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• Features & Benefits
• Subfloor Preparation
• Priming
• Mixing
• Application
• Substrates

Features & Benefits

• Specifically designed for use over a wide variety of subfloors including:
  • Concrete, sand & cement
  • Calcium sulphate/anhydrite/hemihydrate screeds
  • Flooring grade plywood
  • Rigid steel
  • Damp proof membranes
  • Underfloor heating systems
  • As a finished wear surface
• UFH compatible
• Low odour
• Floor coverings can be applied to internal subfloors in as little as 1 hour (45 minutes when installing carpet) and resin finishes after 24 hours
• Protein free formulation means that it can be used in biologically sensitive areas

UltraFloor Level IT Super Flex 30 is not a moisture tolerant formulation, therefore it is not suitable for the pre-smoothing of subfloors prior to the application of a surface damp proof membrane (DPM) or a moisture vapour suppressant (MVS). It is also not suitable for applications where a damp proof course (DPC) is not present within the integrity of the building.

Subfloor Preparation

• All surfaces must be dry and in a sound and stable condition free from contaminants that may prevent adhesion such as dust, oils, grease, surface laitance, water soluble adhesive residues and weak smoothing underlayments etc.
• Smooth dense surfaces must be roughened by mechanical scabbling to enhance the key
• Subfloors should be tested in accordance with BS8203 to ensure a moisture reading of less than 75% RH is achieved. Where this has not been attained or where there is uncertainty that the subfloor design incorporates a DPC then UltraFloor DPM IT or UltraFloor Suppress IT must be applied (see relevant UltraFloor product technical datasheet)
• UltraFloor recommend consultation with subfloor preparation equipment suppliers to ensure correct equipment for the substrates is selected
• All substrates must be at a minimum temperature of 5°C before, during and after application of the primer to ensure film forming and bonding is achieved

Priming

Absorbent Subfloors (concrete, sand & cement, plywood etc): Prime with UltraFloor Prime IT Multi-surface Primer (MSP) apply first coat typically diluted 3 parts water, 1 part primer and allow to fully dry (usually 1-2 hours). Apply a second coat diluted 1:1 with clean water allowing it to dry to a pink film (1-2 hours). On highly porous substrates a third coat may be required diluted at 1:1 and allow to fully dry.

Non-absorbent Subfloors (power floated concrete, epoxy resin, damp proof membranes, steel mezzanine decks and access panels): Priming with UltraFloor Prime IT MSP is required when applying UltraFloor Level IT Super Flex 30 onto non-absorbent or dense substrates. Apply one coat neat and allow to fully dry (usually 1-2 hours).

Mixing

• Shake the pre-gauged bottle of liquid prior to opening
• Pour the entire contents of the liquid into an oversized bucket (20 litres or more capacity)
• Gradually add the powder whilst continually mixing using an electric drill fitted with a power whisk, suitable for use with cement materials
• After completely adding the powder, continue mixing for a further 2 minutes, keeping the whisk below the surface of the product to minimise air entrainment, until a lump free creamy material is attained
• UltraFloor Level IT Super Flex 30 should only be mixed as single units
• Do not add further liquid or water

Application

• Pour onto the floor and spread with a smooth edge steel trowel
• UltraFloor Level IT Super Flex 30 has exceptional flow characteristics, a spiked roller may be used to further improve the finish particularly between adjacent units of product. Only spike roll whilst the product is still in its fluid state (immediately due to the limited workability and rapid setting nature)
• All curing and drying times are based on good site conditions i.e. an air temperature of 20o C, air humidity of 65% RH and good ventilation. Sites that are cold, humid or damp or in areas where the airflow is poor, will prolong drying and curing times, so allowances should be made accordingly. Applications to non-absorbent substrates and at thicker application depths will take longer to dry
• UltraFloor Level IT Super Flex 30 is ready to receive light foot traffic normally after 30 minutes based on a 3mm thick application

NOTE: Avoid strong drafts and direct sunlight during curing.

Coverage Rates:

Substrates

Power Floated Concrete: Should be treated as non-porous. Mechanically abrade (shotblast or scarify) to remove surface hardeners and expose the cement/aggregate. Apply UltraFloor Prime IT MSP neat in a thin uniform coating, allowing it to dry fully (usually 1-2 hours).

Existing Sand & Cement Screeds and Smoothing Compounds: These should be strong enough for an application of UltraFloor Level IT Super Flex 30. Weak, friable or damaged screed should be uplifted and repaired. UltraFloor Level IT Super Flex 30 can be used over most intact cementitious compounds. Remove adhesive residues and treat as an absorbent floor. Apply UltraFloor Prime IT MSP diluted 3:1 with clean water and allow to dry fully (1-2 hours). Apply a second coat diluted 1:1 with clean water allowing it to dry to a pink film (1-2 hours).

NOTE: Application is only suitable on subfloors that are in equivalent strength to UltraFloor Level IT Super Flex 30.

Calcium Sulphate/Anhydrite/Hemihydrate Screeds: Mechanically remove any laitance and provide a sound, clean, dry and dust-free surface. The relative humidity within the subfloor must read below 75% RH prior to the application of a barrier primer (damp proof membranes or moisture vapour suppressants are not recommended). These types of screeds often incorporate warm water underfloor heating systems (see relevant manufacturers’ technical datasheet) which can be used, along with dehumidifiers, to speed up the drying process. Manufacturers normally suggest this can be conducted after 7 days minimum curing. Apply UltraFloor Prime IT MSP diluted 3:1 with clean water and allow to fully dry overnight. Apply a second coat diluted 1:1 with clean water allowing it to dry to a pink film (usually 1-2 hours).

Non-flexing Steel Floors (e.g. mezzanine decks): Mechanically abrade using a suitable mechanical machine (STG or shot blast) or a wire brush to give an abraded shiny corrosion free surface and remove all excess traces of metal.

Flooring Grade Plywood: UltraFloor Level IT Super Flex 30 is suitable for use over many plywood substrates provided the plywood is mechanically fixed and of suitable thickness. Normally Plywood that has been in-situ for many years will be stable and suitable for application. Newly installed flooring grade plywood (e.g. SP101) must be mechanically fixed to a sound strong base.

Patching prior to Plywood Overlays: Sound stable subfloors including T and G floor boards that are to be overlayed with flooring grade plywood may first be smoothed or patch filled with UltraFloor Level IT Bond.

Surface DPM and MVS: These are considered as non-absorbent substrates. Applications should be carried out within 12 hours of UltraFloor DPM IT and/or UltraFloor Suppress IT application (see relevant UltraFloor product technical datasheets).

Radiant Electrical Underfloor Heating Systems: Cables must be secured to a sound strong mechanically fixed cement faced backer board. It may also be used where electrical underfloor heating is used over cementitious or calcium sulphate subfloors (see calcium sulphate screed section). In all cases UltraFloor Level IT Super Flex 30 must be applied at a thickness of 5mm above the cables for resilient, textile and timber applications and a minimum of 3mm for application of stone, ceramic or porcelain products.

Warm Water Underfloor Heating Systems (UFH): Where UFH systems are incorporated, they must have been fully commissioned and brought up to their maximum temperature, and ideally switched off 48 hours before application. In the absence of other heat sources, the UFH may be set to ‘cutback’ position to achieve an air temperature of 15oC. Any expansion or movement joints must be carried through to the finished floor surface.