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GoBoard Shower Pan Kit
The Johns Manville GoBoard® Shower Pan Kit is a durable, waterproof, versatile kit that offers easy, on-site shower pan customization allowing for same day tile and and is ideal for both the Pro and DIYer. It is great for new shower build-outs or tub to shower conversions and accommodates center and offset drain locations, and curbed or curbless applications. Pair your project with GoBoard Tile Backer Boards for walls, ceilings and floors to complete your shower project.
Tile Backer Shower Pan Kit
GoBoard Shower Pan Kit


GoBoard® Shower System from Johns Manville is a time saving versatile shower system, and it's the right choice for both DIYers and pros.
- On-site shower pan customization
- Engineered for speed
- Low profile drain riser
- Easy to Cut
- Waterproof built-in
Everything is in the box! The GoBoard Point Drain Shower Pan Kit includes:
- GoBoard Point Drain Kit
- Four GoBoard Wedges
- Two GoBoard Curbs
- 3 Tubes of GoBoard Pro Sealant







Materials Sold Separately
- 1/2″ GoBoard Tile Backer Board
- GoBoard Fasteners
- GoBoard Washers
- GoBoard Seam Fabric (optional)
Recommended Materials and Tools
- utility knife
- pencil, or pen for marking
- straight edge
- drywall T-square
- measuring tape
- speed square
- rubber mallet
- flat putty knife
- corner putty knife
- level
- 5-gallon bucket
- 1/4″ square notched
- 3/16″ v-notched trowel
- caulk gun
- 5″ hole saw or jigsaw
- inside pipe cutter (if necessary)
- Cordless drill
- #2 Phillips bit
- thin-set mortar
- PVC primer
- solvent cement
Joint Sealing
GoBoard Pro Sealant (or approved alternative).
Grout
Cement grout compliant with ANSI A118.16 standard, high-performance cement grout compliant with ANSI A118.7 standard, or epoxy grout compliant with ANSI A118.8 standard.
Safety
Please wear gloves, safety glasses, long sleeve shirts, and long pants and follow good safety practices when installing GoBoard Wedge and GoBoard Curb. Temporary mechanical abrasion (itching) of skin, eyes, and respiratory tract may occur upon exposure to fibers or dust during handling. GoBoard contains no cement. Wearing a respirator is recommended when working with GoBoard Pro Sealant in areas that are not well ventilated.
Storage and Handling
Kits can be stored on the sides or flat in an enclosed shelter.
Installation Instructions
GoBoard Point Drain Shower Pan Kit Installation Instructions
GoBoard Point Drain Shower Pan Kit Installation Instructions (ES)
GoBoard Point Drain Shower Pan Kit Installation Instructions (FR)
GoBoard Point Drain Installation for Cement Slab
Product Certifications
ICC-ES Evaluation Report (ESR-3767)
ICC-ES PMG Product Certificate (PMG-1439)
GoBoard Curb



GoBoard® Curb is a block-shaped tile backer board profile from Johns Manville. GoBoard Curb is designed to provide a thick block-like underlayment profile for use in fabricating the curb of the shower pan. Multiple curbs can be placed next to each other for larger shower areas. Like the original GoBoard, it’s engineered for durability, yet is up to 80% lighter than other building materials typically used to fabricate shower pan curbs.
- Fast Installation
- Lightweight
- Easy to Cut
- Waterproof built-in
GoBoard composite backer boards provide equivalent performance to ANSI A118.9, and as a waterproof membrane in wet areas, provides equivalent performance to ANSI A118.10 when installed in accordance with Section 4.2.4 of the ICC-ES evaluation report.
GoBoard Curb is a component of the GoBoard Shower Pan System.
- Use for shower pan curbs
- Use for fabrication
*GoBoard Curb is only sold as a component of the GoBoard Shower Pan Kit.


Product Certifications
ICC-ES Evaluation Report (ESR-3767)
ICC-ES PMG Product Certificate (PMG-1439)
GoBoard Wedge


GoBoard® Wedge from Johns Manville is a pre-sloped waterproof tile backer panel for shower pans. Like the original GoBoard, it’s engineered for durability, yet is up to 80% lighter than cement boards. It was developed to offer easy on-site customization of the shower pan, so there’s no need to move the plumbing. Discover the possibilities using only four GoBoard Wedges.
- Fast Installation
- Lightweight
- Easy to Cut
- Waterproof built-in
GoBoard composite backer boards provide equivalent performance to ANSI A118.9, and as a waterproof membrane in wet areas, provides equivalent performance to ANSI A118.10 when installed in accordance with Section 4.2.4 of the ICC-ES evaluation report.
GoBoard is available in the following size:
- 4 ft x 4 ft
- Slope: 1/4″ per foot
- 1/8″ skinny side
- 1 1/8″ thick side
*GoBoard Wedge is only sold as a component of the GoBoard Shower Pan Kit.

