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BUILDING INTERIORS

ACOUSTICAL SEALANT CHOICES
AGE of a BUILDING - how to determine
AIR BYPASS LEAKS
AIR LEAK DETECTION TOOLS
AIR LEAK MINIMIZATION
AIR POLLUTANTS, COMMON INDOOR
AIR LEAK SEALING PROCEDURE
AIR SEALING STRATEGIES
ANIMAL ALLERGENS

ANTI SCALD VALVES
APPLIANCE EFFICIENCY RATINGS
ARCHITECTURE & BUILDING COMPONENT ID
ASBESTOS IDENTIFICATION IN buildings
ATTIC LEAKS, CONDENSATION & MOLD
ATTIC VENTILATION

BASEMENT CEILING VAPOR BARRIER
BASEMENT HEAT LOSS
BASEMENT LEAKS, INSPECT FOR
BASEMENT WATERPROOFING
BATH & KITCHEN DESIGN GUIDE
BATHROOM VENTILATION
BEST CONSTRUCTION PRACTICES GUIDE
BLOWER DOORS & AIR INFILTRATION
BLOWER FAN CONTINUOUS OPERATION
BLOWER FAN OPERATION & TESTING
BLOWN-IN INSULATION
BOOKSTORE
BRICK LINED WALLS
BRICK VENEER WALL INSULATION
BRICK VENEER WALL Loose, Bulged
BRICK WALL DRAINAGE WEEP HOLES
BUCKLED FOUNDATIONS due to INSULATION?
BUILDING SAFETY HAZARDS GUIDE
BUILDING NOISE DIAGNOSIS & CURE

CACTUS FUNGI / MOLD
CAR MOLD CONTAMINATION
CARPET DUST IDENTIFICATION
CARPET MOLD CONTAMINATION
CARPET TEST PROCEDURE
CABINETS & COUNTERTOPS
CARPETING & INDOOR AIR QUALITY
CARPETING, SELECTION & INSTALLATION
CASEWORK, CABINETS, SHELVING INSTALLATION
CATHEDRAL CEILING INSULATION
CATHEDRAL CEILING VENTILATION
CEILING FINISHES INTERIOR
CEILINGS, DROP or SUSPENDED PANEL
CEILINGS, PLASTER TYPES
CERAMIC TILE FLOOR, WALL
CERAMIC TILE, ASBESTOS in?
CHIMNEY INSPECTION DIAGNOSIS & REPAIR
CHINESE DRYWALL HAZARDS
CLOGGED DRAIN DIAGNOSIS & REPAIR
COMBUSTION AIR for TIGHT buildings
CONDENSATION or SWEATING PIPES, TANKS
COOLING LOAD REDUCTION by ROOF VENTS
CRAWL SPACES

DEW POINT CALCULATION for WALLS
DEW POINT TABLE - CONDENSATION POINT GUIDE
DOORS, INTERIOR
DRYWALL HAZARDS, CHINESE
DRYWALL INSTALLATION Best Practices
DRYWALL MOLD
DRYWALL MOLD RESISTANT

EARTHQUAKE DAMAGED FOUNDATIONS
EFFLORESCENCE, Salts & White / Brown Deposits
ELDERLY & VETERANS HOME SAFETY
ELECTRICAL INSPECTION, DIAGNOSIS, REPAIR
ENERGY SAVINGS in buildings
ENGINEERED WOOD Flooring
ENGINEERED WOOD Products
EXTERIOR WALL SIDING TRIM & FINISHES

