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weberfloor fibre rapid 4320

Verified by manufacturer 5 months ago

Saint-Gobain Weber Third party certifications:
  • EPD

    EPD

    Certificate type

Rapid drying, self-smoothing base and renovation screed suitable for residential and commercial areas

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Application

Prepare:


The surface strength of the substrate must be greater than 1N/mm².

It is essential the substrate is suitably prepared and primed with weberfloor 4716 primer prior to installing the Weber floor screed.

The substrate should be clean, free from dust, grease and other impurities that might prevent adhesion.

Walls and any upstands (pillars, columns etc) should be isolated with 10 x 100mm foam.

Large irregularities in the substrate (>50m) should be filled in with a application of weberfloor base rapid 4360, this should be allowed to harden and then primed before application of weberfloor fibre rapid 4320 can begin.

Holes and leaks in the substrate should be sealed. The substrate should be vacuum cleaned, prepared and primed with weberfloor 4716 primer according to the instructions on the data sheet.

Priming improves the screed’s adhesion to the substrate and prevents the formation of air bubbles and dewatering of the screed. Priming also improves the flow properties of the screed. Dry and very porous substrates (cast-in-situ concrete floors) may need to be treated twice. If the screed is applied in more than one layer, each layer must be primed.


Mix:


weberfloor fibre rapid 4320 is mixed with clean water using an automatic screed mixer approved by Weber. The material is mixed with 20% water, which corresponds to 5.0 litres per 25kg bag. It is important to add only the specified amount of water as excess water will reduce strength, increase shrinkage and encourage segregation. Whilst mixing, the water content should be checked continuously by the flow ring test to ensure that the material is correctly mixed and free from separation and lumps of powder. The flow rate should be between 220-235mm . Conversely, reduced water content increases viscosity. The temperature of the mix should ideally be between +15°C and +20°C. For manual mixing thoroughly mix using a slow speed electric mixer (500 rpm) for at least two minutes. Allow to stand for 2 minutes.


Apply:


Light ventilation in the working area is necessary but windows and door openings must be closed sufficiently to avoid draughts during and for 3 days after application.

During application, and for at least 1 week afterwards, the substrate and ambient temperature should not fall below +10°C or rise above +25°C. The relative humidity of the substrate must be <95%. To achieve the best finish, the floor area should be divided into bays of 6 to 8 metres depending on pump capacity and application thickness. weberfloor 4965 barrier foam should be used to form bays and stop ends. Pumping is carried out in sections so that a new section is pumped as quickly as possible and to maintain a wet edge. A wide flat spatula or wobble bar should be used to assist the self-levelling process.

In addition to solid bonded substrates weberfloor fibre rapid 4320 can be applied to a range of other substrates including flooring grade insulation boards, timber floors, underfloor heating and bitumen. For old and estab

Description

weberfloor fibre rapid 4320 is a rapid drying, self-smoothing base and renovation screed — also referred to as a self levelling compound or self levelling screed — which can be applied to depths of 5-50mm used for levelling:


  • Concrete
  • Sand/cement screeds
  • Anhydrite screeds
  • Wooden boards
  • Underfloor heating/warming
  • Insulation boards
  • Existing tiles
  • Bitumen


weberfloor fibre rapid 4320 flow rapid is suitable for covering with:


  • Tiles
  • Timber laminate
  • Vinyl/ Linoleum
  • Carpet
  • Laminate flooring
  • Parquet flooring*


Suitable for use in residential and commercial areas, light foot traffic is possible after 1-3 hours in normal conditions, tiling is possible after 12 hours and final floor coverings other than tiles can be installed in as little as 16 hours, depending on layer thickness and site conditions.


* May require extended time before covering


Features & benefits:


  • For application depths between 5-50mm
  • Weber Low Dust TechnologyTM improves comfort of applicators
  • Pump or hand applied
  • Rapid drying
  • Foot traffic after 1-3 hours
  • Tile after 12 hours
  • Final floor covering installed in as little as 16 hours, depending on layer thickness and site conditions
  • Fibre modified for added durability
  • Low alkalinity
  • Casein-free
  • Low emissions


Things to consider:


  • Cannot be used on external projects
  • Not a wearing screed and must be covered
  • When stored unopened in a cool, dry place at temperatures above 5°C, shelf life is 12 months from date of manufacture
  • Please refer to relevant building regulations prior to the installation of weberfloor products

General information

Finish

Smooth

Material

Fibre-reinforced

Uniclass

Pr_35_31_06_78 Self-smoothing levelling screed mixesPrimary
Pr_35_31_06_28 Fibre-reinforced levelling screed mixes
Ss_30_42_15_10 Bonded or partially bonded cementitious levelling screed systems

CAWS

M10/7 Proprietary quick drying levelling screeds

M10/160 Proprietary self smoothing levelling screeds

Specification data - Self-smoothing levelling screed mixes

Levelling

Concrete, sand, cement screeds, anhydrite screeds, wooden boards, underfloor heating, insulation boards, existing tiles, bitumen.

Application temperature

+10°C to +25°C.

Strength

1 N/mm².

WaterUsed

5 litres/ 25 kg (20%).

CompressiveStrength

C 30.

Flexural strength

F 7.

Shrinkage

< 0.05% (28 days).

Flowrate

220–235 mm.

Screed

Material Consumption: 1.7kg/ m²/ mm.

Pot life

20 min (after adding water).

Setting time

Hardening Time Before Foot Traffic: 1-3 hours in normal conditions. Hardening Time Before Tiling: 12 hours in normal conditions. Hardening Time Before Final Covering: 16+ hours dependent on thickness and site conditions.

Thickness range

5–50 mm.

Finish:

Smooth, finished with various floor coverings.

Sustainability data

BIM objects

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Platform Compatible Version
Revit
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1

IFC
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1

Third party certifications

EPD

EPD

EPD Certificate (weberfloor rapid floor screeds)

Literature

Weber Flooring Systems

Weber Flooring Systems

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