Sikaflex® Pro: Sealant for Concrete and Masonry Facades

Sikaflex® Pro is a high-performance 1-component, moisture-curing, and elastic joint sealant specially designed for concrete and masonry facades.
Vendor: Sika
Availability: In Stock

Physical Properties

Composition: Polyurethane
Packaging: 310 ml cartridge, 12 cartridges per box, 600 ml foil pack, 20 foil packs per box
Shelf life: 12 months
Storage conditions: Dry conditions, protected from direct sunlight, between +5 °c and +25 °c
Colour: White, off white, sandstone, pale brown, japan beige, grey, dark grey, brick red, redwood, black, dark amber
Density: 1.25 kg/l approx.
Shore a hardness: 25 approx. (after 28 days)
Secant tensile modulus: 0.35 n/mm² approx. at 100% elongation (23 °c), 0.50 n/mm² approx. at 100% elongation (-20 °c)
Tensile strain at break: 750% approx.
Movement capability: ± 25%
Elastic recovery: 90% approx.
Tear propagation resistance: 5.5 n/mm approx.
Service temperature: -40 °c to +70 °c
Sag flow: 0 mm (20 mm profile, 50 °c)
Ambient air temperature: +5 °c to +40 °c, min. 3 °c above dew point temperature
Substrate temperature: +5 °c to +40 °c
Backing material: Use closed cell, polyethylene foam backing rods.
Curing rate: 3 mm/24 hours approx. (23 °c / 50% r.h.)
Skinning time: 170 minutes approx. (23 °c / 50% r.h.)
Tooling time: 150 minutes approx. (23 °c / 50% r.h.)

Shipping & Delivery

$15.95 shipping on all orders nationwide for most products

Sikaflex® Pro: Sealant for Concrete and Masonry Facades

Vendor: Sika

Sikaflex® Pro: Sealant for Concrete and Masonry Facades


Vendor: Sika

Sikaflex® Pro: Sealant for Concrete and Masonry Facades

Size: 310ml
Colours: Black
Package Type: Box Buy (12)

Please note, this product is BOX BUY only.

Sikaflex® Pro is a high-performance 1-component, moisture-curing, and elastic joint sealant specially designed for concrete and masonry facades. Its excellent movement capability and adhesion make it suitable for various sealing applications both indoors and outdoors.

Sikaflex® PRO is a versatile, high-performance, one-component, moisture-curing, elastic joint sealant designed for various construction applications. With a movement capability of ±25%, it is ideal for sealing both static and dynamic joints on porous substrates. Sikaflex® PRO is ready to use, requiring no mixing, and adheres well to a variety of substrates without the need for primers in most cases.

Suitable Substrates

Sikaflex® PRO adheres well to a wide range of porous substrates, including:

  • Concrete
  • Mortar
  • Brick
  • Stone
  • Wood
  • Fibre Cement

For non-porous substrates, please refer to the product data sheet for pretreatment recommendations.


  • AS/NZS 4020:2018 - Water Potable Approved
  • ISO 11600 F 25 LM
  • ASTM C 920 class 25
  • LEED EQc 4.1
  • SCAQMD, Rule 1168
  • BAAQMD, Reg. 8, Rule 51


Sikaflex® PRO is suitable for a wide range of interior and exterior sealing applications, including:

  • Movement and connection joints in concrete and masonry facades.
  • General sealing applications on porous substrates.
  • Perimeter joints around windows and doors.
  • Joints in precast concrete elements.


  • High Movement Capability: Accommodates joint movement up to ±25%, making it suitable for dynamic joints.
  • Good Workability: Easy to apply and tool, even in challenging conditions.
  • Excellent Adhesion: Bonds well to many porous substrates without priming, saving time and effort.
  • Durable and Weather-Resistant: Withstands harsh weather conditions, UV exposure, and ageing, ensuring long-lasting performance.
  • Paintable: Compatible with many paint systems after curing, allowing for seamless integration with the surrounding surfaces.
  • Water-Resistant: Can be used in damp areas, making it suitable for a variety of applications.

Application Guide

  1. Surface Preparation: Ensure surfaces are clean, dry, sound, and free from contaminants. For optimal adhesion, follow specific pretreatment guidelines for non-porous substrates (see the product data sheet).
  2. Backing Rod Installation: Insert a closed-cell polyethylene foam backing rod to control sealant depth and ensure a proper 2:1 width-to-depth ratio.
  3. Priming (if required): For critical, high-performance applications or non-porous substrates, use Sika® primers as recommended in the product data sheet.
  4. Sealant Application: Using a sealant gun, extrude Sikaflex® PRO into the joint, ensuring full contact with the sides to avoid air entrapment.
  5. Tooling: Within the skinning time, tool the sealant firmly against the joint sides for optimal adhesion. Use masking tape for neat lines and a compatible tooling agent (e.g., Sika® Tooling Agent N) for a smooth finish.
  6. Cleaning: Clean tools and equipment with Sika® Remover-208 or Sika® TopClean T immediately after use.


  • Not suitable for use on natural stone, bituminous substrates, natural rubber, EPDM rubber, or materials that may bleed oils, plasticisers, or solvents.
  • Not recommended for joints under constant water pressure or permanent water immersion.
  • Not for use in or around swimming pools.

Alternative Products

Need Help with Sikaflex® Pro: Sealant for Concrete and Masonry Facades?

Need more information about this product? Hit the button below and reach out to one of our experts now.

Recently Viewed Products