Quick Links - Click To Jump To Section:

• Features & Benefits
• Surface Preparation
• Priming
• Substrates
• Application

Features & Benefits

• For use over a wide variety of subfloors including:
  • Concrete, sand, cement, rigid steel
  • Calcium sulphate/anhydrite/hemihydrate screeds 
  • Damp proof membranes, surface electrical radiant heating systems
  • Flooring grade plywood, flooring grade asphalt
  • Porcelain, ceramic, quarry or terrazzo floors
  • Existing cementitious underlayments, moisture tolerant adhesive residues 
• Decorative floor coverings can be applied to the internal subfloors in as little as 4 hours after the application
• Protein free formulation means it is ideal for use in biologically sensitive areas
• 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)
• Due to its excellent adhesion characteristics it can be used on most common substrates without the need to prime

Surface 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 can be roughened by mechanical scabbling to enhance the key. Subfloors should be tested in accordance with BS 8203 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 Damp Proof Course (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.): 

Priming is not required for the purpose of adhesion.

To ensure a pinhole free surface is attained priming can be carried out using UltraFloor Prime IT Multisurface Primer (MSP), where this is not important such as applications of textiles or loose lay laminate flooring, priming may be omitted.

Subfloors must be sound, stable, free from dust, grease and all debris. Any remaining residues should be firmly bonded, hard and not soluble to water.

Specific priming requirements are needed for calcium sulphate/anhydrite/hemihydrate screeds (see Substrate section below).

Non-absorbent Subfloors (epoxy resin damp proof membranes, moisture tolerant adhesive residues, flooring grade asphalt, porcelain, ceramic, quarry and terrazzo floors, steel mezzanine decks, access panels etc):

Priming is not required for the purpose of adhesion, it is also not required with applications to UltraFloor DPM IT or UltraFloor Suppress IT as long as UltraFloor Level IT Multi Pro is applied within 12 hours of application and it is trafficable.

Substrates

Old Adhesive Residues:

On cementitious substrates with old adhesive residues, ensure the residues are non-water soluble. Thin, hard residues can be left, as long as the surface is sound, clean, dry and dust free.

Where the subfloor is porous, prime as per an absorbent subfloor. Where adhesive residue remains, treat as non-porous.

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 and 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).

Flooring Grade Asphalt:

New asphalt must be left for a minimum of 7 days and degreased to remove surface bloom. Existing asphalt should be assessed for cracks. If cracks are present they need to be repaired to give a continuous strong subfloor. The use of epoxy resins bulked out with sand is normally sufficient.

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 Multi Pro 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 floorboards that are to be overlayed with flooring grade plywood may first be smoothed or patch filled with UltraFloor Level IT Multi Pro.

Pre-smoothing of Subfloors:

Where there is an absence of a DPC pre-smoothing 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, please apply UltraFloor DPM IT (see relevant UltraFloor product technical datasheet) directly to the original subfloor.

Pre-smoothing is not suitable over old adhesive residues.

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 Multi Pro 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.

Application

Pour onto the floor and spread with a smooth edge steel trowel. UltraFloor Level IT Multi Pro 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, typically up to 10 minutes after application.

Coverage Rates:

Coverage is for guidance only based on a smooth, non-absorbent subfloor. Substrate texture and absorbency can affect consumption variations. As with all raw materials, colour variation may occur. Please note that this does not affect the consistency or characteristics of the product.

Curing & Drying

All curing and drying times are based on good site conditions i.e. an air temperature of 20°C, air humidity of 65% RH and good ventilation.

Cold, humid or damp sites, or those with poor airflow, will prolong curing and drying times, so make adequate allowances for such. Applications to non-absorbent substrates and at thicker application depths will take longer to dry. Avoid strong drafts and direct sunlight during curing.

UltraFloor Level IT Multi Pro is ready to receive light foot trafficking normally after 90 to 120 minutes, based on 3mm thick application. Floor coverings can be bonded in as little as 4 hours.