GoBoard is a waterproof tile backer system developed by Johns Manville designed to simplify tile installation in both residential and commercial settings. Engineered for speed, durability, and ease of handling, the system offers an alternative to traditional cement backer boards. This article details the components, installation process, and applications of GoBoard, based solely on provided documentation.
Understanding the GoBoard System
GoBoard functions as a substitute or supplement for conventional cement backer boards used in tile underlayment. A key advantage of GoBoard is its resistance to disintegration or crumbling when cut, allowing for on-site adjustments. The material’s lightweight nature simplifies transportation, handling, and installation, particularly in areas with limited space, such as shower walls or ceilings.
The system’s benefits include streamlined installation and enhanced durability. GoBoard is designed for use in kitchens, bathrooms, showers, and other tiled surfaces.
GoBoard Components
The GoBoard system comprises several specialized components designed to work in conjunction with the backer board itself. These include:
- GoBoard Curb: Specifically designed for fabricating shower pan curbs, providing a thick, block-like underlayment profile.
- GoBoard Drain Components: These include risers and grates to enhance design flexibility in shower pan systems.
- GoBoard Fasteners: Engineered for compatibility with the GoBoard system, ensuring both holding strength and durability.
- GoBoard Washers: Used in conjunction with fasteners to maximize holding strength, particularly for larger or heavier tiles.
- GoBoard Pro Sealant: A moisture-curing sealant used for sealing seams and recovering from fastening errors.
- GoBoard Seam Fabric: Applied over joints between GoBoard panels to prevent cracking and ensure structural continuity.
- GoBoard Wedge and Point Drain Kit: Used for proper water runoff and curbless installation support in shower pan projects.
GoBoard Installation Process
The installation of GoBoard involves several key steps, based on guidelines from Johns Manville and general cement board installation techniques.
Preparation and Planning
Prior to installation, it is crucial to assess the structural integrity of the area and check for moisture exposure. In wet areas like showers, tub surrounds, and bathroom floors, existing drywall or green board must be removed before installing GoBoard directly over the studs and membrane.
Attaching GoBoard to the Stud Frame
GoBoard panels should be secured to wood or metal studs using GoBoard Tile Backer Board Fasteners. The manufacturer recommends specific spacing for these fasteners. For heavy or large tile formats, GoBoard Washers can be used with flat head #7 through #9 exterior-grade screws to increase holding power.
Installing Joints and Seams
Seams and joints between GoBoard panels require reinforcement using GoBoard Seam Fabric. This fabric prevents cracking and ensures structural continuity without the need for additional thin-set mortar. Overlapping seam fabric where it meets is recommended for a clean and uniform application, avoiding excessive doubling or overlapping.
Best Practices for Installation
Several best practices are recommended to ensure a long-lasting and watertight tile application when using GoBoard:
- Always use GoBoard Fasteners to attach the board to the underlying stud frame.
- Avoid installing any underlayment, including GoBoard, over drywall in wet areas. Replace drywall with GoBoard installed directly over the studs and membrane.
- Utilize GoBoard Pro Sealant for all sealant applications, including correcting misalignment or voids.
- Employ GoBoard Washers for areas with larger or heavier tiles to maximize holding strength and prevent tile detachment.
- Incorporate the GoBoard Wedge and Point Drain Kit when working on shower pan projects to ensure proper water runoff and support for curbless installations.
Addressing Fastening Mistakes
GoBoard Pro Sealant can be used to address fastening errors that may occur during installation. The sealant adheres to both the backer board and surrounding building materials, providing a robust solution for gaps or misalignment.
Johns Manville’s Research Manager, Duane Paradis, notes that GoBoard Fasteners offer advantages over traditional cement backer board screws in terms of holding power and installation speed. The use of GoBoard Fasteners may allow for increased spacing between fasteners, reducing the number of penetrations and potential stress points.
Handling and Cutting
The documentation does not provide specific instructions on handling and cutting GoBoard beyond noting its resistance to crumbling during cutting.
Applications
GoBoard is suitable for a variety of tiling applications, including:
- Showers
- Tub surrounds
- Bathroom floors
- Kitchens
- Other tiling surfaces
The system is particularly well-suited for wet areas due to its waterproof properties. It is also designed to accommodate various tile formats.
GoBoard vs. Cement Board
GoBoard is presented as a versatile and user-friendly alternative to traditional cement backer boards. While sharing some application similarities, GoBoard’s ease of handling, compatibility with various tile formats, and quick installation capabilities make it an attractive option for modern tile projects.
Conclusion
GoBoard Tile Backer Board represents an advancement in tile underlayment technologies, combining speed, durability, and waterproofing properties. It is designed to reduce the time and steps traditionally associated with tile installation, particularly in wet areas. With specialized components and reinforced sealing and fastening accessories, GoBoard offers a complete system-centric solution for both residential and commercial projects. The system’s design prioritizes ease of use and a watertight seal, offering a viable alternative to traditional cement backer boards.