Product Overview
SpeedSet is a quick-setting, polymer-modified mortar designed for tile installations. It is suitable for both commercial applications and cold temperature environments, as well as for smaller residential projects and repairs. Its rapid-curing properties enable grouting in as little as 3 hours and allow for light foot traffic within 4 hours of application.
Key Features:
- Rapid setting for time-critical installations, allowing grout application in 3 hours and light traffic in 4 hours.
- Formulated for use with ceramic, porcelain, and natural stone tiles.
- Ideal for repair work and smaller-scale tile installation jobs.
- Polymer-modified for enhanced performance and adhesion.
- Exceeds industry standards ANSI A118.4 and A118.11.
Setup and Preparation
Surface Preparation:
Ensure all surfaces are clean, dry, structurally sound, and free from dust, dirt, oil, grease, paint, curing compounds, sealers, and any other contaminants that may inhibit proper bond. Substrates must be flat and level according to industry standards.
Mixing Instructions:
For a 25 lb (11.34 kg) bag of SpeedSet Thinset Mortar, gradually add approximately 5.5 to 6 quarts (5.2 to 5.7 liters) of clean, potable water to a clean mixing bucket. Add the powder slowly while mixing with a low-speed drill (300 RPM or less) equipped with a paddle mixer. Mix until a smooth, lump-free consistency is achieved. Allow the mixture to slake (stand undisturbed) for 5-10 minutes, then remix briefly before use. Do not add more water after slaking.

Image: A 25 lb bag of SpeedSet Professional Rapid Setting Thinset Tile Mortar in Grey. The bag displays product branding, key features, and safety warnings.
Application
Trowel Application:
Apply the mixed mortar to the substrate using the flat side of a trowel to key in a thin coat. Then, immediately apply additional mortar with the notched side of the trowel, holding the trowel at a 45-degree angle to the surface. Use the appropriate notch size for the tile being installed to achieve proper mortar coverage (typically 80% for dry areas and 95% for wet areas or exterior applications).
Tile Placement:
Place tiles firmly into the wet mortar with a twisting motion to ensure full contact and collapse the mortar ridges. Periodically lift a tile to verify proper coverage. Do not spread more mortar than can be covered with tile within 10-15 minutes (open time) to prevent skinning.
Curing Time:
SpeedSet allows for grouting in as little as 3 hours after tile installation. Light foot traffic can typically resume within 4 hours. Full cure and heavy traffic can be expected after 24-72 hours, depending on environmental conditions and substrate type.

Image: A person wearing blue gloves is shown kneeling and carefully placing a light-colored tile onto a bed of freshly applied grey thinset mortar, demonstrating the tile installation process.
Maintenance
Once cured, SpeedSet Thinset Mortar requires no special maintenance. Tiles installed with this mortar should be cleaned according to the tile manufacturer's recommendations. Avoid using harsh abrasive cleaners or strong acids on the grout lines or tile surface, as these may damage the tile or grout.
Troubleshooting
- Poor Adhesion: Ensure the substrate is clean, dry, and free of contaminants. Verify proper mixing ratios and adequate mortar coverage under tiles. Avoid applying mortar to excessively hot or cold surfaces.
- Slow Setting: Low temperatures and high humidity can extend setting times. Ensure proper ventilation and maintain recommended ambient temperatures during installation and curing. Do not add excessive water to the mix.
- Mortar Skinning: This occurs when the surface of the applied mortar dries before tiles are placed. Do not spread more mortar than can be covered within the open time (typically 10-15 minutes). If skinning occurs, remove the skinned mortar and apply fresh material.
Product Specifications
| Specification | Detail |
|---|---|
| Product Name | SpeedSet Professional Rapid Setting Thinset Tile Mortar |
| Brand | CUSTOM |
| Material | Polymer-modified |
| Item Weight | 25.34 Pounds (11.49 kg) |
| Product Dimensions (L x W x H) | 14 x 12 x 3.25 inches |
| Manufacturer | Custom Building Product |
| Country of Origin | Canada |
| Date First Available | April 23, 2022 |
| ANSI Standards Met | A118.4, A118.11 |
Warranty Information
Specific warranty details for SpeedSet Professional Rapid Setting Thinset Tile Mortar are not provided within the product data. For comprehensive warranty information, please refer to the official Custom Building Products website or contact their customer service directly. Always retain your proof of purchase.
Support and Contact
For technical assistance, product inquiries, or support regarding SpeedSet Professional Rapid Setting Thinset Tile Mortar, please contact Custom Building Products directly. Their official website typically provides contact information, technical data sheets, and frequently asked questions.
Note: Always follow local building codes and industry best practices when installing tile.





