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Tremco Willseal 250
Tremco Willseal 250 is a pre-compressed silicone-faced foam seal for horizontal traffic joints, in 1/2 in to 6 in sticks. It is used on parking garages, plaza decks, and airport pavements, and holds ±50% movement.
- Watertight primary seal on vehicular and pedestrian joints
- Non-invasive anchoring
- Compression recovery on shear and rapid joints
Willseal 250 - Horizontal Traffic Seal
Tremco Willseal 250 is a pre-compressed, self-expanding polyurethane foam joint seal with a hydrophobic acrylic impregnation and a factory-applied traffic-grade silicone face. It is used as a primary horizontal expansion seal on parking garages, plaza decks, stadiums, and airport pavements that see solvents and fuels. Non-invasive anchoring and up to ±50% movement make it a fit for joints with shear and rapid movement.
Key Features
- Pre-compressed acrylic-impregnated polyurethane foam
- Factory-applied traffic-grade silicone face
- Up to ±50% movement
- Non-invasive anchoring
- Watertight, dust-proof, UV-stable primary seal
Applications
- Parking garage expansion joints.
- Plaza decks on grade.
- Stadiums.
- Airport taxiways and runways.
- Road and bridge joints.
Technical Specifications
| Property | Value |
|---|---|
| Movement | Up to 100% (±50%) |
| Joint sizes | 1/2 in to 6 in sticks, 6.5 ft |
| Cover plate | Required on gaps wider than 3 in |
| Surface temperature | −40 to 190°F, ASTM C711 |
| Temperature stability | −40 to 185°F |
| Install temperature | −14 to 95°F |
| Silicone elongation | >1,000% |
| UV resistance | Pass, DIN 18542 |
| Storage | 68°F |
Documents
Willseal 250 Technical Data Sheet
Frequently Asked Questions
What substrates is Tremco Willseal 250 used on?
Parking garages, plaza decks, stadiums, airport taxiways and runways, and road and bridge joints. Horizontal traffic, including solvents and fuels.
What is the movement of Tremco Willseal 250?
Up to 100% (±50%).
What is the cover-plate requirement of Tremco Willseal 250?
A cover plate is required on gaps wider than 3 in.
What is the surface temperature of Tremco Willseal 250?
−40 to 190°F, ASTM C711.
What is the silicone elongation of Tremco Willseal 250?
Greater than 1,000%.
What solvents is Tremco Willseal 250 used with?
Solvents and fuels on parking, road, bridge, and airport joints.
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