TI-ProBoard® Structural Composite Deck Panels
TI-ProBoard is a structural composite underlayment designed to create a strong, stable base for exterior tile deck systems and interior applications.
Built from pultruded fiberglass, TI-ProBoard installs directly onto joists, eliminating the need for traditional decking, plywood, or backer boards. This creates a durable, low-profile substrate that simplifies installation while improving long-term performance.
Designed for both residential and commercial projects, TI-ProBoard is ideal for:
Outdoor tile decks and balconies
Rooftop terraces and walkways
Curbless showers and interior tiled floors
Why Choose TI-ProBoard
Installs directly over joists (up to 24" on center)
No plywood or additional subfloor required
Low-profile 3/8" thickness for seamless transitions
Resistant to moisture, freeze/thaw, and environmental exposure
Creates a durable, long-lasting tiled surface
Each panel measures 1 ft x 8 ft and is engineered to withstand harsh outdoor conditions including rain, snow, and temperature changes without expansion or degradation.
Installation Overview
Install panels perpendicular to joists and ensure proper slope for drainage. Once secured, apply an exterior-rated mortar and screed across the ribbed surface.
For installations over living spaces, apply a waterproofing membrane before tiling.
Set tile using a latex-modified thinset meeting ANSI A118.4 or higher.
Performance & Testing
Rated “Extra Heavy” under ASTM C627 (Robinson Floor Test)
Achieved Commercial Floor rating in suspended system testing
Recognized in the TCNA Handbook under Structural Ribbed Self-Supporting Boards (SRSB)
Backed by a 10-year limited warranty, TI-ProBoard is a proven solution for long-lasting tile deck systems.
Installation Resources
Helpful guides and video instructions for TI ProBoard:
TI ProBoard Installation Instruction Guide
Shop TI-ProBoard: View TI-ProBoard Deck System