FIBERGLASS INSULATION
FIBERGLASS HAZARDS
FIBERGLASS INSULATION MOLD
FLAT ROOF MOISTURE & CONDENSATION
FLOOD DAMAGE ASSESSMENT, SAFETY & CLEANUP
FLOODS IN buildings-mold
FLOOR, CERAMIC TILE
FLOOR, CONCRETE SLAB CHOICES
FLOOR, CONCRETE SLAB POURED FINISH
FLOOR DAMAGE DIAGNOSIS
FLOOR, ENGINEERED WOOD & LAMINATES
FLOOR FRAMING & SUBFLOOR for TILE
FLOOR, KITCHEN & BATH OPTIONS
FLOOR, LAMINATE PLASTIC
FLOOR RADIANT HEAT Mistakes to Avoid
FLOOR, RESILIENT VINYL or CORK
FLOOR, STONE, GRANITE, MARBLE, AGGLOMER
FLOOR & SUBFLOOR MOLD, HIDDEN
FLOOR TYPES & DEFECTS
FLOOR TILE ASBESTOS IDENTIFICATION
FLOOR TILE HISTORY & INGREDIENTS
FLOOR TILE INSTALLATION DETAILS
FLOOR WOOD AGE TYPES HISTORY
FLOOR WOOD, DAMAGE DIAGNOSIS ;
FLOOR, WOOD ENGINEERED, LAMINATE, INSTALL
FLOOR, WOOD FINISHES
FLOOR, WOOD INSTALLATION GUIDE
FLOOR, WOOD MOISTURE
FLOOR, WOOD RADIANT HEAT
FLOOR, WOOD SOLID STRIP, PLANK
FLOOR, WOOD TYPES
FLOORING MATERIALS, Age, Types
FORMALDEHYDE HAZARDS
FOUNDATION BULGE or LEAN MEASUREMENTS
FOOTING & FOUNDATION DRAINS
FOUNDATION CRACKS & DAMAGE GUIDE
FOUNDATION WATERPROOFING
FRAMING DAMAGE, INSPECTION, REPAIR
FRAMING DETAILS for BETTER INSULATION
FREEZE-PROOF A BUILDING
FROST HEAVES, FOUNDATION, SLAB
FUNGICIDAL SPRAY & SEALANT USE GUIDE

GAS DETECTION & MEASUREMENT
GAS EXPOSURE EFFECTS, TOXIC
GAS EXPOSURE LIMITS & STANDARDS
GAS TEST PROCEDURES

HEAT LOSS in buildings
HEAT LOSS DETECTION TOOLS
HEAT LOSS INDICATORS
HEAT LOSS PREVENTION PRIORITIES
HEAT LOSS R U & K VALUE CALCULATION
HEAT TAPES & CABLES on Roofs for Ice Dams
HEATING COST SAVINGS METHODS
HOT ROOF DESIGNS: Un-Vented Roof Solutions
HOT WATER HEATERS
HOUSEWRAP AIR & VAPOR BARRIERS
HOUSE DOCTOR, how-to be
HUMIDITY LEVEL TARGET

ICE DAM PREVENTION
Ice Dams: Comparing Two Houses
INDOOR AIR QUALITY & HOUSE TIGHTNESS
INDOOR AIR QUALITY IMPROVEMENT GUIDE
INSULATION CHOICES
INSULATION FACT SHEET- DOE
INSULATION for GREENHOUSE or SOLARIUM
INSULATION IDENTIFICATION GUIDE
INSULATION INSPECTION & IMPROVEMENT
INSULATION LOCATION - WHERE TO PUT IT
INSULATION MOLD
INSULATION R-Values & Properties
INTERIOR FINISHES: BEST PRACTICES
INTERIOR FINISHES: DRYWALL

KIT HOMES, Aladdin, Sears, Wards, Others
KITCHEN & BATH DESIGN GUIDE

LIGHTING, EXTERIOR GUIDE
LIGHTING, INTERIOR GUIDE
  Accent Lighting, Definition, Uses
  Accent Lights
  Ambient Lighting, Definition, Uses
  Bathroom Lighting Guidelines
  Buy Lighting Products, Where to
  Closet Lighting Fire Safety
  Color Temperature and CRI for Indoor Lights
  Color Temperature Bulb Comparisons
  Common Lighting Terms
  Compact Fluorescent Lights, Indoors
  CRI Scale Rates & Definition
  Decorative Lighting, Definition, Uses
  Direct Lights, Types
  Downlights & Uses
  Fluorescent Lights, Compact Indoors
  Fluorescent Lighting Guide, Indoors
  Fluorescent vs Standard Incandescent Bulb
  Gas Lighting Pipes & Fixtures
  GLARE, Sunlight/Lighting Control
  Halogen Lights, Indoor Uses
  Incandescent Light Bulbs Guide
  Indirect Lights & Best Uses
  Kitchen Lighting, Ambient Specifications
  Kitchen Lighting Counters, Sinks, Cooktops
  Kitchen Lighting Requirements
  Lamp & Bulb Abbreviations & Types
  Lamp & Bulb Types, Indoor
  Lighting Levels Indoors, Recommended
  Low-voltage Lighting Guide, Indoors
  Lumens, Definition, comparisons
  Luminaires, Definition, Uses
  Recessed Light Housings,Guide to
  Recessed & Track Lighting Best Uses
  Recessed & Track Light Bulb, Guide to
  Recessed Lighting Fixture Trims
  Rules of Thumb for Interior Lighting
  Spacing, Light Fixture
  Table Top Lighting Specifications
  Task Lighting, Definition , Uses
LIGHTNING PROTECTION SYSTEMS
LOW VOLTAGE BUILDING WIRING
LOG HOME GUIDE
METAL LATH, PLASTER & STUCCO
MIXING / ANTI-SCALD VALVES
MOBILE HOME INSPECTIONS
MOISTURE CONTROL in BUILDINGS
MOLD in FOAM INSULATION, RESISTANCE
MOLD INFORMATION CENTER

