Product Data Sheet Safety Data Sheet Show all documents

SikaScreed® Binder

Cementitious binder for producing quick drying screeds.

SikaScreed® Binder is a cementitious binder based on hydraulic binders and special additives to replace cement in conventional aggregate based floor screeds. It provides quick drying indoor and outdoor cementitious screeds with high strength and low shrinkage. Ideal for laying ceramic tiles, natural stones, wood flooring, resilient floor materials and embedding heated screed components.

  • Quick drying
  • Very low shrinkage
  • Very good finishing
  • High strength
Where to buy
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Formation of unbonded 40 to 60 mm thick screeds in residential or industrial environments
  • Formation of bonded 12 mm to 60 mm thick screeds
  • Bonded, unbonded and floating screeds
  • Embedding heated screed components
 

Advantages

  • Quick drying
  • Very low shrinkage
  • Very good finishing
  • High strength

Packaging

20 kg bags.

Colour

Grey powder

Product Details

Product Information

Shelf Life

12 months from date of production

Storage Conditions

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +25 °C. Always refer to packaging.
Technical Information

Compressive Strength

24 hours

≥ 7.5 N/mm2

28 days

≥ 25 N/mm2

Based on: 20 kg binder + 9.6 L water + 80 kg aggregate

Flexural Strength

24 hours

≥ 2.5 N/mm2

28 days

≥ 6 N/mm2

Based on: 20 kg binder +9.6 L water + 80 kg aggregate

 

Application

Application Information

Mixing Ratio

SikaScreed® Binder:

20 kg

Aggregate (0-8 mm):

80 kg

Water (maximum, depending on moisture content of aggregate):

9.6 L

Layer Thickness

  • Unbonded: 40 to 60 mm
  • Bonded: 12 to 60 mm

Ambient Air Temperature

+5 °C min./ +25 °C max.

Substrate Temperature

+5 °C min./ +25 °C max.

Pot Life

~1 hour

Waiting Time / Overcoating

Walkable

~12 hours   1

Laying of ceramic tiles

~24 hours   1

natural stone or marble

~48–72 hours   2

Laying of wood flooring or resilient floors

~7 days   3

1  Times measured at +23 °C 50 % r.h

2  Stones and marble sensitive to humidity, time must be extended to 7 days.

3  Times measured at +23 °C 50 % r.h, screed thickness ≤ 5 cm, ventilation ≥ 2 m/sec.
Consumption

Consumption

3.2 - 4.0 kg/m2 per cm of screed thickness
Application steps

MIXING

Aggregate

Clean and dry 

Wood flooring and resilient materials: Aggregate size 0.1–8 mm, 400 kg/m3

All tile types or natural stones: Aggregate size 0.1–6 mm, 320 kg/m3

Mixing

Prepare the correct quantities of SikaScreed® Binder, aggregate and water to suit the type of screed and flooring to be laid.

Mix binder with aggregate and water using an ordinary concrete mixer, forced action mixer, pan mixer, Turbosol type screw mixer or other suitable equipment to achieve a plastic, highly workable paste.

APPLICATION

Application

Apply mixed screed in the same way and with the same equipment as a conventional screed.

Finishing

Float finish with conventional manual or machine applied equipment within 60 minutes after spreading. To increase speed, surface of the screed can be splashed with water from a brush. A screed surface to receive wood flooring can have a rough texture to improve adhesion.

Curing

Cure floated screed in the same way as a conventional screed.

CLEANING OF TOOLS

Clean all tools and application equipment with water immediately after use. Hardened material can only be removed mechanically

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