Multipurpose elastic adhesive and joint sealant Sikaflex-11 FC Purform is a 1-part moisture curing elastic adhesive and sealant. It is used for interior and exterior multipurpose bonding and joint sealing. It has good and durable adhesion to most construction materials. - Movement capability of ± 25 %
- Easy to apply and non-sagging
- Bonds well to most construction materials
- Good mechanical and weathering resistance
- Very low monomer content
- No training on the safe use of diisocyanates (REACH) required
- Adhesive-sealant with CE marking
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Usage 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. Advantages - Movement capability of ± 25 %
- Easy to apply and non-sagging
- Bonds well to most construction materials
- Good mechanical and weathering resistance
- Very low monomer content
- No training on the safe use of diisocyanates (REACH) required
- Adhesive-sealant with CE marking
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 White, black, grey and brown |
Technical Information Shore A Hardness | ~33 (after 28 days) | (ISO 868) |
| Time | Final hardness development (+23 °C / 50 % r.h.) | | 1 day | 60 % | | 2 days | 85 % | | 3 days | 100 % |
Secant Tensile Modulus | ~0.6 N/mm2 at 100 % elongation (+23 °C) | (ISO 8339) |
Tear Propagation Resistance
Service Temperature −40 °C min. / +80 °C max.
Chemical Resistance Resistant to many chemicals. Contact Sika Technical Services for additional information.
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 1:0.5 for facade joints and a with to depth ratio of 1:0.8 for floor 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.
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Application Information Sag Flow | 0 mm (20 mm profile, +23 °C) | (ISO 7390) |
Ambient Air Temperature +5 °C min. / +40 °C max. Relative Air Humidity 30 % to 90 % 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 | ~4.0 mm / 24 hours (+23 °C / 50 % r.h.) | (CQP* 049-2) |
*Sika Corporate Quality Procedure Skin Time | ~50 min (+23 °C / 50 % r.h.) | (CQP 019-1) |
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The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