Nanomaterials Hazards
NOISE / SOUND DIAGNOSIS & CURE
NOISE, AIR CONDITIONER COMPRESSOR
NOISE, DUCT VIBRATION DAMPENERS
NOISE CONTROL for HEATING SYSTEMS
NOISE CONTROL for FLOORS
NOISE CONTROL for PLUMBING
NOISE CONTROL for ROOFS
NOISE, PLUMBING DRAIN DIAGNOSIS
NOISE, PLUMBING DRAIN REPAIR
NOISE, PLUMBING CHECKLIST
NOISE, WATER HEATER
NOISES, WATER PUMP

ODORS & SMELLS DIAGNOSIS & CURE

PASCAL CALCULATIONS
PAINT FALURE, DIAGNOSIS, CURE, PREVENTION
PLASTER
PLASTER & BEAVERBOARD & DRYWALL
PLASTER BULGES & PILLOWS
PLASTER LATH, METAL
PLASTER, LOOSE FALL HAZARDS
PLASTER TYPE IDENTIFICATION
PLASTER VENEER Best Practices
PLASTER VENEER Best Practices

RADIANT HEAT
RADIANT HEAT Floor Mistakes to Avoid
RADIANT HEAT TEMPERATURES
RADIANT SLAB FLOORING CHOICES
RADIANT SLAB TUBING & FLUID CHOICES
ROOF VENTILATION SPECIFICATIONS
ROT, FUNGUS, TERMITES
ROT, TIMBER FRAME

SAFETY HAZARDS & INSPECTIONS
SAFETY: Elderly & Veterans Home Safety
SAFETY for ELECTRICAL INSPECTORS
SEARS KIT HOUSES
SINKHOLES, WARNING SIGNS
SINKING BUILDINGS
SLAB CRACK EVALUATION
SOUND CONTROL in buildings
Splits in Structural Wood Beams
STAIN DIAGNOSIS on BUILDING EXTERIORS
STAIN DIAGNOSIS on BUILDING INTERIORS
STAINS & FINISHES, INTERIOR
STAIRS, RAILINGS, LANDINGS, RAMPS
STONE CLEANING METHODS
STRESS SKIN INSULATED PANELS
STUCCO WAll FAILURES DUE TO WEATHER
STUCCO WALL METHODS & INSTALLATION
STUCCO OVER FOAM INSULATION
STUCCO PAINT FAILURES
SUMP PUMPS GUIDE
SWEATING (CONDENSATION) on PIPES, TANKS

THERMAL EXPANSION of MATERIALS
THERMAL MASS in buildings
THERMAL TRACKING Indicates Heat Loss
TILE INSTALLATION DETAILS
TRIM, INTERIOR INSTALLATION
TRUSS UPLIFT, ROOF
TRUSSES, Floor & Roof

VAPOR BARRIERS & CONDENSATION in BUILDINGS
VENTILATION in buildings
VINYL Siding or PLASTIC Window ODORS in buildings
VINYL CHLORIDE HEALTH INFO

WALL SIDING TRIM & FINISHES
WALL FINISHES INTERIOR
WATER BARRIERS, EXTERIOR BUILDING
WATER ENTRY in buildings
WINDOWS & DOORS
WINTERIZE A BUILDING
WOOD Burning Heaters Fireplaces Stoves
WOOD FLOOR DAMAGE

More Information

Bathroom Lighting (C) Daniel Friedman Guide to Bathroom Lighting Locations, Levels, Types
InspectAPedia®  -      

  • Guide to Bathroor light fixtures,Bathroom Lighting Guidelines: General Lighting Rules for Bathrooms
  • Recommendations for lighting levels for bathrooms
  • Bathroom Mirror Lighting Recommendations
  • Guidelines for Lighting Over Tub and Shower
  • Questions & answers about lighting specifications for bathrooms

Bathroom lighting design specifications: this article gives guidelines for lighting location, strength, and safety for bathrooms. This article series details guidelines for selecting and installing interior lighting to meet the requirements for different building areas.

