 — Performance of Work by the Contractor
The minimum required distance between a structure and the property line, street, or other features. Setbacks constrain where additions, decks, and detached structures can be placed.
Source: Wikipedia — Setback (Land Use)
The structural panel layer (plywood or OSB) attached to studs or rafters that braces the frame and provides a base for siding, roofing, or finishes.
Source: Wikipedia — Sheathing
A built-in or fold-down seat for comfort and accessibility. Built-in benches must be sloped and fully waterproofed like the rest of the shower.
Source: U.S. DOJ — ADA.gov
The raised threshold that contains shower water. Eliminating it (curbless) requires recessing the floor structure for the slope-to-drain.
Source: Wikipedia — Shower
The overall glass-and-door system that contains the shower, from prefab kits to custom glass. Custom glass is templated after tile and is a notable line item.
Source: Wikipedia — Shower
A recessed waterproofed shelf set between wall studs for toiletries. Must be flashed and waterproofed into the wall system or it becomes a leak path.
Source: Wikipedia — Shower
The waterproof sloped floor of the shower — a prefabricated acrylic/solid-surface base or a custom tiled mortar-bed pan. The single most leak-critical component.
Source: Wikipedia — Shower
A waterproof membrane under a tiled mortar bed that catches water passing through grout and routes it to the weep holes of the drain. Hidden, essential, and code-inspected.
A coordinated set of outlets — showerhead, hand shower, body sprays, sometimes a tub filler — run from one valve set. More outlets mean a larger valve and more rough-in.
Source: Wikipedia — Shower
The in-wall mixing valve controlling shower water temperature and flow. Modern code requires anti-scald protection; the valve body is set during rough-in.
Source: Wikipedia — Tap (Valve)
A one-piece faucet using a single deck hole. Clean and modern; pairs with vessel and minimalist sinks.
Source: Wikipedia — Tap (Valve)
A floor toilet with a smooth concealed trapway (no bowl contours), far easier to clean. A common mid-tier upgrade.
Source: Wikipedia — Flush Toilet
A poured concrete floor or foundation surface. Moving plumbing in a slab-on-grade home means saw-cutting and patching concrete — a significant cost driver.
Source: Wikipedia — Concrete Slab
The required pitch of a shower floor (about 1/4 in. per foot) toward the drain so water doesn't pond. The functional core of shower-floor construction.
Source: Wikipedia — Shower
A deeper tub designed for full-body immersion. May require a larger water heater and confirmation the floor can carry the filled weight.
Source: Wikipedia — Bathtub
A sealed, fully waterproofed enclosure with a steam generator. A luxury feature requiring a vapor-tight ceiling, sloped bench, and dedicated equipment and circuit.
Source: Wikipedia — Steam Shower
An official order halting construction, usually for working without a permit or a code/safety violation. Work cannot resume until the issue is resolved and the order is lifted.
Source: Wikipedia — Building Inspection
A vertical framing member in a wall (typically 2x4 or 2x6) spaced 16 or 24 inches on center, forming the structure to which sheathing and drywall attach.
Source: Wikipedia — Wall Stud
A specialized trade (electrician, plumber, tile setter) hired by the general contractor to perform a portion of the work. You contract with the GC, not the subs.
Source: Wikipedia — Subcontractor
The structural sheet material (plywood or OSB) fastened over floor joists that everything else — underlayment and finish flooring — is built on. Squeaks and unevenness usually start here.
Source: Wikipedia — Subfloor
Product data, samples, or shop drawings the contractor submits for approval before ordering or installing, confirming what will actually be used matches the specification.
Rectangular (classically 3x6 in.) wall tile, a durable and economical bath staple that suits many styles depending on layout and grout color.
Source: Wikipedia — Tile
The on-site supervisor who runs the field operation — directing crews, sequencing trades, and enforcing safety and quality at the job site.
The process of measuring quantities of materials and labor from the drawings to build an estimate. Accurate takeoffs are the foundation of an accurate bid.
Source: Wikipedia — Cost Estimate
A premium shower valve that maintains a precise set temperature and allows independent volume control, supporting multiple shower outlets at once.
A bathroom with toilet, sink, and a shower but no bathtub. Common in basements and secondary baths; counts differently than a full bath in listings.
Source: Wikipedia — Bathroom
Metal or PVC profiles (e.g., Schluter) that finish exposed tile edges in place of bullnose tile, giving a clean modern transition and protecting edges.
Source: Wikipedia — Tile
A billing arrangement where the customer pays the crew's actual hours at a stated hourly rate plus the materials and equipment used, invoiced as the work is completed rather than as a fixed price. iSpec bills its own crew's work this way, with nothing added on top of the hourly rate; subcontracted trades are billed cost-plus.
The bathroom's sanitary fixture; 'water closet' (WC) also refers to a small enclosed toilet compartment within a larger bath for privacy.
Source: Wikipedia — Flush Toilet
The pipe fitting that secures the toilet to the floor and connects it to the drain. Damaged or wrong-height flanges are a common hidden condition found during a remodel.
Source: Wikipedia — Closet Flange
The distance from the finished wall to the toilet drain centerline — almost always 12 in., sometimes 10 or 14. Determines which toilets will fit without moving the drain.
Source: Wikipedia — Flush Toilet
A heated rack (electric or hydronic) that warms and dries towels. Hardwired electric models need a dedicated GFCI-protected circuit placed during rough-in.
