Product Data Sheet Show all documents

Sika® Ucrete® PRG

(former Ucrete® PRG)

Heavy duty resin primer for vertical applications

Sika® Ucrete® PRG is a thixotropic primer and pore filler for use with Sika® Ucrete® renders and detailing mortars. It is based on the Sika® Ucrete® heavy duty binder system.

  • Expert installation by fully trained and licensed applicators
  • Suitable for application on to 7-day-old concrete and 3-day-old polymer screed
  • Good temperature resistance
  • Non-tainting from the end of mixing
  • Low VOC emissions
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Product Data Sheet Show all documents

Usage

Sika® Ucrete® PRG is used as a primer for Sika® Ucrete® renders and mortars. Sika® Ucrete® PRG is used within wet and dry process areas including the following application areas:
  • Food and beverage facilities
  • Pharmaceutical facilities
  • Chemical and processing facilities
  • Manufacturing facilities and workshops
Please note:
  • The Product may only be used by experienced professionals.
  • The Product may not be used in horizontal flooring applications  

Advantages

  • Expert installation by fully trained and licensed applicators
  • Suitable for application on to 7-day-old concrete and 3-day-old polymer screed
  • Good temperature resistance
  • Non-tainting from the end of mixing
  • Low VOC emissions

Packaging

1.43 kg

Refer to the current price list for available packaging variations.

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Halal Certification Europe (HCE), Sika® Ucrete®, WHFC, Certificate No. 21453-2/1/1/Y1

  • Food and Beverage Facilities Suitability, Sika® Ucrete®, HACCP, Test Report No. I-PE-769-SA-2-RG-06b

  • Indoor Air Comfort Gold EN 16516, Sika® Ucrete®, eurofins, Certificate No. IACG-321-01-01-2023
Product Information

Chemical Base

Water-based polyurethane cement hybrid

Shelf Life

Always refer to the best-before date of the individual packaging.

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.

 
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

Application Information

Product Temperature

Maximum

+25 °C

Minimum

+15 °C

Ambient Air Temperature

Maximum

+30 °C

Minimum

+5 °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

+5 °C

Waiting Time / Overcoating

+20 °C and 50 % r.h.

1 hour

Note: Times are approximate and will be affected by changing ambient conditions, particularly temperature and relative humidity.
Consumption

Consumption

0.15-0.2 kg/m²
Application steps

SUBSTRATE PREPARATION

IMPORTANT

Reduced service life due to incorrect treatment of cracks

The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking.

  1. For static cracks, ensure the width is suitable for overcoating with Sika® Ucrete® PRG.
  2. For dynamic cracks, ensure the movement is within the movement capacity of Sika® Ucrete® PRG.

TREATMENT OF JOINTS AND CRACKS

Construction joints and existing static surface cracks in substrate require pre-treating before full layer application. Use Sikadur® or Sikafloor® resins.

The Product can be applied on green or damp concrete with no standing water. Allow for at least 3 days for early concrete shrinkage to occur to prevent shrinkage cracks from appearing on the wearing surface.

Cementitious substrates must be structurally sound and of sufficient compressive strength (minimum 30 N/mm2) with a minimum tensile strength of 1.5 N/mm2.

Substrates must be clean, dry and free of contaminants such as dirt, oil, grease, coatings, laitance, surface treatments and loose friable material.

 

APPLICATION

Application must be undertaken by a fully trained and licensed Sika® Ucrete® applicator.

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