Wedi offers a product system consisting of shower floor elements with integrated drainage, tile backer/wall panels, curb and seat structures, wall niches, sealants, and many other accessories. Wedi products can be combined to create a complete installation kit to build a fully waterproofed shower that can be tiled over. Nothing else is needed between your home’s framing structure and the tiled finish surface. Wedi Shower Systems are highly customizable despite the high level of prefabrication, are clean to work with, and are fast to install.

How to plan and build a complete Wedi shower in 5 Steps?

While many products of the Wedi Shower Systems are marketed as complete kits in one box, a Wide range of à la carte product options exist to create a completely custom shower design. This section will explain which products are needed to create a shower floor or wall, which products are needed to equip the shower with niches or benches, and which installation accessories are necessary for the assembly.

Step 1: Floor Products

Step 2: Wall Products

Step 3: Prefabricated Modules

Step 4: Installation Accessories

Step 5: Finishing Details

Step 1: Choose Shower Floor Products by Size and Requirements

Select the appropriate Wedi shower floor products based on project size and installation requirements, with options designed to provide reliable waterproofing, proper drainage, and flexible solutions for a variety of shower configurations.

• Wedi Fundo Shower Base 

  Wedi Fundo Shower Bases are waterproofed and feature a durable, presloped surface designed for reliable drainage and both small and large size tile finishes. Available with center or off-center drain locations, the shower bases are lightweight, insulating, easy to cut and customize, and include a Wedi Fundo Click and Seal Drain Kit.

  Features:

  • Multiple base sizes and extensions available: all customizable on site, if needed
  • Square and rectangular base options with center or off-center point drain locations
  • Slope design allows for use of small or large-format tile when cut along slope lines
  • Install over various types of subfloors

• Wedi S-DRY Shower Base

  Wedi S-DRY Shower Bases are waterproofed and feature a durable surface allowing for small and large size tile finishes. What’s more, the shower base is insulating, light but very dense, and easy to cut and customize with a utility knife.

  Features:

  • High Density EPS foam core; Pre-sloped
  • Wedi S-DRY SEAL coating for added waterproofing and strength
  • Wedi S-DRY Membrane for primary waterproofing and bond surface
  • Wedi S-DRY Drain fully integrated and waterproofed with low profile installation depth ensuring it does not interfere with floor joists. The flange provides solid support especially to small tile and over subfloor cut-outs where the drain connects to plumbing

• Wedi Fundo Curbless Shower Base

  These pre-sloped and internally waterproof shower bases are designed with a low profile perimeter thickness ranging from 3/4 in. to 1-1/8 in. to allow for an easier recess into subfloor construction or when barrier-free entry is required (where the shower base surface needs to be flush with the surface of the underlayment products used on the adjacent bathroom floor). They come with a Wedi Fundo Click and Seal Drain Kit.

  Features:

  • Use in combination with Wedi S-DRY sheet waterproofing membrane or wedi Building Panels applied at least 2-1/2 ft. out into the bathroom floor area for a waterproof transition
  • When used with a Wedi Curbless Shower Recess Kit, you can easily and safely recess single layer 3/4 in. plywood subfloors in between 16 in. on-center floor joist designs (solid joists or engineered I-joists)
  • All the Wedi Fundo key features but specifically designed for lowest installation depth into a subfloor structure
  • Fast and controlled connection to plumbing waste lines made from top surface to a pipe 5/8" below the floor using an inside pipe cutter

• Wedi Shower Extensions

  Wedi Shower Extensions are robust, pre-sloped, and internally waterproof. You can select one or more extensions to extend your shower floor area to the exact size your project requires.

  Features:

  • Multiple sizes: all customizable on site, if needed
  • Straight and corner extensions available
  • Slope design allows for use of small or large-format tile when cut along slope lines
  • Install over various types of subfloors

• Wedi Shower Curbs

  These internally waterproof shower curbs are designed for shower entry designs where transitions are required. All wedi curb options except Wedi Curb Caps, which work in combination with 2 x 4 framing support, are slightly sloped to direct water towards the drain of the shower. All wedi curbs can carry a weight of 280 lbs./ft.

