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Home Modification Basics


"Home improvement for independent living"


Most people prefer staying in their own home as they grow older instead of moving. Unfortunately, most of today’s homes do not meet the changing needs of families over their lifetime. Houses that are inconvenient, unsafe or high maintenance force many people to move prematurely.

Home modification anticipates these needs and applies what we know about the human aging process to home building. Modifications at all stages of home building, remodeling and repair can make Aging In Place possible. The term Universal Design is also used to describe home design that is compatible with a wide range of human abilities.


There are many interpretations of a universal designed or modified home. Generally they contain these basic elements:
— No steps, easily accessible, wide routes into and within the dwelling
— Floor plans with the potential for ground floor living
— Lighting enhancements for vision and safety
— Wall reinforcements for future grab bars and handrails
— Bathrooms and kitchens with open floor space usually five feet in diameter
— Easy to use electrical, plumbing and climate controls that can be reached from both standing and seated positions


At the bottom of each page of this website there are links that provide more information about Home Modifications, Universal Design and Aging In Place. They are great starting points to learn more.


Home Modification Highlight: Walk-in bathtubs


Walk-in bathtubs have been available in America for a couple of decades, but vendors are now targeting our growing senior population.  These tubs have a door in the side that opens so bathers can walk into the tub without climbing over a tub rim, and most of them include a seat that allows bathers to sit above floor level.  They offer a home-spa experience that can be the perfect prescription for people Aging In Place with poor circulation, aching limbs and stiff muscles and joints.  They can provide a safe, relaxing bath for seniors but purchasing one requires a careful look at its operation, installation, materials, dimensions, door, seat, jets, controls, grab bars, maintenance, warranty and price.

Operation – Bathers open the hinged door in the tub wall, walk into the tub, close and seal the door, sit down on the seat and wait as the tub fills with water.  When finished, the bather must drain the tub before opening the door to walk out.   Manufacturers offer optional quick-fill faucets and second drains to reduce the time it takes to fill and drain these tubs, but bathers will still find themselves wet and waiting for two to ten minutes while the water reaches the desired level or drains out.  Heat lamps are recommended in bathrooms where bathers might get chilled as they wait for the intended water level.

Installation – Installers need plumbing, electrical and carpentry expertise.  Representatives of the company selling the tub or a general contractor will provide the best installation. The house, doorway widths and bathroom location require evaluation to be sure the tub can be maneuvered through the house into the bathroom.  An existing bathtub will need to be removed and plumbing and electrical wiring may need modification.  The bathroom floor also needs to be examined for its load-bearing capacity because it may need reinforcement, especially if it is not on a concrete slab.   A large tub filled with water and a bather can weight up to 2000 pounds, which exceeds the building code for floor loads in most communities.

Materials – Most walk-in bathtubs are made of molded resin containing glass fibers, often called “fiberglass”, and a coating of acrylic or gelcoat.  Both surface coatings can crack, scratch and chip and they require non-abrasive cleaners for maintenance.  Gelcoat is usually the more durable and expensive surface.  Other surface features, like a matte or low-gloss finish and a slip-resistant floor and seat, are also important for aging eyes and safe use.  Metal parts like jets, fasteners or door hinges and handles will resist rust best if they are made of stainless steel.

Dimensions – Walk-in tubs are available in a variety of dimensions and configurations.  Gaps between the tub and bathroom walls are usually filled in with extensions to the surrounding deck, which are an optional accessory.  Most models typically fit in the same space as a bathtub, 60 by 30 to 36 inches.  Large models 60 by 42 inches add a touch of luxury to larger bathrooms.  Tub depths from the floor can range from 19 to 47 inches, but the distance from the seat to the manufacturer’s recommended maximum water level is most important for comfortable soaking and it usually requires buyers to do the math.  Subtracting the seat height from the maximum water level, which is not the same as the tub depth or top of the rim, determines the depth of water available to cover a bather’s torso.  This distance between the water level and the seat typically ranges around 13 to 17 inches, which is insufficient to completely submerge a bather’s upper body. 

Door – The door in the side of a walk-in bathtub has several features that govern how well the tub functions.  Door swing options usually include out swinging or in swinging and left handed or right handed.  Doors that swing outside of the tub require clearance space in the bathroom, but they are preferable to inward sweeping doors that obstruct access to the seat and cannot be opened against the weight of the water in an emergency.  Whether the door opens to the left or right is determined by personal preferences and where there is adequate space for the door to open.  Some models have a door almost the length of the tub that rolls down into the frame when opened and up for bathing, which provides full access to the tub interior and saves the space required by a swinging door.  Click on the link below to see an example of the Arjo Freedom Bath with a roll door.