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers nor with topics or services discussed at this website.

© Copyright 2012 InspectAPedia.com, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use page top links to major topics or use links at the left of each page to navigate within topics and documents at this website. Green links show where you are in a document series or at this website.

Bathroom Lighting Guidelines

Bathroom lighting in a historic home (C) D FriedmanThis article includes excerpts or adaptations from Best Practices Guide to Residential Construction, by Steven Bliss, courtesy of Wiley & Sons.

Also see LIGHTING, INTERIOR GUIDE our home page for information about all lighting topics relating to building interiors.

Bathroom Mirror Lighting Recommendations

Good lighting is critical at the bathroom mirror for shaving, makeup, and other tasks of personal hygiene.

For optimal lighting, place strip lights or globe type light bars at least 16 inches long on each side of the mirror centered at 61 to 64 inches (about the average eye height).

Wall sconces on either side are also an option for smaller mirrors. These provide even cross lighting without shadows or glare (see Figure 5-23). Our photo (above left) illustrates lighting in a historic home in New York. The placement of a bulb suspended in front of the mirror generates plenty of glare.

Figure 5-23: (C) J Wiley, S Bliss

 

Figure 5-23

For small mirrors under 30 inches wide, use about 75 watts of incandescent lighting or 20 watts of warm-white fluorescent on each side. For larger mirrors, use up to 150 watts of incandescent or 40 watts of fluorescent on each side. Additional lights across the top of larger mirrors are also helpful.

If using fluorescents, select lamps with high CRIs and warm color temperatures in the 2700K to 3000K range.

Bathroom lighting over small mirror (C) Daniel FriedmanLighting from above the mirror only using globe-type light bars, a pair of recessed downlights, or a lighting soffit is acceptable as long as the vanity top is a light color.

Otherwise, areas under the eyes, nose, and chin will be in shadow. If recessed fixtures are used, choose an A lamp, flood, or compact fluorescent for a diffused beam.

General Lighting Rules for Bathrooms

As a rule of thumb, provide one watt of incandescent or 1/3 to 1/2 watt of fluorescent light per square foot of floor space. Increase this by 50 to 100% for recessed lights, indirect lighting, or a room with dark surfaces. In a small bathroom, the mirror lights can also provide the ambient light.

For larger baths, a separate ceiling fixture mounted near the tub and toilet can be useful for ambient light and reading.

Finally, in a room with a high ceiling, indirect lighting with coves or uplights can create a feeling of spaciousness in a bathroom, along with a pleasing, soft glow.

Guidelines for Lighting Over Tub and Shower

Shower light fixture (C) Daniel FriedmanA recessed light with a white diffuser mounted over the tub or shower will be appreciated by bathers.

Watch out: Electrical codes require that these fixtures be totally enclosed and rated for use in a damp location (tub area) or wet location (shower).

Most require GFCI protection for their UL rating. The shower light fixture installed in the bathroom shown at left is unsafe, using an improper fixture type and lacking ground fault circuit interrupt protection - a shock and fatality risk.

In addition, fixtures must be at least 6 feet above the water line and switches must be a minimum of 5 feet from the edge of the bathtub or shower.

Watch out: Check with local code officials in your own jurisdiction for specific lighting and electrical safety requirements.

-- Adapted with permission from Best Practices Guide to Residential Construction.

Indirect lighting over a Japanese tub/bathroom (C) D Friedman Steven Ostrow

Our photo (left) illustrates nice use of indirect and rooftop skylight lighting over a walk-in shower in a Minnesota home.

Industry & Trade Associations for Lighting and Other Interior Components in buildings

American Lighting Association www.americanlightingassoc.com

Association of the Wall and Ceiling Industries www.awci.org

Carpet and Rug Institute (CRI) www.carpet-rug.org

Drywall Finishing Council www.dwfc.org

Forest Stewardship Program www.fscus.org

FloorFacts www.floorfacts.com

The Gypsum Association www.gypsum.org

National Oak Flooring Manufacturers Association (NOFMA) www.nofma.com

National Wood Flooring Association www.woodfloors.org

Painting and Decorating Contractors of America www.pdca.org Smartwood/Rainforest Alliance www.smartwood.org

-- Adapted with permission from Best Practices Guide to Residential Construction.

