Sikaflex®-11 FC+
Multipurpose elastic adhesive and joint sealant
Sikaflex®-11 FC+ is a 1-part, multipurpose elastic adhesive and joint sealant with very good application properties which bonds and seals most construction material substrates. Internal and external use.
- Movement capability of ±35 %
- Bonds well to defined substrates without surface pre-treatment
- Good mechanical and weathering resistance
- Very low emissions
- Adhesive-sealant with CE marking
- Pick resistance sealant
Usage
An adhesive to bond construction components and materials such as:- Concrete
- Masonry
- Reconstituted or cast stone
- Ceramic
- Wood
- Metal
- Glass
Advantages
- Movement capability of ±35 %
- Bonds well to defined substrates without surface pre-treatment
- Good mechanical and weathering resistance
- Very low emissions
- Adhesive-sealant with CE marking
- Pick resistance sealant
Packaging
| 300 ml cartridge | 12 cartridges per box |
| 600 ml cylindrical foil pack | 20 foil packs per box |
Refer to current price list for packaging variations
Colour
Colour range to be defined by local sales organisation
Product Details
SUSTAINABILITY
- Conformity with LEED v4 EQc 2: Low-Emitting Materials
- IBU Environmental Product Declaration (EPD) available
- VOC emission classification GEV-Emicode EC1PLUS, license number 2782/20.10.00
- Class A+ according to French Regulation on VOC emissions
CERTIFICATES AND TEST REPORTS
- CE Marking and Declaration of Performance to EN 15651-1 - Sealants for non-structural use in joints in buildings - Facade elements - F EXT-INT CC 25HM
- CE Marking and Declaration of Performance to EN 15651-4 - Sealants for non-structural use in joints in buildings - Sealants for pedestrian walkways - PW EXT-INT CC 25HM
- ASTM C920-11 class 35, Sikaflex-11 FC+, MST, Report
- Certificate of Compliance Sikaflex-11 FC+, ISEGA, Certificate No 43792 U 16 - Incidental Food contact
Composition
i-Cure technology polyurethane
Shelf life
15 months from the date of production
Storage conditions
The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +25 °C. Always refer to packaging.
Density
| ~1.35 kg/l | (ISO 1138-1) |
Shore A hardness
| ~37 (after 28 days) | (ISO 868) |
Tensile strength
| ~1.5 N/mm2 | (ISO 37) |
Secant tensile modulus
| ~0.60 N/mm2 at 100 % elongation (+23 °C) | (ISO 8339) |
Elastic recovery
| ~80 % | (ISO 7389) |
Tear propagation resistance
| ~8.0 N/mm | (ISO 34) |
Movement capability
| ±35 % | (ASTM C 719) |
Chemical resistance
Resistant to many chemicals. Contact Sika® Technical Services for additional information.
Service temperature
−40 °C min. / +80 °C max.
Joint design
The joint dimensions must be designed to suit the movement capability of the sealant. The joint width must be ≥ 10 mm and ≤ 35 mm. A width to depth ratio of 2:1 for facade joints must be maintained (for exceptions, see table below).
Typical joint dimensions for joints between concrete elements:
| Joint distance (m) | Minimum joint width (mm) | Minimum joint depth (mm) |
| 2 | 10 | 10 |
| 4 | 15 | 10 |
| 6 | 20 | 10 |
| 8 | 30 | 15 |
| 10 | 35 | 17 |
Minimum joint width for perimeter joints around windows is 10 mm.
All joints must be correctly designed and dimensioned in accordance with the relevant standards and codes of practice before their construction. The basis for calculation of the necessary joint widths are the type of structure, dimensions, technical values of the adjacent building materials, joint sealing material and the specific exposure of the building and the joints.
Joints ≤10 mm in width are for crack control and therefore non-movement joints.
For larger joints contact Sika Technical Services for additional information.
Application
Sag flow
| ~1 mm (20 mm profile, +23 °C) | (ISO 7390) |
Ambient air temperature
+5 °C min. / +40 °C max.