  Features:

  • Multiple sizes and styles: all customizable on site, if needed
  • Shower Curb AT designs - perfect for glass door construction
  • Slope design allows for use of small or large-format tile when cut along slope lines
  • Install over various types of subfloors

• Wedi S-DRY Shower Curb

  Wedi S-DRY Curbs are designed for shower entry designs where transitions are required. These curbs are waterproofed and feature a durable surface allowing for any size tile finishes. Curbs can be sloped towards the draining using thinset mortar (such as Wedi PRO-SET) during installation.

  Features:

  • Multiple sizes: customizable on site, if needed
  • High Density EPS foam core; Pre-sloped
  • Wedi S-DRY SEAL coating for added waterproofing and strength
  • Wedi S-DRY Membrane for primary waterproofing and bond surface

Here is how you select the right shower base size to fit the job in most cases:
Determine the distance between the center of the 2 inch pipe in the subfloor to all framed walls and where you plan to have the inside of a wedi curb (as if it were another framed wall). Next, take note of the longest dimension of the two distances measured along each axis (east/west and north/south).

You will need to select a shower base that covers twice the length of the longest dimensions along each axis. This will ensure that the shower base will cover the entire shower area and, if needed, can be trimmed on-site to position the integrated wedi drain over the 2 inch wastepipe in the subfloor.

This method of calculating the correct shower base works for square and rectangular spaces with a mostly-centered drain location. Where drains are very close to a wall, one of our off-center drain bases should be used, if possible. Refer to our Technical Drawings section to select the correct base that will cover your shower dimensions and properly align the integrated wedi drain with the floor drain pipe.

See an example here: picked a 36 in. x 48 in. Wedi Fundo Shower Base to fit best into a shower space with an offset drain, measured at 16 in. from the east/west wall and 18 in. from the north/south wall:

Offset drain location in
34 in. x 42 in. shower area

Wedi Fundo Shower Base
36 in. x 48 in. Base with Center Drain

Cuts on 36 in. x 48 in. shower base
to fit shower space

Note: When modifying shower bases, always remember to recreate the prefabricated channel in Wedi Fundo shower bases.
Please consider the individual perimeter thickness of wedi shower bases so that floor recesses and floor transitions can be properly planned, especially when designing curbless showers.

Please note, Wedi S-DRY shower bases are purposely oversized to easily accommodate standard sizes even where the drain is slightly off center.

Step 2: Choose Shower Wall Products by Size and Requirements

Select the appropriate wedi shower wall products based on project size and installation requirements, with solutions designed to provide durable tile-ready surfaces, reliable waterproofing, and compatibility with a variety of shower and steam shower wall assemblies.

• Wedi Building Panels

  The perfect waterproof tile backer board and substrate for nearly any wall, floor, or ceiling application in interior wet areas. A variety of sizes and thicknesses to accommodate different projects and applications.

  Features:

  • Multiple sizes and thicknesses: all customizable on site, if needed
  • Solid and internally waterproof core material reducing the risk from walked in nails or pinhole damages during construction
  • Offers a cement covered surface for premium shear -and tensile bond strength with tile and most all thinset mortars suitable for wet areas

• Wedi Vapor 85

  The Wedi Vapor 85 Building Panel is used for steam rooms and steam showers. Its coating is formulated to bond best with S-DRY SEAL.

  Features:

  • Special tile backer board system designed and made for premium performance in steam shower and steam room installations
  • Customizable on site, if needed
  • Features an additional vapor barrier membrane pre-applied by wedi on the vapor facing side of the panel

• Wedi S-DRY Membrane

  The Wedi S-DRY Membrane can be used to waterproof walls in a Wedi S-DRY Shower System, and is made from the same fabric that is used to waterproof all Wedi S-DRY products.