Door dimensions and shape affect how easy it is to enter, use and exit the tub.  Bathers with mobility equipment, limited motion or an assistant usually require a wide opening.  The door opening should provide easy access to the side of the seat so less agile bathers can slide onto the seat as they enter.  Tapered doors that are wide at the top and narrower or rounded at the bottom reduce the clearances at the points for sitting and stepping in, precisely where they are needed most. 

Door thresholds on some walk-in bathtubs require bathers to lift their feet 8 inches, which is higher than most stair steps.  Others with lower thresholds still require good balance, agile legs and steady footwork to navigate.  Some retailers provide narrow, sloped ramps to aid bathers climbing up to the raised threshold.

The gaskets lining the door are the only protection against a flooded bathroom.  They should be quick, easy and inexpensive to repair or replace if they leak.  These watertight door seals have failed in some models requiring the removal or replacement of the entire tub.

Doors that are easy to open, close and secure are most convenient for people with arthritis, tremors and other conditions common to seniors.  Latches with large lever handles and minimal resistance are easiest to operate.

Seat – The distance between the seat height and the manufacturer’s recommended maximum water level, not the rim, determines the depth of the water available for upper body soaking.  Seat backrests 18-inches high that recline no more than 5 degrees provide a good combination of comfort and back support.  Level or gently sloping seats help bathers with weak leg muscles to sit and stand up.  Seats are easiest on older knees and hips if they are knee high or approximately 16 to 20 inches from the floor.  For comfort and security, the seat should be between 15 and 20 inches deep.  Folding seats that drop down inside the tub provide more maneuvering room when they are folded up making them especially useful in tubs with doors that swing inward.  They also allow bathers to sit on the seat or tub floor when the seat is up and they increase the space available for showering.  Folding seats have space underneath the seat for bathers to firmly plant their feet for stability while sitting and standing.  Whether the seat folds down or is molded into the bathtub, it will be most convenient to sit on if the seat edge is within reach of the door opening. (See picture above) A seat color that contrasts with the rest of the tub, especially the floor, is more visible in steamy rooms, dim light or with eyeglasses removed.   

Grab bars – Expect at least one built-in diagonal bar for support while sitting down or rising from the seat.  Other locations where grab bars might be handy include the walls and deck area around the bathtub rim.  Most of the “hand holds” or “grab rails” provided by walk-in bathtub manufacturers do not meet the design, location and safety specifications of grab bars, so installing them to meet your own functional and aesthetic preferences is a better option.

Jets – Water agitation in walk-in bathtubs is provided by air or water jets or a combination of both.  Jets with water flow adjustments allow bathers to determine how vigorously the water moves and set the water circulation for a deep massage or a gentle soak.  Jets with individual water direction adjustments help avoid overstimulation of tender areas to ensure that the hydrotherapy experience is comfortable and soothing.  The motion of these jets causes the heat in the water to dissipate quickly so an in-line water heater that keeps the temperature constant is an accessory worth considering.  Consistent water temperature is especially important for ill, injured and elderly bathers who may have difficulty regulating their body heat and those with compromised skin sensitivity.

Controls – Jet controls are easiest to use if they are uncomplicated to operate and have highly visible, large contrasting numbers and settings.  Controls for jets, faucets, diverter valves and drains should be located where they do not interfere with access to the door or bathing activities.  They also need to be within reach of seated bathers and from outside of the tub.  Faucets controlled by a single lever are easier for people with reduced gripping strength or limited finger dexterity to use than separate rotating controls for hot and cold water.  If separate rotating controls are the only available option, look for long blade handles, which take less effort to grasp and twist.  Pressure-balanced and thermostatically controlled fill valves prevent fluctuations in water flow and temperature that could shock, injure or scald bathers.  Recessed or low profile controls, faucets and retractable showerheads are less likely to stick out and snag clothing or contact body parts.

Maintenance – Walk-in bathtubs require more maintenance than non-jetted bathtubs and about the same as other jetted or whirlpool baths.  A removable panel on the side of most tubs allows access for servicing mechanical parts, which are usually located under the seat.  The panel should be easy to remove and located within reach without bending and stooping.  Pipes can harbor bacteria and pathogens that accumulate from standing water, soaps and oils that remains in the pipes when the tub is not in use.  Some manufacturers recommend using a diluted bleach solution to remove bacteria growth in the pipes, others have developed pipeless bathtubs.  Manufacturers may also recommend cleaning tub surfaces with plain water and applying a paste wax to keep them clean.

