Sikaflex®-715
Sikaflex®-715 is a one-component silane terminated polymer (STP) sealant that cures on exposure to atmospheric humidity. Its unique flow characteristic is designed for roof sealing applications. Sikaflex®-715 has very good adhesion and UV resistance making it suitable for open joints.
- Primerless adhesion to difficult substrate
- Semi self-leveling for roof sealing
- Very good dispensing characteristics
- Isocyanate free
- Low VOC content
- Very good UV resistance
PRODUCT BENEFITS
- Primerless adhesion to difficult substrate
- Semi self-leveling for roof sealing
- Very good dispensing characteristics
- Isocyanate free
- Low VOC content
- Very good UV resistance
Usage
Sikaflex®-715 is suitable for sealing a wide variety of RV roofing components including, EPDM; metals such as anodized and bare aluminum; phosphated, chromated and zinc plated steel; metal primers; 2-part coatings; ceramics and plastics. Seek manufacturer’s advice and perform tests on original substrates before using Sikaflex®-715 on materials prone to stress cracking. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.Packaging
| Cartridge | 300 ml |
| Drum | 50 gal |
Product Details
| Chemical base | Silane Terminated Polymer | |
| Color (CQP001-1) | White, black | |
| Cure mechanism | Moisture-curing | |
| Density (uncured) | 1.52 kg/l (12.7 lb/gal) | |
| Non-sag properties | Semi self-leveling | |
| Application temperature | 5 ─ 40 °C (41 ─ 104 °F) | |
| Skin time (CQP019-1) | 30 minutes A | |
| Curing speed (CQP049-1) | (see diagram 1) | |
| Shore A hardness (CQP023-1 / ISO 48-4) | 10 | |
| Tensile strength (ASTM D412) | 0.6 MPa (85 psi) | |
| Elongation at break (ASTM D412) | 500 % | |
| Service temperature (CQP513-1) | -50 ─ 90 °C (-58 ─ 194 °F) | |
| Shelf life | cartridge drum | 9 months B 6 monthsB |
| CQP = Corporate Quality Procedure | A) 23 °C (73 °F) / 50 % r. h. | B) storage below 25 °C (77 °F) |
CURE MECHANISM
Sikaflex®-715 cures by reaction with atmospheric moisture. At low temperatures the water content of the air is generally lower and the curing reaction proceeds somewhat slower (see diagram 1).
Diagram 1: Curing speed Sikaflex®-715
CHEMICAL RESISTANCE
Sikaflex®-715 is generally resistant to fresh water, seawater, diluted acids and diluted caustic solutions; temporarily resistant to fuels, mineral oils, vegetable and animal fats and oils; not resistant to organic acids, glycolic alcohol, concentrated mineral acids and caustic solutions or solvents.
Application
Surface Preparation
Surfaces must be clean, dry and free from grease, oil and dust.
For repairs, removal of pre-exisiting products is crucial to avoid compatibility issues. Surface treatment depends on the specific nature of the substrates and is crucial for a long lasting bond. Adhesion and compatibility have to be verified by tests on original substrates.
Application
Sikaflex®-715 can be processed between 5 °C and 40 °C (41 °F and 104 °F) but, changes in reactivity and application properties have to be considered. The optimum temperature for substrate and process material is between 15 °C and 25 °C (59 °F and 77 °F). Sikaflex®-715 can be processed with manual, pneumatic or electric driven piston guns as well as pump equipment.
For advice on selecting and setting up a suitable pump system, contact the System Engineering Department of Sika Industry.
Removal
Uncured Sikaflex®-715 may be removed from tools and equipment with Sika® Remover-208 or another suitable solvent. Once cured, the material can only be removed mechanically. Hands and exposed skin have to be washed immediately using a suitable industrial hand cleaner and water.
Do not use solvents on skin.
Overpainting
Sikaflex®-715 is not suitable for overpainting.