Description
Sika SikaFlex 11FC+ PU Sealant Adhesive
– Available as 300ml Cartridge and 600ml Sausage
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.
USES
An adhesive to bond construction components and materials such as:
- Concrete
- Masonry
- Reconstituted or cast stone
- Ceramic
- Wood
- Metal
- Glass
- A sealant to seal vertical and horizontal joints.
FEATURES
- Movement capability of ±35 %
- Bonds well to defined substrates without surface pre-treatment
- Good mechanical and weathering resistance
- Pick resistant sealant
- Very low emissions
- Adhesive-sealant with CE marking
PRODUCT INFORMATION
Composition
- i-Cure technology polyurethane
Packaging
- 300ml Cartridges (12 Cartridges per box)
- 600ml Sausages (20 sausages per box)
Shelf Life
- 15 months from the date of production
Storage Conditions
- The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at
temperatures between +5°C and +25°C. - Refer to the current Safety Data Sheet for information on safe handling and storage.
- Always refer to packaging.
Appearance and Colour
- 300ml Cartridge – Concrete Grey, Black & White
- 600ml Sausage – Concrete Grey, Black, White & Japan Beige
Density
- 1.35 kg/l approx.
Green Building
- <1 gram per litre as VOC content
TECHNICAL INFORMATION
Shore A Hardness
- ~37 after 28 Days
Movement Capability
- ± 35 % (ASTM C719)
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:
- 2 metre long joint – Min 10mm width – Min 10mm Depth
- 4 metre long joint – Min 15mm width – Min 10mm Depth
- 6 metre long joint – Min 20mm width – Min 10mm Depth
- 8 metre long joint – Min 30mm width – Min 15mm Depth
- 10 metre long joint – Min 35mm width – Min 17mm Depth
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 INFORMATION
Sag Flow
- 1 mm (20 mm profile, +23 °C). (ISO 7390)
Ambient Air Temperature
- +5 °C to +40 °C
Substrate Temperature
- +5 °C min. / +40 °C max. Minimum +3 °C above dew point temperature and free from frost and ice
Backing Material
- Use closed cell, polyethylene foam backing rod
Curing Rate
- ~3.5 mm / 24 hours (+23 °C / 50 % r.h.)
SkinningTime
- ~70 min (+23 °C / 50 % r.h.)
IMPORTANT CONSIDERATIONS
- For good workability, the adhesive temperature must be +20 °C.
- Application during high temperature changes is not recommended (movement during curing).
- Before bonding or sealing, check adhesion and compatibility of paints and coatings by carrying out
preliminary trials. - Sikaflex®-11 FC+can be overpainted with most conventional water-based coating and paint systems.
- Paints must first be tested to ensure compatibility by carrying out preliminary trials.
- The best over-painting results are obtained when the adhesive is allowed to fully cure first.
- Note: non-flexible paint systems may impair the elasticity of the adhesive and lead to cracking of the
paint film. - Colour variations may occur due to the exposure in service to chemicals, high temperatures and/or UV-
radiation (especially with white colour shade). - This effect is aesthetic and does not adversely influence the technical performance or durability of
the product. - Always use Sikaflex®-11 FC+ in conjunction with mechanical fixings for overhead applications or heavy
components. - For very heavy components provide temporary support until Sikaflex®-11 FC+ has fully cured.
- Full surface applications / fixings are not recommended since the inner part of the adhesive layer may
never cure. - Before using on reconstituted, cast or natural stone, contact Sika Technical Services.
- Do not use on bituminous substrates, natural rubber, EPDM rubber or on any building materials which
might leach oils, plasticisers or solvents that could degrade the adhesive. - Do not use on polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PTFE / Teflon), and
certain plasticised synthetic materials. Preliminary trials are recommended or contact Sika® Technical Services. - Do not use to seal joints in and around swimming pools.
- Do not use for joints under water pressure or for permanent water immersion.
- Do not use to seal glass or sanitary joints.
- Do not use for trafficked floor joints.
- Contact Sika®Technical Services for advice on alternative products.
- Do not use for bonding glass if the bond line is exposed to sunlight.
- Do not use for structural bonding.
- Do not expose uncured Sikaflex®-11 FC+ to alcohol containing products as this may interfere with the
curing reaction.
