Sikafloor® UEF Base System
APPLIED AT 1/8" - 3/16" ( 3.1 - 4.7 mm)
Sikafloor® UEF Base System creates a moisture vapor tolerant barrier between the concrete substrate and finished Sikafloor System that consists of a selfleveling, three component, cementitious polyurethane either finished smooth or broadcast to rejection with Sikadur aggregate. Sikafloor® UEF Base System can also be used to accelerate the installation schedule on projects. The self- leveling polyurethane is installed smooth or with a broadcast and seal coat. The system then serves as a work surface during the build out phase of the project. Once the preceding trades are complete, the floor is cleaned, prepared and the finished Sikafloor System installed.
- Can be applied on green concrete (typically 7 -10 days) after preparation (see surface prep section) and where substrate has tensile bond strength in 3626 psi (25 MPa) with a minimum pull off strength of 218 psi (1.5 MPa).
- Can be applied to concrete when moisture content of concrete substrate must be > 4% by mass (pbwpart by weight) as measured with Tramex CMC/CMEpert type concrete moisture meter.
- Can be applied to concrete substrates where <100% relative humidity is measured as per ASTM F2170.
- Similar coefficients of thermal expansion to concrete allowing movement with the substrate through normal thermal cycling. It will perform and retain its physical characteristics through a wide temperature range from -40°F (-40°C) up to 248°F (120°C).
- It may be applied as soon as the concrete can be prepared. Extra expansion joints are not necessary; maintain and extend existing expansion joints through the Sikafloor® UEF Base System.
- Behaves plastically under impact / deforms but will not crack or debond achieves highest performance ratings according to ASTM G21 resistance to fungi and ASTM D3273 resistance to mold growth.
- Meets the requirements of USDA for use in food plants.
- Non-tainting, odorless.
Usage
The Sikafloor Systems listed below may be installed over Sikafloor® UEF Base System. Contact Sikafloor Technical Services for any system not listed.- Sikafloor MultiDur Systems
- Sikafloor DecoDur Systems
- Sikafloor ESD Systems
- Sika ComfortFloor Systems
Advantages
- Can be applied on green concrete (typically 7 -10 days) after preparation (see surface prep section) and where substrate has tensile bond strength in 3626 psi (25 MPa) with a minimum pull off strength of 218 psi (1.5 MPa).
- Can be applied to concrete when moisture content of concrete substrate must be > 4% by mass (pbwpart by weight) as measured with Tramex CMC/CMEpert type concrete moisture meter.
- Can be applied to concrete substrates where <100% relative humidity is measured as per ASTM F2170.
- Similar coefficients of thermal expansion to concrete allowing movement with the substrate through normal thermal cycling. It will perform and retain its physical characteristics through a wide temperature range from -40°F (-40°C) up to 248°F (120°C).
- It may be applied as soon as the concrete can be prepared. Extra expansion joints are not necessary; maintain and extend existing expansion joints through the Sikafloor® UEF Base System.
- Behaves plastically under impact / deforms but will not crack or debond achieves highest performance ratings according to ASTM G21 resistance to fungi and ASTM D3273 resistance to mold growth.
- Meets the requirements of USDA for use in food plants.
- Non-tainting, odorless.
Packaging
Please refer to the individual Product Data Sheet
Color
Available in standard PurCem colors
System Details
System Structure
Sikafloor® UEF Base System ~ 1/8" - 3/16" ( 3.1 - 4.7 mm)
| Description | Products | Thickness mils | ||||
|
Body Coat | Sikafloor®-22 NA PurCem + Sikadur®- 508 Aggregate | 1/8"- 3/16" | ||||
|
Options | ||||||
| Primers | Sikafloor®-31 NA PurCem
Sikafloor®-2570 | 15 - 20
3 - 5 | ||||
| Scratch Coat |
| 40 - 60 | ||||
|
Body Coat | Sikafloor®-24 NA PurCem + Sikadur®- 508 Aggregate |
120 - 160 | ||||
| Top Coat | Sikafloor®-31 NA PurCem | 15 - 20 |
* Primer/Scratch coat required If applied with a smooth finish, and
optional for broadcast system.
Nominal thickness
1/8" - 3/16" ( 3.1 - 4.7 mm)
Minimum thickness
1/8" ( 3.1 mm)
Volatile organic compound (VOC) content
Please refer to the individual Product Data Sheets.