  Features:

  • Can be used over existing drywall, cement board, or other existing wall panels in S-DRY Systems
  • Extremely strong waterproofing and vaporproofing capabilities

To determine the size and quantity of Wedi Building Panels you will need for your shower, please follow the steps outlined below:

First, you must calculate the total area of the shower walls. To do this, measure the area of each shower wall by multiplying the length of the wall by the height. The height of each wall will be determined based on how high you plan to install the tile. Next, add the calculated square footage of each wall together to determine the combined sum of all the shower walls. Account for about 15% extra square feet of building panel or wall membrane for any waste cuts by multiplying the combined area of all shower walls by 1.15. If you select S-DRY membrane, you would want to consider extra surface for the needed 2 inch overlap at seams unless you will work with tape to cover seams.

Next, divide the total area of the shower walls by the square foot area of the Wedi Building Panels or membranes you plan to use (eg: 4 x 5 ft. building panel = 20 square feet). A total shower wall area of 115 square feet divided by 20 square feet per building panel gives us a total of 5.75 building panels. Remember to always round up to the next whole building panel or roll of wall membrane.

Please note: Wedi Building Panels and wall membranes must extend to the outside edge of the shower curb element for proper water-proofing, so be sure to account for the added dimensions of the shower curb to your shower side walls when determining the size of the building panels or wall membranes. For example, a 3 x 5 foot building panel is NOT a good option for a 36 inch shower wall, where the curb extends beyond the 36 inch shower base, because you will have to install the panel horizontally to reach the outside edge of the curb, resulting in unnecessary waste.

In general, the larger building panels or the S-DRY XL wall membrane are the more economic option. The traditional 3 x 5 foot building panels are most often used for tub surrounds where the true dimensions of the tub are closer to 32 in. x 60 in.

Please note: in steam shower projects, you will also need enough Vapor 85 building panels to cover the ceiling (calculate square feet as you did for walls, and choose the largest panels possible for faster and cleaner installation with fewer seams to treat overhead).

Tip: choose the Wedi Building Panel sizes that will keep your installation process fast, efficient, and eliminate unnecessary seams and waste. For example: a shower wall that is 5 feet wide and 8 feet high can be covered with TWO of the 4 x 5 foot wedi building panels, whereas that same wall would require THREE of the 3 x 5 foot building panels, resulting in an extra seam and wasted product. Especially when working with wall membrane try to use membrane lengths that will allow you to minimize the number or length of seams because they are more involved to prepare.

Step 3: Choose and add Prefabricated Modules

Wedi offers a variety of customizable add-ons and design upgrades. Made from prefabricated Wedi Building Panels, these additional items provide the same durability and waterproof seal as the

rest of the Wedi shower system. Prefabricated modules can be cut to fit any size and bring added comfort, functionality, organization, and safety to any shower, bath, or wet room design.

• Wedi Shower Seats and Benches

  Seating options inside a shower design can add both value and comfort. Choose a seat or bench that best compliments your shower design. 

  Features:

  • Prefabricated, slightly-sloped bench options.
  • Suspended seat solutions with mounting brackets for existing framing.
  • If prefabricated options don’t fit your design, you can create a custom piece using 11/2 in. or 2 in. building panels.

• Wedi Shower Niches

  The perfect fit for all shower necessities like shampoo bottles in all sizes. Wedi Shower Niches are made from the waterproof Wedi Building Panel for absolute strength and integrate smoothly into every Wedi shower installation.

  Features:

  • Can be trimmed or extended if needed
  • Further customization can be achieved by utilizing
  • Wedi Shower Niches Shelf options in place of the adjustable shelves that are included with larger niche options. (Shelf information available in Step 5)
  • Wedi Shower Niches can be used in Wedi S-DRY assemblies and transitions are waterproofed using S-DRY SEAL and S-DRY tape.