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LIGHTING, EXTERIOR GUIDE
LIGHTING, INTERIOR GUIDE - see detailed links at page left

Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair

  • Our recommended books about building & mechanical systems design, inspection, problem diagnosis, and repair, and about indoor environment and IAQ testing, diagnosis, and cleanup are at the InspectAPedia Bookstore. Also see our Book Reviews - InspectAPedia.
  • Home Reference Book - Carson Dunlop The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 2010, $69.00 U.S., is available from Carson Dunlop, and from the InspectAPedia bookstore. The 2010 edition of the Home Reference Book is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. InspectAPedia.com ® author/editor Daniel Friedman is a contributing author. Field inspection worksheets are included at the back of the volume.
  • Best Practices Guide to Residential Construction, by Steven Bliss. John Wiley & Sons, 2006. ISBN-10: 0471648361, ISBN-13: 978-0471648369, Hardcover: 320 pages, available from Amazon.com and also Wiley.com. See our book review of this publication.
  • Recommended books on electrical inspection, electrical wiring, electrical problem diagnosis, and electrical repair can be found in the Electrical Books section of the InspectAPedia Bookstore. (courtesy of Amazon.com)
  • * Safety Hazards and Safe Inspection Procedures for Electrical and Home Inspectors at Residential Electric Panels
  • Aluminum Wiring Information Website Aluminum Electrical Wiring Hazards and Repairs: in-depth authoritative info, photos, documents including selection of proper vs. ineffective repair methods. E.g.: Ideal 65 "Twister" purple connector fails in field and lab testing with aluminum wire.
  • Ampacity of an Electrical Service: How to determine the electrical service size or ampacity entering a building
  • Circuit Breaker, a bad one fails to trip failure at aluminum bus-to-circuit breaker connection - field report and photographs
  • Electrical Panels, How to Inspect in buildings, safety for electrical inspectors, electrical panel, fusing, wiring defects, defective products. Inspection Class Presentation
  • Federal Pacific Electric (FPE) Stab-Lok Circuit Breaker Panel Hazards Website - Latent fire hazards, in-depth authoritative research, documents, advice on Stab-Lok electric panel and circuit breaker failures and what to do when this equipment is found in buildings.
  • Lightning Strike Risk Assessment, Protection Systems & Services
  • Multi-wire branch circuit inspection and defects
  • Rust and Corrosion in Electrical Panels, A Study and Report on Frequency and Cause for Electrical and Home Inspectors at Residential Electric Panels
  • "Electrical System Inspection Basics," Richard C. Wolcott, ASHI 8th Annual Education Conference, Boston 1985.
  • Safety Hazards and Safe Inspection Procedures for Electrical and Home Inspectors at Residential Electric Panels
  • "Simplified Electrical Wiring," Sears, Roebuck and Co., 15705 (F5428) Rev. 4-77 1977 [Lots of sketches of older-type service panels.]
  • "How to plan and install electric wiring for homes, farms, garages, shops," Montgomery Ward Co., 83-850.
  • "Electrical System Inspection Basics," Richard C. Wolcott, ASHI 8th Annual Education Conference, Boston 1985.
  • "Simplified Electrical Wiring," Sears, Roebuck and Co., 15705 (F5428) Rev. 4-77 1977 [Lots of sketches of older-type service panels.]
  • "How to plan and install electric wiring for homes, farms, garages, shops," Montgomery Ward Co., 83-850.
  • "Home Wiring Inspection," Roswell W. Ard, Rodale's New Shelter, July/August, 1985 p. 35-40.
  • "Evaluating Wiring in Older Minnesota Homes," Agricultural Extension Service, University of Minnesota, St. Paul, Minnesota 55108.
  • "Electrical Systems," A Training Manual for Home Inspectors, Alfred L. Alk, American Society of Home Inspectors (ASHI), 1987, available from ASHI. [DF NOTE: I do NOT recommend this obsolete publication, though it was cited in the original Journal article as it contains unsafe inaccuracies]
  • "Basic Housing Inspection," US DHEW, S352.75 U48, p.144, out of print, but is available in most state libraries.
  • Electrical System & Wiring Hazard Inspection, Detection, Cause, Remedy, Prevention - Main Electrical Page
  • ...

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