WILLSEAL® 250 - Foam Joint Sealant
Verified by manufacturer 7 days ago
Polyurethane foam with hydrophobic with acrylic polymer sealing compound coated in a silicone sealant.
Application
Suitable for use in horizontal joints in applications such as:
- Vehicular traffic.
- Primary horizontal expansion for pedestrian traffic.
- Parking garages.
- Stadiums.
- Plaza decks on grade.
- Airport taxiways and runways.
Description
Willseal® 250 is a pre-compressed, self-expanding open micro-cell polyurethane foam impregnated with a hydrophobic, acrylic polymer sealing compound coated with a factory-applied silicone sealant. It is designed to provide a watertight, dust-proof, airtight, noise-reducing, thermally insulating, and UV stable primary seal that does not require invasive anchoring for installation.
Features and benefits:
- Designed to provide a maximum seal in structures with shear and rapid movement.
- Allows for up to 100% (±50%) movement.
- Accommodates rapid rates of joint movement.
- Has excellent compression recovery.
- Utilizes non-invasive anchoring.
- Not based on wax, asphalt or bitumastic impregnation.
- Monolithic construction: No unbonded laminations.
- Willseal 250 is supplied in a pre-compressed state for ease of installation.
- Material will self-expand to fill the joint.
General information
Color | Grey Black |
Finish | Coated |
Material | Polyurethane (PUR) Foam Silicone |
Shape | Rectangle |
Length | 1981.2 mm |
Width | 12.7 mm Guidance for specification option: Minimum standard joint width 152.4 mm Guidance for specification option: Maximum standard joint width. Bespoke |
Uniclass | |
CAWS | L20/820 Sealant joints L10/75 Sealant joints L20/80 Sealant joints L10/810 Sealant joints |
Specification data - Polyurethane (PUR) expanding foam fillers
Classification data | |
Material | Open micro-cell polyurethane foam impregnated with a hydrophobic, acrylic polymer sealing compound coated with a factory-applied silicone sealant. |
Colour | Concrete grey. Highway grey. Traffic-grade black. |
Length | 1981.2 mm. Guidance for specification option: 6 ft lengths. |
Width | Guidance for specification option: Available in standard widths 0.5–6" (12.7–152.4 mm). Custom sizes available upon request, consult manufacturer and insert requirements. |
Cover plates | Not required. Required. Guidance for specification option: Required for any gap greater than 3" (76.2 mm). |
Operating temperature range | -40°C to +80°C. |
Sustainability data
Material | Polyurethane (PUR) Foam Silicone |
Literature
WILLSEAL® 250 - Product Data Sheet