FAQ

Question: What is the best way to apply Fusion Pro?
Answer: Begin with clean, lightly damp tile. Grout for 3-4 minutes, or until the Fusion Pro starts to tack up, filling
joints completely full, then begin cleaning immediately. Use a lightly damp grout sponge with a circular
motion, making sure not to wash out the grout joints. Keep rinse water fresh and clean, but do not allow
any water to puddle on the tile or grout. Follow by dragging a lightly damp sponge and then a lightly
damp microfiber towel diagonally across the tile.
Question: Is Fusion Pro difficult to clean after installation like epoxy and urethane grouts?
Answer: No. Cleaning up Fusion Pro is easy. The level of effort required is similar to a cement-based grout.
Unlike other grout products, you start cleaning immediately after grouting with Fusion Pro.
Question: Do I need any cleaning additive to my wash water when installing Fusion Pro?
Answer: No. Cleaning additives are not required for your initial or final cleaning.
Question: I plan to use Fusion Pro on natural stone and porous tile. Do I need to do any prep work?
Answer: Yes. Ensure that your tiles are pre-sealed and allow the sealer to fully dry before applying Fusion Pro.
Sealers such as AquaMix
®
Grout Release or Sealer’s Choice Gold
®
or TileLab
®
SurfaceGard
®
Sealer have
been tested for compatibility and are highly recommended for use with Fusion Pro. If you use a grout
release / sealer not made by CUSTOM, first test that product in advance for compatibility or call CUSTOM
Technical Services.
Question: When can Fusion Pro be exposed to traffic?
Answer: Fusion Pro can be exposed to light foot traffic after 24 hours. For
heavier foot traffic, allow at least 72 hours.
Question: How long does it take for Fusion Pro to fully cure?
Answer: Fusion Pro develops its hardness in typical installation environments
over seven days. At the end of three days, Fusion Pro and cement
grouts demonstrate a similar hardness.
Question: How long does Fusion Pro
®
need to cure before it can be
exposed to water?
Answer: Typically, Fusion Pro needs three days to dry before it can be
exposed to water.
Question: At what temperature can Fusion Pro be installed?
Answer: Fusion Pro is designed to be installed at temperatures between 50°F and 90°F.
Question: Can Fusion Pro be installed outdoors in inclement weather?
Answer: If inclement weather is expected, protect the area where Fusion Pro is being or has been installed.
To guard against rain or moisture, tent the area at least 12 inches above the floor.
Question: Can Fusion Pro be covered on a job site once applied?
Answer: Fusion Pro can be covered on a jobsite, but it must be done with breathable craft paper or a similar
breathable material. Fusion Pro cures by evaporation so any covering may increase the time needed to
cure and the use of non-breathable coverings may halt the curing process and weaken the grout.
Question: How will temperature and humidity impact curing time for Fusion Pro?
Answer: Warmer and drier weather will decrease the amount of time needed for cure whereas cooler and
more humid environments will extend the cure time.
Question: Can I install Fusion Pro in a shower over a fresh mud bed?
Answer: Yes, you can install Fusion Pro over a mud bed that has cured and shows a dry surface, which typically
takes about 3 days. Do not allow any water to spill or saturate the bed prior to the grouting process.
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