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Emseal DSM System
A watertight expansion joint, the DSM System is for horizontal-plane deck applications. Traffic durable, joint-face adhered and precompressed, DSM System is a primary seal for deck expansion joints. DSM’s toughness and resilience come from its microsphere-modified-acrylic impregnation and tensionless highway-grade silicone bellows coating.
- Watertight
- UV resistant
- ADA compliant
- Traffic durable
SKU
9001
Emseal DSM System – Watertight Joint System for Decks & Walkways
The Emseal DSM System is a high-performance watertight joint system designed for sealing horizontal plane and below-grade joints in decks, roadways, stadiums, parking garages, and more. Featuring a precompressed, silicone or STPE impregnated-foam hybrid, the DSM System is installed with a field-applied epoxy adhesive and locked into place with a silicone or STPE sealant band. Its innovative acrylic adhesive infusion provides superior flexibility, durability, and resistance to thermal shock, making it a reliable choice for both new construction and retrofit applications. The DSM System eliminates invasive anchoring methods, ensuring long-term performance without mechanical fasteners.
Key Features:
- Watertight seal with silicone or STPE bellows positioned just below the deck surface
- Non-invasive anchoring—no bolts, pins, screws, or rails required
- Precompressed, impregnated foam with highway-grade silicone or STPE facing
- Dual-seal movement capability of +50% / -50% (100% total movement)
- Resistant to UV exposure, fuel, chemicals, and extreme temperatures
- Long-lasting adhesion with field-applied epoxy adhesive
- Available in multiple standard sizes, with custom sizes upon request
- Ideal for replacing failed caulk joints in concrete and embedded metal angles
Applications:
- Parking decks and stadium seating areas
- Runways, roadways, and sidewalks
- Airport aprons and mall bridge connectors
- Below-grade wall joints and tunnel walls
- Perimeter joints, stair towers, and ice floors
- Replacement for failed caulk joints in precast concrete decks
Technical Specifications:
| Property | Value |
|---|---|
| Movement Capability | +50% / -50% (Total 100%) |
| Fire Resistance | ASTM E-84 Class A |
| UV Resistance | No degradation after 2000 hours (ASTM G155-00A) |
| Compression Set | Recovers to +50% of nominal size within 24 hours |
| Tensile Strength | 21 psi min (145 kPa) (ASTM D3574 E) |
| Temperature Service Range | -40°F to 185°F (-40°C to 85°C) |
| Available Sizes | 1/2” (12mm) to 4” (100mm) |
Frequently Asked Questions:
What makes DSM different from other joint sealants?
The DSM System features a unique acrylic adhesive infusion that enhances flexibility, durability, and resistance to thermal shock, making it superior to asphalt and wax-based predecessors.
Is the DSM System resistant to fuel and chemicals?
Yes, the silicone or STPE sealant is resistant to fuel exposure and maintains its integrity even when in contact with chemicals.
Does DSM require mechanical fasteners?
No, the DSM System eliminates the need for mechanical fasteners, relying on the backpressure of the foam, epoxy adhesive, and injected sealant band for secure installation.
| Brand | Emseal |
|---|
