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FloorPro Smooth EX

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Self-levelling, Rapid drying and hardening, moisture resistant, industrial grade, high strength, cementitious floor underlayment smoothing compound with very low VOC emission from 2mm to 30mm per coat

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SKU
FPSEX
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Product Pack Size Unit Coverage Total Requirement No of units Required
FloorPro Smooth  kg/m2
FloorPro Smooth  0.00
Price/Sqm

*This Coverage Is Theoretical & Depends Upon The Surface Profile Of The Substrate & The Wastage.
*Coverage Rates Given Refer To This Project Only.
*Wastage Of Material And Preparation Of Surface Not Included.

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DATA RESULT
Appearance Grey fine powder
Water Mixing Ratio 20 to 22%
Applied thickness 2mm to 30mm
Mix Density (kg/cm³) approx. 2140
Max. diam of aggregate <1.5mm
Bleeding (at recommended ratios) Absent 
Working Time @ 25º C 20-30 min
Set to foot traffic 3 – 4 hours
Setting Time @ 25º C 87 min (Initial)118 min (Final)
Application temp. range From +5º C to +35º C
Compressive Strength (N/mm²)EN 12190 > 10 (1 day)  > 15 (3 days)  > 25 (7 days)  > 30 (28 days)
Flexural Strength (N/mm²) EN 1504-3 > 2.5 (1 day)  > 3.0 (3 day)  > 4.5 (7 days)  > 8.0 (28 days)
Tensile Strength (N/mm²) ASTM C307-18 > 0.75 (1 day)  > 1.25 (3 day)  > 2.5 (7 days)  > 3.0 (28 days)
Drying Shrinkage (%)(ASTM C157) 0.011 (7 days)0.029 (28 days)
Residual Moisture(EN 196) > 4% (1 day)  > 2% (4 days)
Pull off adhesion strength(BS 1881 Part 207) > 1.5 (28 days)
Impact Resistance @ 28 daysEN ISO 6272-1 No cracking or delamination observed
Waiting time before bonding flooring:CeramicStoneResilient, textile and Parquet
4 hours24 hours24-72 hours
Waiting time before overcoating:≤ 3 mm                  ≤ 5 mm ≤ 10 mm   *Times are approximate and will be affected by changing substrate and ambient conditions, particularly the temperature and relative humidity.        
~24 hours~48 hours~72hours

 

 * All values given are subject to 5-10% tolerance

* Properties listed above are only based on controlled laboratory samples and tests: Results may differ based upon statistical variations depending upon mixing methods and equipment, temperature, application methods, test methods, actual site conditions and curing conditions.

®=Registered trademark of the North Group.

Description

FloorPro Smooth Ex is a grey powder consisting of special cements with fast setting and hydrating properties, with selected graded silica sand, resins and special additives.

FloorPro Smooth Ex is a self-smoothing, cementitious, non-structural, fast- drying yet fluid and easily workable compound, perfectly suitable for self-levelling floor underlayment with a high bond strength to the substrate for use over poured in-situ and precast concrete floors which will be covered by resin overlays, carpet, vinyl, ceramic tiles or natural stone. Only water needs to be added on site to obtain the desired consistency for pumping or manual installation. It is used in interiors for levelling and smoothing differences in thicknesses from 1 to 20 mm on new or existing substrates, preparing them to receive flooring where a high resistance to loads and traffic is required. The product can be applied with an automatic pressure pump for distances over 100 m

It does not shrink or crack and reaches a high level of compressive and flexural strength and resistance to indentation and abrasion. Due to its rapid hydration formulation, subsequent installation of most types of flooring can begin approx. 12 hours after the application

Additional Information

Applicable Standards/ Compliance: Packaging: Colours: Coverage/ Yield:
Classified as CT-C30-F6 according to EN 13813 25 kg bag. Grey Water to Powder Mix Ratio: 20 to 22% Yield: 14.25 liters of mortar/ 25 kg bag Coverage: approx. 4.75 m² @ 3 mm thickness.
* This coverage is theoretical & depends upon the surface profile of the substrate & the wastage.* Yield = (Bag weight + water addition)/ Mix density

Typical Applications

  • For finishing and levelling new and existing rough undulating floor substrates in thickness from 2 to 30mm
  • Fasttrack industrial refurbishment
  • Suitable for areas subject to wheeled service loads such as chairs and trolleys, typically in hospitals, hotels, theatres, schools and shopping centers.
  • Suitable for internal and external use.
  • For use as an underlayment for all types of floor coverings like  carpet, parquet, vinyl, linoleum, rubber, wood floors and tile adhesives installations for tile and stone