Substrate temperature
+5 °C min. / +40 °C max. Minimum +3 °C above dew point temperature
Backing material
Use closed cell, polyethylene foam backing rod
Curing rate
| ~3.5 mm/24 hours (+23 °C / 50 % r.h.) | (CQP* 049-2) |
*Sika Corporate Quality Procedure
Skinning time
| ~70 min (+23 °C / 50 % r.h.) | (CQP 019-1) |
Yield
| Bonding | |
| Yield 1 Cartridge (290 ml) | Dimension |
| ~100 spots | Diameter = 30 mm Thickness = 4 mm |
| ~15 m bead | Nozzle diameter = 5 mm (~20 ml per linear meter) |
| Sealing | |||
| Joint width mm | Joint depth mm | Joint length m per Cartridge (300 ml) | Joint length m per foil pack (600 ml) |
| 10 | 10 | 3,0 | 6,0 |
| 15 | 12 | 1,6 | 3,2 |
| 20 | 17 | 0,9 | 1,8 |
| 25 | 20 | 0,6 | 1,2 |
| 30 | 25 | 0,4 | 0,8 |
Consumption depends on the roughness and absorbency of the substrate.
These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.
SUBSTRATE PREPARATION
The substrate must be sound, clean, dry and free of all contaminants such as dirt, oil, grease, cement laitance, old sealants and poorly bonded paint coatings which could affect adhesion of the adhesive / sealant. The substrate must be of sufficient strength to resist with the stresses induced by the sealant during movement.
Removal techniques such as wire brushing, grinding, sanding or other suitable mechanical tools can be used.
All dust, loose and friable material must be completely removed from all surfaces before application of any activators, primers or adhesive / sealant.
Sikaflex®-11 FC+ adheres without primers and/or activators.
However, for optimum adhesion, joint durability and critical, high performance applications the following priming and/or pre-treatment procedures must be followed:
Non-porous substrates
Aluminium, anodised aluminium, stainless steel, PVC, galvanised steel, powder coated metals or glazed tiles, slightly roughen surface with a fine abrasive pad. Clean and pre-treat using Sika® Cleaner P or Sika® Aktivator-205 applied with a clean cloth.
Before bonding / sealing, allow a waiting time of > 15 minutes (< 6 hours).
Other metals, such as copper, brass and titanium-zinc, clean and pre-treat using Sika® Cleaner P or Sika® Aktivator-205 applied with a clean cloth. After a waiting time of > 15 minutes (< 6 hours). Apply Sika® Primer-3 N by brush.
Allow a further waiting time of > 30 minutes (< 8 hours) before bonding / sealing,
PVC has to be cleaned and pre-treated using Sika® Primer-215 applied with a brush.
Before bonding / sealing, allow a waiting time of > 15 minutes (< 8 hours).
Porous substrates
Concrete, aerated concrete and cement based renders, mortars and bricks, prime surface using Sika® Primer-3 N applied by brush.
Before bonding / sealing, allow a waiting time of > 30 minutes (< 8 hours).
Note: Primers and activators are adhesion promoters and not an alternative to improve poor preparation / cleaning of the joint surface. Primers also improve the long term adhesion performance of the sealed joint.
Contact Sika Technical Services for additional information.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with Sika® Remover-208 immediately after use. Once cured, hardened material can only be removed mechanically. For cleaning skin use Sika® Cleaning Wipes-100.
How-To Videos
Frequently Asked Questions (FAQs)
Yes, Sikaflex ® 11 FC+ can be used for many outdoor applications, including but not limited to soundproofing of pipes between concrete and sheathing, adhering and sealing concrete elements, timber and essentially most construction materials.
Yes, Sikaflex 11 FC+ is over-paintable, however due to constantly varying paint formulations, it would be best to test first to ensure compatibility.
Sikaflex 11 FC+ will adhere your birdbath together and will also seal it to hold the water as it is an elastic adhesive sealant.
Structural movements are usually unnoticeable to the human eye, it usually occurs in seasonal and climate change. Construction substrates like wood and concrete expand when there’s moisture in the air and decrease in size in dry weather conditions. If there is too much stress to the bonded substrates, cracks and deterioration can develop.
Sikaflex® 11 FC+ is created with advanced polyurethane technology, it accommodates to the movement of the bonded materials by remaining permanently flexible to support ongoing climate change. Refer to the PDS for detailed information.
Sikaflex 11 FC+ is resistant to water, seawater, diluted alkalis, cement grout and water dispersed detergent.
Sikaflex 11 FC+ is not resistant to alcohols, organic acids, concentrated alkalis and concentrated acids, chlorinated (hydro-carbons) fuel. For detailed information please contact our Technical Service Department on au.technical@au.sika.com or 1300 22 33 48
For Sikaflex 11 FC+ to perform at its best as an adhesive, minimum application thickness must be 1mm (gap must be not smaller than 1mm) and try to avoid forced compression. For Sikaflex 11 FC+ to perform best as a sealant, minimum application thickness is 4mm.
Refer to the PDS for detailed information.
We always recommend using a primer as it promotes better adhesion. Refer to the pre-treatment chart for recommendations.