Sikaflex®-11 FC Purform®
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
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 ± 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
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED v4 EQc 2: Low-Emitting Materials
- VOC emission classification GEV-Emicode EC1PLUS, license number 11290/20.10.00
- Class A+ according to French Regulation on VOC emissions
- VOC emission classification of building materials RTS M1
APPROVALS / STANDARDS
- 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 15651-3 - Sealants for non-structural use in joints in buildings - Sealants for joints for non-structural use in sanitary areas - XS 3
- 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
- Migration Behaviour EN 1186, EN 13130, CEN/TS 14234, Sikaflex®-11 FC Purform, ISEGA, Certificate No. 54312 U 21
Chemical Base
Sika® Purform® polyurethane with a monomeric diisocyanate content of less than 0.1 % by weight. Therefore, users do not require training on the safe use of diisocyanates according to Commission Regulation (EU) 2020/1149.
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
~33 (after 28 days) | (ISO 868) |
Time | Final hardness development (+23 °C / 50 % r.h.) |
1 day | 60 % |
2 days | 85 % |
3 days | 100 % |
Tensile Strength
~1.8 N/mm2 | (ISO 37) |
Secant Tensile Modulus
~0.6 N/mm2 at 100 % elongation (+23 °C) | (ISO 8339) |
Movement Capability
± 25 % | (ISO 9047) |
Lap Shear Strength
~1.0 MPa | (ISO 4587) |
Elastic Recovery
~85 % | (ISO 7389) |
Tear Propagation Resistance
~8.0 N/mm | (ISO 34) |
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.
Application
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) |
Consumption
Sealing
Approximate consumption for floor joints
Joint width [mm] | Joint depth [mm] | Joint length [m] per 300 ml | Joint length [m] per 600 ml |
10 | 10 | 3 | 6 |
15 | 12–15 | 1.5 | 2.5–3 |
20 | 17 | 0.9 | 1.8 |
25 | 20 | 0.6 | 1.2 |
30 | 25 | 0.4 | 0.8 |
Minimum joint width for perimeter joints around windows is 10 mm.
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.
Yield
Bonding | |
Yield 1 Cartridge (300 ml) | Dimension |
~15 m bead | Nozzle diameter = 5 mm (~20 ml per linear meter) |
Yield 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 Purform® adheres without primers and/or activators.
However, for adhesion to many substrates, 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 or Sika® Primer-115 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 TOOLS
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.