Roberts BulkFlo High Build Self-Leveller

Description

Roberts BulkFlo High Build Self-Leveller
– 3mm to 100mm Build Thickness
– Available in 20kg Bags

Roberts BulkFlo is a high-build self-levelling compound with excellent flow
properties formulated for self-levelling differences from 3mm to 100mm in thickness
on new or existing internal concrete substrates. It develops smooth and even
surfaces with high levels of mechanical resistance, ensuring the subsequent
installation of floor coverings including carpet, carpet tiles, resilient
coverings, ceramic tiles, timber flooring and floating floors. It is ready to
accept most floor coverings after approximately 24-36 hours. Roberts BulkFlo is
pumpable for ease of installation.

 

FEATURES & BENEFITS:

• Excellent Flow
• Thickness 3mm – 100mm
• Pump application

 

TECHNICAL CHARACTERISTICS:

• Roberts BulkFlo is a grey powder with a unique rapid setting and
  hydrating cement, blended with graded silica sand, resins and special additives.
• Roberts BulkFlo was developed in Australia at RLA research
  laboratories.

 

RECOMMENDED USE:

• Roberts BulkFlo is suitable for applying carpet, carpet tiles, vinyl
  and resilient coverings, ceramic tiles, timber flooring and floating floor
  finishes.
• Installations of Timber Floor coverings can take place 36 hours after
  application.
• When installing hardwood timber flooring onto a concrete substrate, the
  levelling must be no less than 3mm.
• Internal use only
• Roberts BulkFlo is suitable for covering under-floor heating systems;
  check with the underfloor heating manufacturer’s recommendations before proceeding
  with the installation.

 

CLASSIFICATION ACCORDING TO EN 13813:

• The material properties of Roberts BulkFlo are classified as
  CT-C30-F7

 

SURFACE PREPARATION:

• Substrates must be dry, sound, clean, and per the relevant National,
  State, and Local Building codes, including applicable Australian Standards.
• Substrates must also be free of wax, grease, oil, polishes, old
  adhesive, curing compounds, high levels of moisture, and any other surface
  contaminants that may affect adhesion.
• If mechanical preparation is required, prepare the floor using
  recommended methods such as shot blasting and diamond grinding to provide a
  roughened, clean, sound, and open porous surface.
• Thoroughly vacuum loose material and dust.
• The minimum subfloor temperature before commencing installation should
  be 10ºC.
• Do not use solvents or acid etching to clean the subfloor.
• For resilient installations, relative humidity and pH readings must be
  carried out on the concrete substrate as outlined in the Australian Standard 1884-
  2021.
• For substrates that display high moisture levels, RLA recommends that
  RLA MOISTURE SEAL is applied before the Installation of Roberts BulkFlo.
• If temperatures are less than 5°C or higher than 35ºC, please contact
  the RLA Technical department for further details.

 

PRIMING:

• Prime substrates with ROBERTS R48 UNIVERSAL PRIMER

Porous Substrates:

• Generally not required.
• Where it is to be installed over particularly porous substrates or high
  stress areas, it is recommended to prime surfaces using ROBERTS R48 UNIVERSAL
  PRIMER.
• Mix one (1) part Universal Primer with two (2) parts of clean water.
• Apply an even film using a roller or brush, ensuring the entire area is
  covered and allowed to cure.

 
Non-Porous Substrates:

• Mix one (1) part Roberts R48 Universal Primer with two (2) parts of
  clean water.
• Apply an even film using a roller or brush, ensuring the entire area is
  covered and allowed to cure.
• Highly absorbent or porous surfaces may require a second coat of
  Roberts R48 Universal Primer to avoid pinholes.

 
Examples of Non-Porous Substrates:

• Burnished Concrete, Ceramic Tiles, Liquid Waterproofing membranes.

 

• NOTE 1: For extremely non-porous substrates, it is recommended
  that a light grind or sand be conducted to enhance adhesion.

 

• Determining whether a substrate is POROUS or NON-POROUS, pour water
  from a bottle or a dropper forming a puddle onto the substrate surface, the size of
  a 10-cent coin.
1. If the water absorbs into the substrate in less than ONE (1) minute,
   the substrate is POROUS.
2. If the puddle remains, the substrate is NON-POROUS.

• NOTE 2: ATSM F3191-16 Standard Practice for Field Determination
  of Substrate Water Absorption (Porosity) for Substrates

 

MIXING RATIO:

• Mix one 20kg bag with 4.2-4.4 litres of clean water.
• Mix Roberts BulkFlo levelling compound with a drill and suitable mixing
  paddle.
• Slowly add the powder to the water while mixing at a low speed.
• It is essential to ensure the powder and water are mixed evenly for
  approximately three (3) minutes and that the water has dispersed to obtain a lump-
  free mix.
• Do not overwater, as this will promote bleeding and separation
  with a reduction in bond and tensile strength.
• DO NOT MIX BY HAND & DO NOT ADD EXCESS WATER

 

APPLICATION:

• Apply in one coat from 3mm to 100mm.
• Apply the mixed compound to the primed substrate using a gauge rake,
  stand-up spreader at the required height adjustment, or trowel on a slight incline
  to obtain the necessary thickness.
• Installations can also be pumped using an appropriate mixing pump.
• The mixed quantity must be used within 15 minutes at a temperature of
  23°C.
• Due to its self-levelling properties, Roberts BulkFlo will quickly
  develop a smooth finish and even surface.

 

SETTING TIMES:

• When applied will harden after 3–4 hours at 23°C and can be walked on
  after this time.
• The levelling coat will be ready to receive the application of carpets,
  carpet tiles, vinyl and resilient coverings, floating floors and tiled floor
  coverings fixed with adhesives after 24 hours at 23°C.
• Installations of Timber Floor coverings can take place 36 hours after
  application (time may vary depending on temperature and humidity).

 

COVERAGE:

• 4m² per 20kg bag @ 3mm thickness

 

CLEAN UP:

• Clean tools immediately after use with water.
• Do not pour mixed Roberts BulkFlo down drains, which will cause
  blockages.
• Pour any leftover mix into an empty bag of Roberts BulkFlo and discard
  once the product has set hard.

 

SHELF LIFE/STORAGE:

• 12 months when stored in original unopened packaging.
• Stored in a dry area off the ground.

 

PACKAGING:

• 20kg bags

 

HEALTH AND SAFETY:

• For information and advice on the safe handling, first aid, storage and
  disposal of chemical products, users must refer to the most recent Safety Data
  Sheet (SDS) containing physical, ecological, toxicological and other safety-related
  data.

 

NOTES AND PRECAUTIONS:

• Drying times are extended when applied in cold ambient temperatures.
• Do not allow Roberts BulkFlo to come into contact with water during or
  after the curing process.
• Do not apply to substrates subject to rising dampness.
• INTERNAL USE ONLY
• Do not apply an overcoat until Roberts BulkFlo is completely dry.
• Do not apply over expansion joints, as reflective cracking may occur.

 

COMPATIBILITY:

• Roberts BulkFlo is compatible with the ROBERTS range of moisture
  seals, primers, carpet, resilient, and timber adhesives.

 

APPLICATION AND PERFORMANCE DATA:

• Refer to the attached Technical Data Sheet