Architectural Concrete Form Liners
Because of its strength and versatily, concrete continues to gain popularity as the building material of choice. More and more, owners, designers and contractors refuse to settle for plain, unadorned concrete.
For generations, Sika has been proud to promote and advance the use of concrete, and architectural concrete is no exception. Since 1975, Sika has been at the forefront of technology for texturing tilt-up, cast-in-place and precast concrete.
Sika Greenstreak® Form Liners attach to almost any forming system or casting bed prior to concrete placement. Following normal placement practices and curing times, the forming system and liner are stripped, leaving an architectural concrete finish.
A sampling of applications
Sika Greenstreak® Form Liners provide an economical means for adding interest and visual appeal to almost any concrete structure. The desire for architectural concrete continues to grow in both the public and private sectors and the applications for Sika Greenstreak® Form Liners are limitless.
- Institutions
- Community centres
- Commercial and industrial buildings
- Retaining walls
- Sound barrier walls
- Transportation ports and terminals
- Sports complexes
- Amusement parks
- Wastewater treatment facilities
- Bridge abutments and columns
- Transportation ports and terminals
Custom patterns and graphics
Sika offers a wide array of patterns and textures from which to choose. Patterns are available in a variety of sizes and depths to achieve the best visual effect.
- Wood and plank
- Trapezoidal rib
- Sandblast and exposed aggregate finishes
- Brick and block
- Fractured rib and fin
- Natural and cut stone
CUSTOM PATTERNS AND GRAPHICS
If standard patterns do not meet a specific need, Sika Greenstreak® can consider submissions for a custom pattern, texture or graphic. Please contact our Technical Services Department for consultation on custom patterns.
Casting cost effectively
Sika Greenstreak® Form Liners are available in three grades to economically cast an architectural finish in concrete structures of all sizes, types and budgets. For some projects, it may be more cost effective to use more than one grade. When using multiple grades, it may be necessary to shim the Form Liner to compensate for thickness variations from grade to grade.
| Grade | Material | Description | |||
| UNI-CAST | Rigid Polymer (HIPS) | A single-use Form Liner ideal for tilt-up panels and cast-in-place construction requiring cut-outs for doors, windows, utilities, etc. | |||
| MULTI-CAST | Rigid Polymer (ABS) | Intermediate-use Form Liner designed for 2 to 10 uses under normal job site conditions. Primarily used for cast-in-place applications. | |||
| DURA-CAST | Rigid Polymer (ABS) | Intermediate-use Form Liner designed for 10 to 25 uses under normal job site conditions. Used for cast-in-place and gang forming applications. | |||
| Typical sheet size is 4’ x 10’ but varies with pattern. Not all patterns are available in all grades. Each pattern detail shown in this catalogue provides information on availability. | |||||
Check the FAQ at the bottom of the page to learn about the benefits, coverage, application technique, and factors to keep in mind when using Sika Greenstreaks®.
Forming aids and accessories
FORM RELEASE 7000
Form Release 7000 is specially formulated to prevent concrete from bonding to aluminum, steel, plywood and plastic forms and Form Liners. Form Release 7000 should be used with all reusable Sika Greenstreak® Form Liners.
BACK-UP STRIPS
Foam or wood back-up strips provide additional support to prevent deflection of the Form Liner due to form pressures. Back-up strip recommendations are designated in pattern details.
ELEPHANT TRUNK & ACCESSORIES
Sika offers Elephant Trunk, Hoppersand Collars for proper placement of concrete. Placing architectural concrete with Elephant Trunk will minimize aggregate segregation.
Form liner patterns and textures
Sika Greenstreak® Form Liners are available in a variety of patterns and textures and most are offered in at least three different grades. Please consult Sika Canada to determine the most suitable liner for your application and forming technique.
Not all Sika Greenstreak® patterns are shown in this catalogue. Call Sika Canada for additional pattern details, or if you would like us to create a custom pattern or design.
RIBBED DESIGNS
Ribbed patterns should only be used vertically in Cast-in-place applications.
STONE DESIGNS
BLOCK AND BRICK DESIGNS
FRACTURED DESIGNS
Trapezoidal and Fractured Rib Designs can be used horizontally in Tilt-up and Precast applications.
WOOD DESIGNS
MISCELLANEOUS
To learn more
Consult our brochure for more information about our Sika Greenstreak® products.
FAQ
- Pre-construction mock-up is required and must reflect actual job site conditions for warranty to remain in effect.
- Some deeper patterns require back-up strips and are noted on the pattern details shown in this catalog. Please refer to the section of this catalogue regarding back-up strips for additional information.
- Listed Form Liner dimensions are nominal. Changes in temperature can cause the liner to expand or contract. Allow for dimensional variations in the design and installation.
- All Form Liners are UV stabilized; however, protect liners from over exposure to direct sunlight.
- Rigid Polymer liners will become more rigid at temperatures below 0°C. Use extra care under these conditions.
- Concrete temperatures in excess of 60°C will adversely affect the material properties of the Form Liners. Sika does not recommend the use of Form Liners in these applications.
- Rigid Polymer liners are NOT recommended for precast applications using heated beds.
- Type 3 concrete with accelerators create high heat during cure which could damage Rigid Polymer Form Liners.
- Rustication strips are recommended at the liner joints that do not blend with the pattern.
- Use Sika Greenstreak No. 7000 Form Release.
- Although UNI-CAST Form Liners do not require a release agent, Sika® Greenstreak®’s Form Release 7000 is highly recommended to enhance the appearance of the concrete.
- Use one concrete supplier for uniformity of colour and texture.
- Place concrete with an elephant trunk to minimize aggregate segregation.
- Vibrate concrete to eliminate lift lines and minimize air voids.
- Clean the liner between castings with a mild detergent and scrub brush.
- Consult Sika Canada for further specification information.
- See ACI 303R-04 “Guide to Cast-In-Place Architectural Concrete Practice” for further recommendations in design and use.