Source: Wikipedia — Heated Towel Rail
The faucet that fills the tub — wall-mounted, deck-mounted, or floor-mounted. Floor-mounted fillers for freestanding tubs add significant rough-in plumbing.
Source: Wikipedia — Tap (Valve)
The waterproof wall finish around a tub — tile over backer, or solid acrylic/solid-surface panels. Panel surrounds install fast; tile is custom and costlier.
Source: Wikipedia — Bathtub
Removing a tub to install a larger walk-in shower. One of the most-requested bath remodels, driven by aging-in-place and the decline of tub use in secondary baths.
Source: Wikipedia — Shower
A layer (e.g., Ditra-type) between substrate and tile that absorbs movement so the subfloor can shift without cracking tile or grout. Standard under tile over wood subfloors.
Source: Wikipedia — Tile
A tub mounted beneath a finished deck so the deck material laps the rim, similar to an undermount sink. A clean, premium deck-tub look.
Source: Wikipedia — Bathtub
Designing the bathroom to be usable by people of all ages and abilities without specialized adaptation — wider doors, curbless showers, comfort-height fixtures, reinforced walls.
Source: Wikipedia — Universal Design
Reviewing the design to find lower-cost ways to achieve the same function and quality — substituting materials or methods to bring a project back within budget without gutting its goals.
Source: Wikipedia — Value Engineering
The bathroom cabinet that houses the sink and provides storage and counter space. The bath equivalent of the kitchen's base-cabinet run and a primary style driver.
Source: Wikipedia — Bathroom Cabinet
The bath counter surface. Smaller than a kitchen run, so premium stone is more attainable; moisture and cosmetic-product resistance matter more than heat.
Source: Wikipedia — Countertop
Task lighting at the mirror. Best placed at both sides at face height to eliminate shadows; a single overhead fixture alone is the most common lighting mistake.
Source: Wikipedia — Light Fixture
Positioning light at the mirror to eliminate face shadows — ideally sconces at both sides at ~66 in., not solely an overhead fixture. A design-and-electrical rough-in decision.
Source: NKBA — Bath Planning Guidelines
The countertop on the vanity, often with an integrated or undermount sink. Common materials are quartz, cultured marble, and solid surface.
Source: Wikipedia — Countertop
A material that limits moisture diffusion through an assembly to control condensation. Correct placement is climate-dependent — wrong-side vapor barriers trap moisture and cause rot.
Source: Wikipedia — Vapor Barrier
Official permission to deviate from a zoning requirement (e.g., to build closer to a property line than the setback allows). Requires application and usually a hearing.
Source: Cornell Law LII — Variance
A thin layer of a finish material bonded to a cheaper substrate — wood veneer on cabinet panels, stone or brick veneer on walls — delivering the look without the solid-material cost.
Source: Wikipedia — Wood Veneer
A tall faucet sized to reach over the rim of a vessel (above-counter) sink. Height is matched to the specific basin to avoid splashing.
Source: Wikipedia — Tap (Valve)
Gases emitted by some paints, finishes, and adhesives that affect indoor air quality. Low- and zero-VOC products are widely available and recommended for occupied remodels.
A high-wall tub with a watertight door for step-in entry and seated bathing, an accessibility fixture. Long fill/drain times and cost are the trade-offs.
Source: Wikipedia — Bathtub
A toilet mounted to an in-wall carrier with a concealed tank, floating off the floor. A premium space-saving look that requires opening the wall and a carrier system.
Source: Wikipedia — Flush Toilet
A faucet mounted in the wall above the sink rather than the deck. A design statement that must be plumbed in the wall during rough-in and set to the basin geometry.
Source: Wikipedia — Tap (Valve)
A continuous barrier (sheet or liquid-applied) over shower walls and floor that keeps water out of the structure. The make-or-break of a leak-free tiled shower.
Source: Wikipedia — Waterproofing
The wax seal between the toilet base and flange that prevents sewer gas and leaks. Replaced every time a toilet is reset; failure causes subfloor rot.
Source: Wikipedia — Flush Toilet
A fully waterproofed bathroom where the shower is open to the room with no enclosure, the entire floor sloped to a drain. A design-forward, fully tanked build.
Source: Wikipedia — Wet Room
The wall built to house the bath's supply and drain-waste-vent plumbing. Keeping fixtures on the existing wet wall avoids costly new drain and vent runs.
A tub with water jets driven by a pump. Requires a dedicated GFCI circuit and access panel; declining in popularity versus air tubs and soaking tubs.
Source: Wikipedia — Whirlpool/Jetted Tub
A faucet with separate handles and spout mounted independently 8–16 in. apart. A higher-end look that requires a three-hole sink/top.
Source: Wikipedia — Tap (Valve)
A house stuck between owners: the occupant left — often after a foreclosure filing — but the foreclosure stalled or the taxes went unpaid, so nobody maintained it. In Columbus they reach the market through sheriff's auctions, the Franklin County land bank and as-is sales, usually without an inspection before purchase. The rehab is a whole-home gut remodel with every system assumed dead until proven otherwise.
Source: Central Ohio Community Improvement Corporation (Franklin County Land Bank) — About
Local laws governing how land may be used and what can be built where, including size, height, and setback limits. Additions and footprint changes often require zoning review.
Source: Cornell Law LII — Zoning
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