Warranty – Most walk-in bathtubs have one or more warranties. Some are for a lifetime to the original owner.  Others are for a specific time length with extended warranties available for purchase.  Many companies advertising walk-in tubs for seniors are not the manufacturer, so it is important to determine the source, length and coverage of the warranty.  Statements like, “We provide a lifetime warranty to the original owner.  Parts warranted by others.” raise questions about the manufacturer and warranty on each component.  Bathtubs manufactured outside of North America must be retrofitted to meet U.S. manufacturing standards and plumbing and electrical codes.  Finding replacement parts for these tubs could be difficult.  Many of the companies advertising walk-in bathtubs today are new businesses or they lack a long-term history in America.  Lifetime warranties are useless if the company is not around when your tub needs attention.  Look for familiar brand-name pluming fixture manufactures that are most likely to be in business to honor warranties and provide replacement parts when you need them.

Price – Expect to pay slightly under $5,000 up to $10,000 for a good walk-in bathtub depending upon its size and features.  Accessories like an in-line heater, extra jets, deck extensions, chromatherapy lighting, aromatherapy, ozonators and inflatable neck pillows will increase the purchase price.  Installation costs are additional and depending upon your location, installer, house structure, bathroom configuration and other variables they can add an additional $10,000 to the total.  Individuals who purchase a tub as a medical device and have a doctor’s prescription may be eligible for a medical tax deduction.

Alternatives – Curbless showers are the universal solution to a lifetime of bathing independence and safety. Households with bathtubs as a secondary bathing option might consider a tub with features similar to walk-in bathtubs, which have been used successfully for decades in hospitals and therapeutic settings.  Some of them have been adapted for residential styling and use.  Other options are soaking tubs and standard or jetted bathtubs that are elevated to a comfortable seating height and installed with a wide seating platform so bathers can sit on the edge of the tub, rotate their legs into the tub and sit on either a seat or the tub floor.  Bathtubs with built-in seat lifts and those that work with portable lifts are other alternatives.

Walk-in bathtub advertising depicts a soothing home spa experience providing relief from aging joints, back pain and arthritis.  The walk-in door and raised seat make them especially attractive to safety-seeking seniors.  Only a few of the models approach the accessibility levels necessary for bathers who use mobility devices like walkers, wheelchairs or scooters.  Ultimate satisfaction with walk-in bathtubs depends upon an informed consumer personally testing and inspecting different models in a showroom and having confidence in the manufacturers, installers and service representatives of these bathtubs.


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Click here to watch a short video showing the Arjo Freedom bathtub with the roll door
 
 
Lifespan Home Modifications strives for accuracy and integrity as we highlight industry trends and best practices. We receive no commission, compensation or advertising revenue from products or services mentioned on this website. References and links are informational and we make no guarantee for specific products or services listed on or linked from this site.

Previous Home Modification Highlights include:

* Bathtub Basics * Bathroom Brilliance * Get a Grip on Bathtub Grab Bars * Shower Showcase * Curbless Showers * Transfer Showers * Sensational Showerheads * Timeless Toilets * Toilet Grab Bar Tips * Bathroom Sink Savvy * Medicine Cabinet Remedies * Reflections on Bathroom Mirrors * Kitchens Devised for Older Eyes * Classical Countertops * Useable Upper Cabinets * Beyond Basic Base Cabinets  * Versatile Vertical Storage * Cooktop Comfort * Oven Overview * Dishwasher Decisions * Sitting Sinks * Beneficial Bedrooms * Convenient Closets * Discreet Doors * Effortless Entry Doors * Easy Entrances *  Great Garages * Practical Garage Planning * Lifetime Garage Lighting * Distinguishing Garage Doors * Optimal  Garage Organizers * Lifespan Landscaping * Deck Details * Welcoming Walkways * Golden Age Gardening * Lawns for a Lifetime  * Outlet Options *  Taking to Task Lighting * Elevator Essentials * Stair Sense * Handy Handrails * Floor Fitness * Carpet with Care * Wall Power * Wonderful Windows * Laundry Room Logic * Floor Plans * Foundation Fundamentals *

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