How To Install An Attic Bathroom

How To Install An Attic Bathroom?

There is a good idea where many families to install the attic bathroom in a smart way. An attic bathroom will allow the tricky space if it is large or small.

Giving you also something special and unique shape where there is no possibility to face difficulties the establishment of attic bathroom.

There are a large number of people enlarging their families or merely interested in additional space occasionally look to that disregarded area above their heads as the attic.

Simply like the basements, attics are places that are prepared for expansion due to the broad structural building is kept to a least. Many structures of the building, comprising of outside walls, joists, roof and another costly contractor-driven characteristic that is already in place.

One characteristic that generates an attic bedroom that is so demandable for homeowner use together for ultimate resale is a bathroom. However, realize the common outlines of placing the basic and minimum cost of attic bathroom.

Tip: Isolate the improvement of a pre-existing bathroom, only establishing a new brand bathroom can include heavy wiring and plumbing work. For the renovation of this degree, our experts really recommend hiring a pro.

Determine Your Desired Type Of Attic Bathroom

Complete bathrooms, forming a sink, toilet and bathing facilities, add the highest utility and value of your attic.

Basically complete baths are so expensive where the shower or bathtub adds strong weight to flooring at the same time originating more complexities with drainage lines and water supply. Several homeowners place a half bathroom toilet and sink only, but no bathing benefits.

Fix On Bathroom Placement

The greatest probable ceiling for an attic bathroom is generally granted by locating the room near to the middle of the house, where the roof summit is at its highest.

Take into account the essential services that are needed for building bathroom-water supply lines, electrical supply wires, sewer lines, branch drainage lines and vent stack. As these services are noticeable in the kitchen or bathroom on the floor below, it reminds us to locate the attic bathroom immediately in either of those rooms, especially a bathroom.

Ensure Building Permits

Because of safety matters, attic alterations of any kind are managed by the building code.

Notice your local permitting office regarding the kinds of permits you will require to accommodate prior to building a living place within your attic. Even, bathroom expansions in any section of the house permanently come with code restrictions and permit requirements.

Enhance Structural Protection For The Flooring

Attic floors sometimes are built to make up just the greatest deadweight load. The deadweight importantly means an attic that is merely used for stocking boxes.

And live weight load means the average weight carried by the floor, such as occupants, furnishings and other temporary and permanent items. Flooring joist span tables will help you giving information regarding strengthening the joists. It is also better to consult with a structural engineer or a deserving contractor.

Design The Floor Plan

Prospering a strong bathroom floor plan is critical to matching all of the required objects in this tight space. Start by figuring out the broad item that will be placed in the space and constructing downward in size. If it is a small complete bathroom, a standard alcove bathtub size will be 60 inches long.

That means the tub should be surrounded by 3 walls, where the tub will match tightly in opposition to the walls. The following size is the vanity of the bathroom. If it is a premium room, you can install a space-saving pedestal sink too.

Needed tools and materials:

  • Toilet
  • Floor covering like luxury vinyl plank
  • Subfloor: ½ inch or ¾ inch thick a/c graded plywood
  • Two-by-fours
  • Drywall screws
  • Water-proof drywall
  • Drywall compound and sanding sheets
  • Bathtub (if necessary)
  • Bathroom sink and vanity
  • Shower/bathtub direct-to-stud surrounds kit (in necessary)
  • GFCI outlets and electrical boxes
  • Electric cables: 12-gauge and 14-gauge
  • Drainage pipes and plumbing supply

1. Construct Subfloor And Interior Walls

Apply the complete sheets of ½-inch or ¾-inch thick a/c-graded plywood laid across the hardened joists to construct a base for the floor covering. Inside, non-load-bearing walls will require to be formed within the attic to construct the bathroom space. To build walls together the studs spaced, two-by-fours are used each 16 inches in-middle.

Plumbing pipes and electrical wires will work through these walls. Due to the unique triangular shape of attics, the short walls named knee walls are used to surround the lower section of the triangles.

Turn the stud assemblies with drywall tied to the studs using drywall screws.

2. Set Bathroom Electrical Circuits

The attic bathroom will require electricity to supply a minimum of two 20-amp GFCI together with one switch-controlled ceiling light. The bathroom exhaust fans are not needed by maximal codes.

Instead, a window 3 feet square or more are efficiently opened minimum halfway. Because of the inconvenience of adding openable windows in an attic, a bathroom fan is mostly recommended.

3. Install Plumbing

The attic bathroom plumbing can be skilful to set. And it can also be reasonably simple for a do-it-yourself to expand the water supply lines from a lower floor, venting and drainage can be extra hard to plan attic drain into the line right away above the tower bathroom may generate drainage problems the reason for hampered venting.

It may need to cut the drain in at the lower floor assuring proper venting. It is strongly recommended that you inscribe the help of a qualified plumber for attic bathroom plumbing.

4. Setting The Bathtub Shower And Surround

Pre-constructed shower or bathtub and wall surround units allow the fastest, easiest way of placing bathing benefits in your attic. And, the reason for weight, tiled units can be immensely heavy. Fibreglass or acrylic pre-constructed units are extremely lighter than tiled units.

The surrounds are screwed and caulked straight away to the open studs that composite the attic bathroom’s walls. Due to the attic entrance can be troublesome where may be required to use three or five-piece wall surround kits.

5. Establish A Floor Covering

To minimize weight, take into account placing a lighter weight floor covering for the attic bathroom. Luxury vinyl tile, vinyl plank and sheet vinyl flooring are so lighter than porcelain or ceramic tile. If you are having a special contractor from the bathroom, it is easy to complete this project by yourself saving money.

Set the bathroom sink and vanity: Install your bathroom sink and vanity and adjust to the plumbing stub-outs that were set in the right place prior to the plumbing rough-in.

Establish a toilet: Install your toilet by placing the silicone ring or wax ring on top of the closet flange and screw it into the proper place by the included hardware. Don’t screw it too tight or you hazard cracking the toilet. Now, connect your water supply lines to the toilet at the same time turn them on.


Finally, installing an attic bathroom is not so difficult task. Just follow our above discussion and take the step to place the attic bathroom that makes your building more facilitative.

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