Do I need expansion joints?
/When a large area of epoxy grout is poured, it is recommended to install expansion joints to reduce the possibility of the grout cracking.
How often should I install expansion joints?
/It is recommended that expansion joints be installed every 4 to 6 feet.
What is the purpose of an expansion joint?
/The purpose of an expansion joint is to engineer a controlled crack in the epoxy grout to reduce the possibility of random cracking, when machinery to grout temperature differentials of 50°F are encountered.
How wide should I cut expansion joints?
/An expansion joint should be one half inch to an inch wide.
How do I maintain expansion joints?
/Make sure the top of the expansion joint is sealed with an expansion joint material, elastic epoxy seam sealant or silicone caulk capable of expanding.
What type of material should I use to fill an expansion joint.
/You can fill an expansion joint with silicone caulk, however it is recommended to use an elastic epoxy seam sealant after the grout is fully cured, such as Chockfast Expansion Joint material.
How do I seal expansion joints?
/After the grout is cured, remove about a half inch of the expansion joint material and seal the top with an elastic epoxy seam sealant such as Chockfast Expansion Joint material.
What is an expansion joint sealant?
/Expansion joint sealant is an elastic epoxy seam sealant such as Chockfast Expansion Joint material.
Are expansion joints necessary?
/When a large area of epoxy grout is poured, it is recommended to install expansion joints to reduce the possibility of the grout cracking.
What if don’t install expansion joints?
/If you do not install expansion joints on a large enough grout pour, the grout is more likely to crack. This does not mean it has failed, however, you need to fill the crack to prevent any liquids from reaching the foundation.
What materials can I use for expansion joints?
/Expansion joints should be made one half inch to one inch thick of a closed-cell neoprene foam rubber or polystyrene.
Do I need to seal the expansion joint to the prepared foundation?
/It is recommended that the expansion joint be sealed to the top of the prepared foundation with a silicone caulk (RTV).
What can I use to seal the expansion joint to the prepared foundation?
/Generally, the expansion joint is sealed to the prepared foundation with a silicone caulk (RTV).
Does the expansion joint need to extend into the concrete foundation?
/The expansion joint is generally installed on top of the concrete foundation and below the base plate within the area where the epoxy grout will be poured.
Can a crack form next to an expansion joint?
/Yes, a crack can occur next to an expansion joint, this does not mean the gout has failed, however, you will need to seal up that crack with expansion joint material or a silicone caulk (RTV) to prevent liquids from getting to the foundation.
What do I do when I get a crack in the epoxy grout?
/When you get a crack in the epoxy grout you will need to seal up the crack with expansion joint material or a silicone caulk (RTV) to prevent liquids from getting to the foundation.
