Sika Ucrete BC 4, Basecoat for 4 Mm Ucrete Systems, Interior

Category: Screeds

Sika

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

Packing
- 18.88 kg
- 23.18 kg
- 26.88 kg

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Heavy-duty, flow-applied basecoat for 4 mm Sika Ucrete flooring systems

Sika Ucrete BC 4 is a fast-curing, flow-applied mortar. It provides a broadcasted base coat for 4 mm Sika Ucrete flooring systems.

Expert installation by fully trained and licensed applicators
Suitable for application on to 7-day-old concrete and 3-day-old polymer screed

Usage

Sika Ucrete BC 4 is used as a:

Basecoat under Sika Ucrete DP, Sika Ucrete CS and Sika Ucrete HPQ flooring systems
Scratch coat under all Sika Ucrete flooring systems

Please note:

The Product may only be used by experienced professionals.

Advantages

Expert installation by fully trained and licensed applicators
Suitable for application on to 7-day-old concrete and 3-day-old polymer screed

Can be accelerated with Sika Ucrete Accelerator for fast installation within a 12-hour window
Non-tainting from the end of mixing

Packaging

18.88 kg

Refer to the current price list for available packaging variations.

Technical Information

Tensile adhesion strength

> 2.0 N/mm² (concrete failure)

(EN 1542)

Chemical Resistance

Laboratory-defined resistance to many individual chemicals. Before proceeding, contact Sika Technical Service for specific information.

Application Information

Layer Thickness

4.0 mm

Product Temperature

Maximum	+25 °C
Minimum	+15 °C

Ambient Air Temperature

Maximum	+30 °C
Minimum	+12 °C

Dew Point

Beware of condensation. The substrate and uncured applied product must be at least +3 °C above the dew point to reduce the risk of condensation or blooming on the surface of the applied product. Low temperatures and high humidity conditions increase the probability of blooming.

Substrate Temperature

Maximum	+30 °C
Minimum	+12 °C

Waiting Time / Overcoating

Substrate temperature	Waiting time
+8 °C	16–24 hours
+10 °C	4 hours (with Sika Ucrete Accelerator)

Note: Times are approximate and will be affected by changing ambient and substrate conditions.

The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.

Contact our sales team for other specifications or custom made products.

Preview TDS

Download TDS

General Specifications
Packaging	18.88 kg
Usage	Basecoat and scratch coat under Ucrete systems (4 mm)
Chemical Base	Water-based polyurethane cement hybrid
Usage Area	Interior
Color	N/A
Storage Conditions	The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to the packaging.Refer to the current Safety Data Sheet for information on safe handling and storage.
Density	N/A
Consumption	6.0-8.0 kg/m²
Application Thickness	4.0 mm
Ambient Air Temperature	+12°C min. / +30°C max.
Substrate Temperature	+12°C min. / +30°C max.
Waiting Time	+8°C – 16–24h / +10°C – 4h (with Ucrete Accelerator)