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

Features & Benefits

• Specifically designed for use over a wide variety of subfloors including:
  • Concrete
  • Sand & cement
  • Calcium sulphate/anhydrite/hemihydrate screeds
  • Existing cementitious underlayments
  • Damp proof membranes
  • Surface electrical radiant heating systems
• Foot traffic in as little as 2.5 hours
• Ready to receive floor coverings after 8 hours
• Use over most common subfloors
• UFH compatible
• Low odour 
• Decorative permeable floor coverings such as open backed carpets can be applied to the internal subfloors in as little as 8 hours after application
• Impervious floor coverings such as sheet vinyl and tiles can be applied after 10 hours
• Moisture tolerant formulation makes it suitable for the pre-smoothing of floors prior to the application of surface damp proof membranes (DPM) and moisture vapour suppressants (MVS)
• Protein free formulation means that it can be used in biologicallly sensitive areas
• CE certified

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 should be 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 and existing smoothing underlayments):

• Prime with UltraFloor Prime IT Multi-surface Primer (MSP) typically diluted 3 parts water, 1 part primer and allow to fully dry
• 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

NOTE: To ensure a pinhole free surface is attained priming can be carried out using UltraFloor Prime IT MSP. Specific priming requirements are needed for calcium sulphate/anhydrite/hemihydrate screeds (see Substrate section - Calcium Sulphate/Anhydrite/Hemihydrate Screeds).

Non-absorbent Subfloors (power floated concrete, epoxy resin and damp proof membranes):

• Priming with UltraFloor Prime IT MSP is required when applying UltraFloor Level IT Two onto non-absorbent or dense substrates
• Apply one coat neat and allow to fully dry

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 Two 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 Two 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.

NOTE: Avoid strong drafts and direct sunlight during curing. UltraFloor Level IT Two is ready to receive light foot traffic normally after 2.5 hours based on a 3mm thick application.

Tools should be thoroughly cleaned in water to remove excess materials immediately after use.

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).

Tamped or Pan Floated Concrete:

These should be treated as porous, and any laitance or weak material should be mechanically removed to ensure a sound, dry and dust-free surface. Apply UltraFloor Prime IT MSP diluted 3:1 with clean water and allow to dry fully (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).

Sand/Cement Screeds:

These should be strong enough for an application of UltraFloor Level IT Two. Weak, friable or damaged screed should be uplifted and repaired. Apply UltraFloor Prime IT MSP diluted 3:1 with clean water and allow to dry fully (usually 1-2 hours). Two-coat primer application may be required for very absorbent screeds.

Existing Smoothing Underlayments:

UltraFloor Level IT Two can be used over most intact cementitious cement underlayments. 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 Two.

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).

Pre-smoothing:

UltraFloor Level IT Two can be used to on cementitious subfloors with residual moisture >75%RH to pre-smooth prior to applying an UltraFloor epoxy DPM. Prepare the subfloor to leave a lightly textured dust free surface. Either prime with UltraFloor Prime IT MSP diluted 3:1 with clean water and allow to fully dry or lightly dampen with clean water, allowing the surface to matt off. This will reduce pinholing.

NOTE: Pre-smoothing of subfloors where there is an absence of a base DPM can be carried out provided there is no risk of hydrostatic pressure and all previous materials have been removed to leave the cementitious base. If in any doubt always apply the DPM directly to the original subfloor.

Surface DPM and MVS:

These are considered as non-absorbent substrates. Applications should be carried out within 12 hours of Ultra Floor 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 Two 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 15o C. Any expansion or movement joints must be carried through to the finished floor surface.