P02.01
MavClad — epoxy mortar
The 100% solids epoxy mortar system for high-abuse floors — heavy manufacturing, machine shops, warehouse walk lanes, and integral cove. Knowing where epoxy mortar does not belong matters more than knowing where it does.
- Separate the silica-aggregate and iron-aggregate variants
- State the three environments where epoxy mortar is the wrong call
- Explain thermal-shock failure in terms a plant engineer will accept
Where epoxy mortar earns its keep
MavClad is one of Maverick's two main system lines — the 100% solids epoxy mortar system that builds the floor itself, with coatings and sealers going over it. It is specified for high-abuse floors: heavy manufacturing, machine shops, warehouse walk lanes, and integral cove work. It installs at 3/16 to 1/4 inch troweled. The base MavClad EM uses graded silica sand; **MavClad EIF** is the epoxy iron-filled mortar system, substituting iron shot when impact and abrasion are the primary driver. The iron-filled idea carries across to the other main line: **MavCrete UIF** is the urethane cement iron-filled mortar, pairing the thermal-shock tolerance of urethane cement with iron aggregate for the hardest floor of that type. Read the letters and you have the binder: EIF is Epoxy Iron-Filled and lives in MavClad; UIF is Urethane Iron-Filled and lives in MavCrete. There is no MavClad UIF.
Say it out loud, then check yourself
- 01Give two reasons epoxy mortar fails under thermal shock.
First, epoxy resin has a much higher coefficient of thermal expansion than concrete, so repeated hot-cold cycling puts high shear at the bond line. Second, epoxy mortar cures to a rigid matrix and lacks the flexibility to accommodate substrate movement. The result is cracking and delamination.
- 02A crew primed MavClad EM with SLE. At 8 hours the primer is still fingertip-tacky. Defect or next step?
Normal next step. The mortar goes over a fingertip-tacky primer — that tacky window is the correct condition for a chemical bond between primer and mortar. Proceed. If the primer had blushed white or cured hard, that would be the defect.
- 03Name three environments where MavClad EM is the wrong choice.
Blast freezers or thermal-shock zones; green or high-moisture concrete; outdoor or UV-exposed floors.
Takeaways
- EM uses graded silica sand. EIF substitutes iron shot when impact and abrasion lead.
- Epoxy mortar fails on thermal shock, green or wet slabs, and outdoors. Those three send you to MavCrete.
- A fingertip-tacky primer under a mortar is the correct condition, not a defect.

