Sikaflex®-714 WS
Weatherproof sealant for common perimeter applications
Sikaflex®-714 WS is a 1-component, hybrid silicone, UV-stable, moisture curing, elastic weather sealant.
Suitable for use in hot and tropical climatic conditions.
- Good weathering resistance
- Low extrusion force
- Over-paintable
- Movement capability ±35 % (ASTM C719)
- Good adhesion to various substrates
Usage
Sikaflex®-714 WS is designed for perimeter joints between windows and/or doors, building parts and common weather proofing applications.Advantages
- Good weathering resistance
- Low extrusion force
- Over-paintable
- Movement capability ±35 % (ASTM C719)
- Good adhesion to various substrates
Packaging
300 ml cartridge, 12 cartridges per box
600 ml foil pack, 20 foil packs per box
Colour
Black, white, grey, beige, brown and champagne
Product Details
CERTIFICATES AND TEST REPORTS
- ASTM C920, class 35
- VOC test report (US EPA 24)
- VOC Emission Test Report (CDPH)
Composition
Silane terminated polymer
Shelf life
Sikaflex®-714 WS has a shelf life of 12 months from the date of production, if it is stored in undamaged, original, sealed packaging, and if the storage
conditions are met.
Storage conditions
Sikaflex®-714 WS shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +25 °C.
Density
~1.4 kg/l (23°C)
Volatile organic compound (VOC) content
| ≤ 50 g/l | (US EPA 24) |
Shore A hardness
| ~29 (28 days) | (CQP023-1) |
Tensile strength
| ~0.9 MPa | (CQP036-1) |
Elongation at break
| ~350 % | (CQP036-1) |
Movement capability
| ±35 % | (ASTM C719) |
Service temperature
−40°C to +90°C
Joint design
The joint width must be designed to suit the joint movement required and the movement capability of the sealant. The joint width shall be ≥ 6 mm and ≤ 30 mm. The joint depth shall be ≥ 6 mm and ≤ 15 mm. A width to depth ratio of 2:1 must be maintained (for exceptions, see table below).
| Typical joint dimensions: |
| Joint Width [mm] | Joint Depth [mm] |
| 10 | 6 |
| 15 | 8 |
| 20 | 10 |
| 30 | 15 |
All joints must be correctly designed and dimensioned in accordance with the relevant standards, before their construction. The basis for calculation of the necessary joint widths are the type of structure and its dimensions, the technical values of the adjacent building materials and the joint sealing material, as well as the specific exposure of the building and the joints. For larger joints please contact Sika technical service.
Application
Ambient air temperature
+5°C to +40°C, min. 3°C above dew point temperature
Substrate temperature
+5°C to +40°C
Backing material
Use closed cell, polyethylene foam backing rods
Curing rate
| ~2 mm/24 hours (23°C / 50% r.h.) | (CQP 049-2) |
Skinning time
| ~35 min (23°C / 50% r.h.) | (CQP 019-1) |
Consumption
| Joint length [m] per 600 ml foil pack | Joint width [mm] | Joint depth [mm] |
| 10 | 10 | 6 |
| 5 | 15 | 8 |
| 3 | 20 | 10 |
| 2 | 30 | 15 |
SUBSTRATE PREPARATION
The substrate must be clean, dry, sound and homogeneous, free from oils, grease, dust and loose or friable particles. The following priming and/or pre-treatment procedures shall be followed:
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Non-porous substrates
Float glass, coated glass, anodised aluminium and stainless steel have to be pre-treated using Sika® Aktivator-205, Sika® Aktivator-100 or Sika® Cleaner P. Powder coated and PVDF coated metals have to be pre-treated using Sika® Aktivator-205. For details like application and flash-off times refer to the most recent PDS of the respective pre-treatment product.
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Porous substrates
Concrete, aerated concrete and cement-based renders, mortars and bricks shall be primed using Sika® Primer-3 N or Sika® Primer-210. For details like application and flash-off times refer to the most recent PDS of the respective pre-treatment product.
Adhesion tests on project specific substrates must be performed prior to application. For more detailed advice and instructions please contact Sika technical service.
Note: Primers are adhesion promoters. They are neither a substitute for the correct cleaning of a surface, nor do they improve the strength of the surface significantly.
CLEANING OF EQUIPMENT
Clean all tools and application equipment immediately after use with Sika® Remover-208 and/or Sika® Cleaning Wipes-100. Once cured, residual material can only be removed mechanically.