314 ReadySet Premixed Mastic Adhesive
Ceramic tile mastic · US · manufacturer-sourced
How long before you can grout over Henry 314 ReadySet Premixed Mastic Adhesive?
Short answer
Return-to-use gates
Walk, furniture and full traffic open at different times
- Apply the Ceramic tile mastic to a clean, dry subfloor
- Stay off until the foot-traffic time
- Bring in furniture and heavy use later
This product’s stated stages Quoted at 73°F
- Working time ends30–50 minutes
- Ready for grout1–2 days
Worth noticing: Working time is only 30–50 minutes; the next stated stage, ready for grout, is 1–2 days.
Common mistake: Moving furniture back the day after, while the surface is still soft.
Return-to-use gates
Open the surface gradually instead of treating cure as one moment
Time returning to use
Your countdown
Stated times
- Working time ends30–50 minutes
- Ready for grout1–2 days
From Henry data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.
Manufacturer website: henry.com
Conditions & fine print
- Stated conditions: 73°F (23°C)
- Floor times assume the stated temperature and humidity. Cold slabs, thick coats and damp subfloors lengthen them. Follow the current data sheet.
- Region US. Formulas can differ between countries; check your container.
- Working time ends: Times vary with temperature and humidity.
- Ready for grout: The marketing text says grout in 24 hours, which conflicts with the floor requirement.
- Entered from the cited manufacturer documentation. Check the current label for the exact formula and region. Report outdated information
- Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.
Confirm this is your product
Closely named formulas, colors and regional versions can use different times. Match these details to your container before starting a countdown.
- Exact listing
- Henry 314 ReadySet Premixed Mastic Adhesive
- Variant
- Ceramic tile mastic
- Region
- US
- Listed use
- ceramic wall tile, ceramic floor tile
- Timed stages recorded
- tooling, grout ready
- Source checked
- 2026-10-25
Documentation: Technical data sheet · Data sheet HT148, 09/17/2012
Condition attached to the stated time: Times vary with temperature and humidity.
About this product
A ceramic tile mastic from 2012 whose open time depends on the substrate, 30 minutes over concrete and 40 to 50 over other approved ones, and whose grout wait is 24 hours on walls and 48 on floors. The marketing line says grout in 24 hours, which the data sheet contradicts for floors.
Using this specific product
Henry 314 ReadySet Premixed Mastic Adhesive is listed here as the Ceramic tile mastic version for ceramic wall tile and ceramic floor tile. For installing or finishing a floor, the useful question is not simply whether the surface looks finished—it is whether the exact next-action milestone shown above has been reached.
Before you start
- Confirm the package says Ceramic tile mastic; related versions can use different timing.
- For ceramic wall tile and ceramic floor tile, pay particular attention to subfloor condition, trowel coverage, room temperature and traffic plan.
- Times vary with temperature and humidity. The marketing text says grout in 24 hours, which conflicts with the floor requirement.
How to check readiness
Test the least-ventilated area before walking, covering or replacing furniture. The data sheet says to spread only what can be covered in 30 minutes over concrete, or 40 to 50 minutes over other approved substrates. The data sheet says the adhesive must set 24 hours on walls and 48 hours on floors before grouting.
Avoid this mistake
Foot traffic, furniture and rugs can have different return times.
Compare with similar products
- Compare with LATICRETE 15 Premium MasticReady for grout: 1 day to 2 days there, 1 day to 2 days here.
- Compare with MAPEI Ultramastic 5Ready for grout: 12 h to 1 day there, 1 day to 2 days here.
Questions
How long before you can grout over this product?
Henry states: The data sheet says to spread only what can be covered in 30 minutes over concrete, or 40 to 50 minutes over other approved substrates. Conditions: Times vary with temperature and humidity.. The data sheet says the adhesive must set 24 hours on walls and 48 hours on floors before grouting. Conditions: The marketing text says grout in 24 hours, which conflicts with the floor requirement.. These are the manufacturer’s stated times, not a guarantee.
Can I grout floor tile after 24 hours with 314 ReadySet?
The data sheet says the adhesive must set 24 hours on walls and 48 hours on floors before grouting. The marketing text says grout in 24 hours, which conflicts with the floor requirement.
How long do I have to work with this product?
Henry states: The data sheet says to spread only what can be covered in 30 minutes over concrete, or 40 to 50 minutes over other approved substrates. Conditions: Times vary with temperature and humidity.. These are the manufacturer’s stated times, not a guarantee.
What affects how long this product takes to dry or cure?
Floor times assume the stated temperature and humidity. Cold slabs, thick coats and damp subfloors lengthen them. Follow the current data sheet. Follow the product label for your conditions.