ISEAL EP
ISEAL EP (Exterior Panel) is a compressed fit extruded silicone gasket system developed specifically for panel technology. ISEAL EP is for above grade exterior wall panel conditions, it provides thermal protection, air & water infiltration protection, and is not susceptible to UV damage.
The system consists of extruded silicone gaskets that are adhered to the substrate/panels with silicone sealant. A proprietary ISEAL EP Exoskeletal 4-way splice is used at all four-way vertical-to-horizontal splices to ensure continuity of performance at splices.
Typical Vertical Joint
Typical Horizontal Joint
- Technical Data
- Gasket Seal - Physical Properties
- Silicon Building Sealant - Physical Properties
- Tech Data Sheet
- 10 Year Warranty
| Structural | ASTM E330: Pass at 60 PSF |
| Air Leakage | ASTM E283: <0.04 CFM @ 6.24 PSF |
| Water (Dynamic) | AAMA 501.1: Pass at 15 PSF |
| Water (Static) | ASTM E331: Pass at 15 PSF |
| Interstory Drift | AAMA 501.4: No damage at 1% of story height, No damage at +/-¾” vertical displacement |
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This is commercial grade profile extrusion compound. General Purpose: ASTM C1115, Type C
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| Properties | Specifications | Typical Value | Test Method |
| Hardness, Type A, Pts. | 70 ± 5 | 74 | ASTM D2240 |
| Tensile, min, MPA (psi) | 5.0 (725) | 8.4 (1224) | ASTM D412 |
| Elongation, Min, % | 125 | 306% | ASTM D412 |
| Specific Gravity | Report | 1.37 | ASTM D792 |
| Tear Resistance, Die B, | |||
| Min, kN/m (lbf/n) | 9 (51) | 24.5 (140) | ASTM D624 |
| Compression Set, 22 hrs @100° C | |||
| Method B, Max, % | 15 | 7.5% | ASTM D395 |
| Heat Resistance, 70 hrs @150° C | ASTM D573 | ||
| Change in Hardness, max, pts | ±5 | +2 | |
| Change in Tensile, max, % | ±15 | +1.0 | |
| Change in Elong., max, % | ±30 | -26.0 | |
| Low Temperature Brittleness, 3 minutes @ -40° C | ASTM D2137 | ||
| Method A, No Cracks or Cracking | Passed | ||
| Ozone Resistance, 100 hrs @ 300mPa @ 70° C, 20% elongation | ASTM D1149 | ||
| Method B, Procedure B1, 7x, No Cracks or Cracking | Passed | ||
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Staining of Surface, 48 hrs @70° C, Delstar Acrylic White Enamel in conjunction with Satin Primer DPE-1338 |
ASTM D925 | ||
| Method A, No Contact Stain | Passed | ||
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Staining of Surface, 48 hrs w/UVA-340 bulbs per ASTM G-154, Delstar Acrylic White Enamel in conjunction with Satin Primer DPE-1338 |
ASTM D925 | ||
| Method B, No Contact Stain | |||
| Dow Corning 795 Silicone Building Sealant | |||
| Test | Property | Unit | Result |
| As Supplied | |||
| ASTM C 679 | Tack-Free Time, 50% RH | Hours | 3 |
| Curing Time at 25°C (70°F) and 50% RH | Days | 7-14 | |
| ASTM C 639 | Flow, Sag or Slump | Inches (mm) | 0.1 (2.54) |
| Working Time | Minutes | 20-30 | |
| VOC Content1 | g/L | 28 | |
| As Cured-After 21 days at 25° (77°F) and 50% RH | |||
| ASTM D2240 | Durometer Hardness, Shore A | Points | 35 |
| ASTM C794 | Peel Strength | Lb/in (kg/cm) | 32 (5.7) |
| ASTM C 1135 | Tension Adhesion Strength | ||
| At 25% extension | Psi (MPa) | 45 (0.310) | |
| At 50% extension | Psi (MPa) | 60 (0.414) | |
| ASTM C 719 | Joint Movement Capability | Percent | ±50 |
| ASTM C 1248 | Staining (granite, marble, limestone, brick and concrete) | None | |
| As Cured-After 21 days at 25° (77°F) and 50% RH followed by 10,000 hours in a QUV weatherometer, ASTM G 53 | |||
| ASTM C 1135 | Tension Adhesion Strength | ||
| At 25% extension | Psi (MPa) | 35 (0.241) | |
| At 50% extension | Psi (MPa) | 50 (0.345) | |
| 1 Based on South Coast Air Quality Management District of California. Maximum VOC is listed both inclusive and exclusive of ware and exempt compounds. For a VOC data sheet for a specific sealant color, please send your request to product.inquiry@downing.com. | |||
Benefits of the ISeal Exterior Panel System
Proven Materials
The ISEAL EP system uses proven silicone materials. Silicone has been used for over 40 years in conjunction with panel products.
Installation Quality Control
The ISEAL EP extrusion is designed with sealant depth gauging tabs, which allow for easy visual confirmation of correct sealant depth and accurate alignment of panels.
Proven Performance
The ISEAL EP system, including the exoskeletal 4-way splice has been subjected to rigorous laboratory testing to validate system performance.
Faster Dry-In
With the ISEAL EP system the 4-Way splice joints are installed as the panels are erected, providing completed panel perimeter joints with each installed panel. With traditional sealant/backer rod joints the joints are typically installed after all panels are installed, leaving the building exposed to the elements during construction.
Movement Capacity
The ISEAL EP gasket is highly flexible and able to easily accommodate building movements while imparting lower loads on the panel joints as compared to a traditional sealant/backer rod joint. This reduces the risk of adhesive joint failure.
Factory Installation Quality
Example Installation Details
Horizontal Seals Installed in In Plant
Horizontal Seals Installed in On-Site
Exoskeletal Seal Splice - Outside Face
Exoskeletal Seal Splice - Inside Face
Installation
Over 90% of the ISEAL EP system is shop installed. The horizontal and vertical seals are shop installed. The 4-way joint is installed in the field as the panels are set. All joints are installed by trained technicians.
The horizontal joint at the panel below and the vertical joint at the panel edge are filled with sealant to the top of the depth gauge. Finally, the Exoskeletal Seal splice is installed at the 4-way splice.