Step 4: Choose Installation Accessories

Complete the shower system with the appropriate installation accessories, including products designed to support waterproofing, secure seams and fasteners, and ensure a safe and reliable installation for both traditional and steam showers.

 Sealants

   Wedi Joint Sealant - Used in conventional shower and tub designs to waterproof, connect, and reinforce seams and fastener points.

• Packaged in 10.5 oz. tubes or 20 oz. sausages
• Average shower installation uses approximately 1.2 oz. of Wedi Joint Sealant per square foot of wall panel surface (includes a shower base and curb installation)
  Example: A 3 x 5 ft. shower with three walls 8-foot tall and one 5-foot curb may require up to ten 10.5 oz. cartridges of Wedi Joint Sealant, or five 20 oz. Wedi Joint Sealant sausages
• Prefabricated modules or design upgrades may require additional Wedi Joint Sealant: shower niches - one additional tubes, seats - two additional tubes, benches - three additional tubes

   Wedi S-DRY SEAL - Used for sealing and connecting membranes, corners, seams and pipe protrusions in a Wedi S-DRY System.

• Powder and liquid components mixed together to create compound
• Packaged as a 32 oz. bottle and two 16 oz. bags (total 32 oz.)
• 1 bag of powder is mixed with half a bottle of liquid to create compound

   Wedi Sealant 620 - Used with Subliner Dry products this product will be replaced with Wedi S-DRY SEAL in 2026.

• Packaged in 10.5 oz. tubes or 20 oz. sausages

 Fasteners and Tools

   Wedi Fastener Kits - Used to fasten Wedi Building Panels to wall framing structure.

• Packaged in units of 100: coated Phillips head screws in the ideal length and gauge to work with wood framing and light gauge metal framing; tab washers made of strong gauge treated steel to integrate the screw head safely and hold the weight of the finished installation
• Average shower or steam room installation uses one wedi screw and washer per square foot of Wedi Building Panel.
  Note: on a ceiling application, you will need to double the amount of fasteners (ceiling square footage multiplied by 2 + wall square footage for the total washers/screws needed)

   Wedi Tabless Fastener Kits - Used for Vapor 85 assemblies (and flooring installations with 1/8 in. or 1/4 in. Wedi Building Panels).

• Packaged in units of 100: coated Phillips head screws in the ideal length and gauge to work with wood framing and light gauge metal framing; tabless washers made of strong gauge treated steel to integrate the screw head safely and hold the weight of the finished installation
• Average shower or steam room installation uses one wedi screw and washer per square foot of Wedi Building Panel.
  Note: on a ceiling application, you will need to double the amount of fasteners (ceiling square footage multiplied by 2 + wall square footage for the total washers/screws needed)

   Wedi Corner Putty Knife - Used in the installation of Wedi panels meeting at 90 degree angles.

• Packaged individually
• Putty knife blade markers indicate proper seam treatment width
• Specially-shaped with round tip for corner seam sealant application and often used in combination with standard flat putty knifes on flat seams or fastener point sealant application

   Wedi Sealant Gun and Replacement Tips - Used to easily apply Wedi Joint Sealant or Sealant 620.

• • Replacement tips packaged in boxes of 10
  • Used with either 10.5 oz. cartridges or 20 oz. sausages

The Wedi Subliner Dry system aids in the installation of waterproof transitions between the plumbing and the shower, the shower base and bathroom floor, in steam or vapor rooms, and in other applications where pliable surface waterproofing with low buildup is ideal.

   Wedi S-DRY Membrane - Sheet waterproofing membrane used to cover wall surfaces and other surfaces in a Wedi S-DRY Shower system or over mortar bed installations.

• Packaged in rolls, 50 in. x 25 ft. or 80 in. x 16 ft. (XL)
• Average Wedi S-DRY shower installation uses one roll of 50 in. x 25 ft. Wedi S-DRY

   Wedi S-DRY Tape - Used create a waterproof seal over wall surface transitions and other surface transitions.