Shelf Life
Please refer to the individual Product Data Sheet
Storage Conditions
Please refer to the individual Product Data Sheet
Water Absorption
| 0.10% | ASTM C413 at 73°F (23°C) and 50% R.H |
Shore D Hardness
| 83 | ASTM D2240 at 73°F (23°C) and 50% R.H |
Abrasion Resistance
| CS-17/1000 cycles/1000 g -0.07 g loss H-22/1000 cycles/1000 g -0.24 g loss | ASTM D4060 73°F (23°C) and 50% R.H |
Indentation
| ~ 0% | MIL -PRF -24613 at 73°F (23°C) and 50% R.H |
Compressive Strength
| 6,961psi (48 MPa) 28 days | ASTM 579 73°F (23°C) and 50% R.H |
Tensile Strength
| 1,290 psi (8.9 MPa) | ASTM C307 at 73°F (23°C) and 50% R.H |
Flexural Strength
| 2,726 psi (18.8 MPa) | ASTM C580 at 73°F (23°C) and 50% R.H |
Chemical Resistance
Please consult Sikafloor Technical Services.
Microbiological Resistance
| Resistance to Fungi Growth Rated 0 (no growth) | ASTM G21 at 73°F (23°C) and 50% R.H |
| Resistance to Mold Growth Rated 10 (highest resistance) | ASTM D3273 at 73°F (23°C) and 50% R.H |
Thermal Conductivity
| Pass | ASTM C884 at 73°F (23°C) and 50% R.H |
Coefficient of Friction
| 3.02 x 105 in/in/°F | ASTM D696 at 73°F (23°C) and 50% R.H |
Application
Ambient Air Temperature
Minimum/Maximum 40˚/85˚F (4˚/30˚C)
Substrate Temperature
Minimum/Maximum 40˚/85˚F (4˚/30˚C)
Coverage
| Description | Products | Approximate Sq.Ft./kit | ||||
|
Body Coat | Sikafloor®-22 NA PurCem Sikadur®- 508 Aggregate | 31@3/16" 100 sq.ft. per bag | ||||
|
Options | ||||||
|
Primers | Sikafloor®-31 NA PurCem
Sikafloor®-2570 | 224@15mils
2,667@3mils | ||||
| Scratch Coat | Sikafloor®-24 NA PurCem | 215@40mils | ||||
|
Body Coat | Sikafloor®-24 NA PurCem Sikadur®- 508 Aggregate | 107@80mils 100 sq.ft. per bag | ||||
| Top Coat |
| 224@15mils |
SUBSTRATE PREPARATION
Concrete surfaces must be clean and sound. Remove all dust, dirt, existing paint films, efflorescence, exudates, laitance, form oils, hydraulic or fuel oils, brake fluid, grease, fungus, mildew, biological residues or any other contaminants which may prohibit a good bond.
Prepare the surface by any appropriate mechanical means, in order to achieve a profile equivalent to ICRI - CSP 3-6. The compressive strength of the concrete substrate should be at least 3,625 psi (25 MPa) at 28 days and a minimum of 218 psi (1.5 MPa) in tension at the time of application.
Repairs to cementitious substrates, filling of blowholes, leveling of irregularities, etc. should be carried out using an appropriate Sika profiling mortar. Contact Sika Technical Service for a recommendation.
Edge Terminations
All free edges of a Sikafloor PurCem floor, whether at the perimeter, along gutters or at drains, require extra anchorage to distribute mechanical and thermal stresses. This is best achieved by forming or cutting grooves in the concrete. Grooves should have a depth and width of 2 times thickness of the Sikafloor PurCem floor. Refer to the edge details provided at http://usa.sika.com.
If necessary, protect all free edges with mechanically attached metal strips. Do not featheredge, always turn into an anchoring groove.
Expansion Joints
Expansion joints should be provided in the substrates at the intersection of dissimilar materials. Isolate areas subject to thermal stresses, vibration movements, or around load-bearing columns and at vessel sealing rings. Refer to details provided at http://usa.sika.com.
Priming
Please refer to the individual Product Data Sheet for each component.
MIXING
Please refer to the individual Product Data Sheet
APPLICATION
Please refer to the individual Product Data Sheet