MC Epoxy, and UltraSpartic are clear or pigmented, high-solids, resinous floor coatings. MC Epoxy is used as primer coat and body coat where chip and quartz granules are broadcast into them. Epoxies are predominantly finished with the UltraSpartic high-solids urea coatings, but in some cases finished with IMPACT water-based urethane (gloss or matte finish). MC Epoxy, and UltraSpartic are packaged in both 3-gallon and 15-gallon kits. IMPACT is packaged in 1-gallon “Contractor Kits” and 3-gallon “Bulk Kits”.
Concrete must be cured 30 days, structurally sound and free of contaminants including but not limited to waxes, loose paint, dust, dirt, grime, oils, release agents, curing compounds, and any surface laitance (a layer of weak and non-durable material). Concrete should be shot-blasted, or diamond ground to achieve a profile. For coating applications from 4–5 mils in thickness, the surface profile shall be a CSP 3, also known as a light shot blast. For coating applications from 15–50 mils in thickness, the surface profile shall be a CSP 4 or 5, also known as a medium shot blast. All substrates must be properly prepared by trained and experienced contractors or maintenance personnel.
MOISTURE VAPOR EMISSIONS PRECAUTIONS
All interior concrete floors not poured over an effective moisture vapor retarder are subject to possible moisture vapor transmission that may lead to blistering and failure of the coating system. It is the coating applicator’s responsibility to conduct calcium chloride and relative humidity probe testing to determine if excessive levels of vapor emissions are present before applying any coatings. A moisture test should be performed resulting in a maximum MVT rate of 3 pounds per 1000 Sq. Ft. in 24 hours. UDT can supply moisture remediation products and information. Consult your UDT representative for more information. UDT and its representatives or sales agents will not be responsible for coating failures due to undetected moisture vapor emissions.
a. Calculate area of surface(s) to be coated. Surface area example: 20’ x 50’ = 1000’ Sq. Ft.
5 mils = 320 Sq. Ft. per gallon
10 mils = 160 Sq. Ft. per gallon
20 mils = 80 Sq. Ft. per gallon
Patch: Patch uneven surfaces, cracks and expansion joints with UDT Epoxy Patch Kit. See instructions.
Primer: While a primer coat is optional on broadcast systems, UDT recommends a thin primer coat of pigmented MC Epoxy to minimize bubbles caused from concrete outgassing and ensure optimal adhesion to the concrete surface. Apply UDT MC Epoxy in a temperature-controlled environment (40-80°F). Mix according to mixing instructions and reduce with 10% xylene for the primer coat. Immediately pour all mixed contents onto the floor and spread with a flat trowel, flat or 5 mil squeegee within 15 minutes, at a coverage of 250-350 Sq. Ft. per gallon. Back-rolling with a 1/4”-3/8” nap roller is optional if using a flat squeegee, but may pull epoxy out of small holes and pits yielding rougher surface. Always back roll if using a notched squeegee. UDT MC Epoxy dries in 4 hours. Never exceed the stated recoat window of each product.
Body Coat: Between 4 and 8 hours after the primer coat was applied (or within the recoat window of the chosen system), proceed to apply the body-coat of UDT MC Epoxy. Wear “spiked” shoes while walking on wet material. Mix only the amount of material that can be applied in 15 minutes or less. Immediately pour product out in a strip on the floor. Spread material with a 10-mil notched squeegee to a coverage of 100-160 Sq. Ft. per gallon (10-16 mils). Back-roll with a short ¼” nap roller to achieve an even surface texture. Minimize roller marks by rolling from wall to wall without lifting the roller in the middle of the floor. Allow body coat to cure for 4-8 hours. Termination points should be made at doorways, joints, etc. If it is not possible to terminate at these points, 2″ masking tape should be placed in a straight line at the ending point. Carefully spread the material up to and slightly over the inside edge of the tape. Allow material to cure for roughly thirty (30) minutes and then remove the tape. Complete back-rolling within 15 minutes. Mixed material left in the pail longer than 5 minutes will have an accelerated reaction and reduced working time. Never exceed the stated recoat window prior to the top coat application.
Top Coat Application: Apply a top coat of UltraSpartic. Wear “spiked” shoes while walking on wet material. Mix only the amount of material that can be applied in 20 minutes or less. Immediately pour product out in a strip on the floor. Spread UltraSpartic with a 5 or 10 mil squeegee and back-roll with a 3/8” nap roller to achieve an even surface texture. Minimize roller marks by rolling from wall to wall without lifting the roller in the middle of the floor. Allow UltraSpartic to dry for 8 hours for foot traffic and 3 days for vehicle traffic or parking.
IMPACT may be used as a thin-film, water-based alternative to UltraSpartic as a top coat or as a re-coat/maintenance coat in future applications. Refer to IMPACT instructions for preparation, mixing, and application procedures.