• Packaged in a 5 in. wide x 32 ft. long roll
• Average 3 ft. x 6 ft. Wedi S-DRY shower with 4 walls, ceiling and 2 benches uses three rolls of wedi sealing tape

   Wedi S-DRY Inside and Outside Corners - Used to aid waterproof and vaporproof transition between shower base and any corners within 30 inches of the shower on the outside of wedi shower bases in the general bathroom area or in steam shower applications with Wedi Vapor 85.

• Average curbless shower installation may use two Wedi S-DRY Outside Corners
• Average steam shower installation may use six-to-eight Wedi S-DRY Inside Corners and six-to-eight Wedi S-DRY Outside Corners
• Packaged as sets of two, in 90° or 135° angles

   Wedi S-DRY Sealing Collars - Used to aid waterproof transition around shower pipe or fixture protrusions.

• Average shower or steam room installation uses one Wedi S-DRY Shower Pipe Collar per pipe protrusion and one Wedi S-DRY Mixing Valve Seal per mixing valve
• Packaged individually
• Note: Due to many design variants of mixing valves used in bathroom designs, the Wedi S-DRY Mixing Valve Seal may have to be modified to fit the installation. This can be done by cutting its fleece sheet to open up the diameter of its opening for larger mixing valves. The collar functions to divert moisture moving through the thinset layer behind a wall tile. The moisture in a wall assembly mostly moves downward and any cuts in the collar around the top half of the mixing valve should be avoided. Be sure to place with its correct side facing the framing - the side with the 1/2 in. long protruding rubber

   Wedi Vapor 85 Fastener Patches - Used to waterproof and vaporproof fastener points in steam shower installations.

• Packaged in kits of 100 3 in. x 3 in. patches
• Applied with Wedi S-DRY SEAL

   Wedi Subliner Dry Tub Tape - Used to create a waterproof back-up to a tub’s traditional surround wall backers when no tub flange or only partial flanges are built into the tub.

• Packaged in a 5 in. wide x 12 ft. long roll with a self-adhesive strip to adhere to a smooth tub surface and is sealed against framed blocking using Wedi Joint Sealant (serves as a back up for otherwise-vulnerable sealed joints between a backer board and a prefabricated tub surface when no flanges secure waterproofing)
• Average tub installation uses one roll of Wedi Tub Sealing Tape

Step 5: Choose Finishing Details

Add the final touches to the shower design with finishing details that combine style and functionality, from drain covers and niche shelves to other options that complement the bathroom’s fixtures and overall design.

• Wedi Drain Covers

  Drain covers are sold à la carte to allow you to select your finish. You can choose your drain cover set from collection, available in various colors and designs. Each Wedi Drain Cover is precision cut and made in the U.S.A from high quality stainless steel, with finishes that resist physical and chemical exposure challenges commonly found in wet room installations.

  
  Wedi Fundo Linear Drain Covers

  • Linear Covers and Channel Frames available
  • Available in a variety of colored finishes, or a tileable option

           Wedi Fundo Point Drain Covers

• • Available in a variety of colored finishes or styles, or tileable options
  • Can be used with Wedi Fundo or Wedi S-DRY shower bases
    Note: S-DRY bases may require use of the wedi S-DRY Fundo Drain Cover Support piece.

           Wedi S-DRY Point Drain Covers

• • Available in a variety of colored finishes

• Wedi Shower Niche Shelves

  If you are adding a niche to your design, you can choose a premium shelf to replace the tileable foam shelf that comes with some of Wedi’s larger niches, and match it to your chosen drain cover.

  • Available in low-iron, clear, tempered glass with pencil-polished edge; brushed stainless steel finish; or aluminum anodized in matte black finish
  • Installed with Wedi Joint Sealant or clear silicone, resting on niche tile assembly