Benefits

  • Self-smoothing - Due to its excellent self-levelling characteristic, FloorPro Smooth Ex immediately eliminates small imperfections (trowel marks, etc.).
  • Highly fluid and pumpable for fast installation
  • Moisture resistant
  • High Strength > 30 N/mm²
  • Rapid strength gain for fast installation of floor coverings
  • Low installed cost
  • Ready for traffic after 3 hours
  • Return to service in 12 hours
  • Suitable for most floor finishes
  • Pre-bagged – only the site addition of clean water is required.
Technical Data Sheet Download
Test Reports Download
Substrate Preparation

Concrete substrate must be sound, rough and of sufficient compressive strength (minimum 25 N/mm²) with a minimum pull off strength of 1.5 N/mm2. Concrete substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment, grinding to remove cement laitance and achieve an open textured surface.  Weak concrete must be removed and surface defects such as blow holes and voids must be fully exposed. The substrate must be sound, rough, clean, dry and   free of all contaminants such as dirt, oil, grease, coatings, cement laitance, sinter layers and surface treatments, etc. The substrate must have adequate strength, load bearing capacity and dimensional stability. Repairs to the substrate, filling of blowholes / voids and surface levelling must be carried out using appropriate products from the RepairPro range of materials. All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush or vacuum. Cracks must be first repaired with RepairPro Inject EPLV.

Priming/ Sealing:

Dusty or very porous concrete surfaces must be cleaned then treated with a coat of BondPro Penetrating Primer (1-part BondPro Penetrating Primer with 3 parts of water depending on the type of substrate). Use at least 100ml to 200ml/ m² (ratio 1:1 with water) of the primer for the initial priming. Allow to dry until a transparent film has been formed. Absorbent / porous substrates should be primed twice. The second coat shall be approx. 50ml to 70ml / m² (ratio 1:1 with water).

If applying onto ceramic or natural stones, apply a coat of BondrPro Grip Primer (after the surface has been thoroughly cleaned and/or mechanically abraded.

The same substrates, if external must be treated with a suitable epoxy-based primer such as FloorPro Primer MT, FloorPro Primer SF. Immediately after the application of primer, the surface must be broad- casted with FloorPro Anti-Slip Aggregates. The remains of sand which are not well bonded must be removed before applying FloorPro Smooth Ex

Product Preparation

Slowly pour full bag of FloorPro Smooth Ex powder into a rust-free mixing bucket containing 5.5 to 5.75 litres of clean water and mix with a low-speed electric mixer fitted with a suitable mixing paddle to obtain an homogeneous, self-levelling lump free mix. After allowing to settle for 2-3 minutes, the mix should be re-stirred and is then ready for use.

The quantity of FloorPro Smooth Ex mixed must be used within 20-30 minutes (at a temperature of +23°C).

Mixing by hand is not recommended. For improved efficiency and continuous production of FloorPro Smooth Ex, it is recommended to use at least two mixing buckets. For larger jobs, the use of a mechanical mixer/pump unit is recommended

Product Application

Pour mixture over substrate or pump through a suitable pump to desired thickness. Apply FloorPro Smooth Ex in a single layer of 1 to 20 mm thick with a large metal spread- er or rake, trowel, keeping the trowel slightly inclined to obtain the desired thickness

FloorPro Smooth Ex can also be applied with an automatic pressure pump. Larger quantities can be prepared in mortar mixers. Damp down the inside of the mixer with water prior to mixing the initial batch. Ensure the mixer is damp but free of standing water.

Whether pouring from a mixing vessel or using a mechanical mixer with an application hose, the discharge point should be approximately 200 mm from the floor to prevent splashing and air entrapment.

Progress should be steady and even. Application should take place continuously into the preceding wet material to ensure even thickness and flow. Do not make new edges and ‘fill in’ the middle. The fresh wet topping can be rolled immediately with a suitable long spiked roller to release all air retained within the underlayment. Do not roll mate- rial that has been applied for more than 2-3 minutes

Others

Expansion Joint:

Expansion joints in the existing substrate floor must be retained and continued through the FloorPro Smooth Ex cementitious self -levelling screed. North Construction Chemicals have a range of joint sealants specifically designed for flooring, consult technical department for advice.

Curing:

FloorPro Smooth Ex is self-curing but as with all cementitious products in hot weather, take adequate measures to protect it from exposure to direct sunlight and hot winds. Due to its rapid hydration formulation, subsequent installation of most types of flooring can begin approx. 12 hours after the application, regardless of thick- ness. For resilient allow a minimum 24 hours of prior to application.

Cleaning:

Tools, equipment and mixers with clean water immediately after use (before hardening). Cured material can only be removed by mechanical means.

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