Willseal LLC
sealants and joints

CONTACT INFO

34 Executive Dr.
Hudson, NH 03051
Toll Free: 800-274-2813
Fax: 800-416-0550

COMPANY OVERVIEW

Willseal, the original brand of pre-compressed joint sealants, constantly raises industry standards while continuing to expand around the globe. Willseal products have been specified and successfully installed on thousands of construction projects worldwide. Willseal is committed to bringing intelligent solutions to our customers by utilizing technology-driven designs to create superior sealant systems.

QUALITY

  • Willseal products meet DIN 18542*, the world’s most demanding standard, specifically for pre-compressed sealants.
  • Willseal Fire Rated products meet the standards for a UL 2079 Fire Rating.\
  • Willseal products are independently tested for water and air tightness. Independent lab results are available for ASTM 283, ASTM 330, ASTM 331 & ASTM 547.


INNOVATION
  • Willseal products are solid sealants with a uniform core, no unbonded laminations, and no cheap filler foams.
  • Fire Rated Systems have a first in class integral smoke barrier to provide additional security and life safety.
  • Willseal horizontal seals contain a specially designed water-barrier, laminated internally and tested to 30 psi of head pressure.


GREEN
  • Willseal as a company is firmly committed to environmental stewardship.
  • Willseal products contain no volatile organic content (VOC), thus satisfying the LEED™ criteria for Indoor Environmental Quality.


VALUE
  • Through strategic alliances with our vendors, innovative manufacturing processes, and economies of scale, Willseal is able to offer our customers the best value proposition for state-of-the-art expansion joints.


ALL PRODUCTS

{{this.show}} {{this.hide}} Permeable Joint Sealants

Breathable Primary or Secondary Seal for Vertical Applications   image

Breathable Primary or Secondary Seal for Vertical Applications - Willseal® 600

Willseal® 600 is a pre-compressed, self-expanding foam joint sealant, engineered to perform as a highly flexible, weather-tight, primary or secondary seal in vertical exterior applications. Willseal 600 is specifically designed to provide the ideal foundation for a large variety of wet sealants, such as silicone, polyurethane, polysulfide, and acrylic. Unlike conventional wet sealant and backer rod methods, Willseal 600 is not susceptible to breakdowns caused by excessive or rapid joint movements, thus protecting structures against rain, wind, dust, and sound. Willseal 600 is waterproof to a wind driven rain at 12.5psf (70mph) yet it is vapor permeable, making an optimal addition to any air barrier system, cavity wall joint, and interior partition application.
Primary Vertical Sealant image

Primary Vertical Sealant - Willseal 150

Willseal 150 is a precompressed, self- expanding polyurethane foam joint sealant that is designed to seal against rain, wind, sound, draft, and dust. Unlike other conventional methods, Willseal 150 is not susceptible to breakdowns caused by excessive joint movements, joint strain, surface contamination, aging, and general tensile stress-caused failures. It does not dry out, shrink, or deteriorate. There's no mixing, no masking, no staining, and no mess. Willseal 150 can be installed under many weather and temperature conditions.
Horizontal Seal with Traffic Grade Silicone image

Horizontal Seal with Traffic Grade Silicone - Willseal 250

Willseal 250 is a pre-compressed, self-expanding foam joint sealant with a traffic grade silicone coating engineered to perform in primary horizontal applications that may be subject to solvents and fuels such as those found in parking garages, road and bridge joints, and airport runways. Willseal 250, with its silicone cap, provides a primary seal and is waterproof to rain and snow, making it an optimal primary joint. Willseal 250 is specifically designed to provide a maximum seal in structures with shear and rapid movement. Willseal 250 is manufactured at the highest levels of quality and finely engineered to the maximum performance for every joint size.
Road Bridge Expansion Joint image

Road Bridge Expansion Joint - Willseal 250B

Willseal 250B is a pre-compressed, self-expanding foam joint sealant with a highway grade silicone coating engineered to perform in primary horizontal applications such as road and bridge joints and airport runways. Willseal 250B, with its silicone cap, provides a primary seal, and is waterproof to rain and snow, making it an optimal primary sealant. Willseal 250B is specifically designed to provide a maximum seal in structures with shear and rapid movement. Willseal 250B is manufactured at the highest level of quality and specially engineered for maximum performance in joints from 1/2" 6".
Underwater Submersible Seal image

Underwater Submersible Seal - Willseal 250BG

Willseal 250BG is a primary seal for below grade applications where partial or total water immersion is expected. Willseal 250BG is suitable for fresh, ground, sea, and chlorinated water. Developed to perform under extreme conditions in vertical and horizontal applications including water treatment facilities and underground parking structure type expansion joints. It is ideal to discuss all project parameters and requirements with Willseal Technical Support to design the most appropriate system.
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Closed Cell EVA - Willseal Coreseal

Willseal Coreseal is a preformed, compressible system that is impermeable to water and when bonded in place provides a watertight seal. It was developed to meet all applicable standards for compressible sealants and performs under extreme conditions such as those found in vertical and horizontal applications including bridge and parking structure type expansion joints. It provides a watertight, dust-proof, airtight, UV stable, chemically resistant, soundproof, and insulated primary seal. Once installed in the joint, the material adapts to the width of the joint and the irregularities of the substrate, provided such profile changes are not sudden or extreme.
Closed Cell Foam Sealant with Silicone Face image

Closed Cell Foam Sealant with Silicone Face - Willseal Color Coreseal

Willseal Color Coreseal is a dense, closed cell foam typically used for larger movement joints. It has a colorized silicone skin on the exposed face which provides a chemically resistant, puncture resistant and waterproof joint. Due to its strong closed cell structure, it has excellent compression, tension and shear capabilities. It is installed with a lubricating sealant that facilitates installation and when cured, permanently bonds the Willseal Color Coreseal in place.
Seismic Seal image

Seismic Seal - Willseal Seismic

Willseal Seismic is a one-step primary sealant for exposed areas where color matching is important. It has a puncture resistant, elastomeric coating on the exterior surface, which can be factory colored to match most construction substrates or sealants. The joint is watertight and color matched.
Vertical 2 + 3 Hour Fire Rated Seal image

Vertical 2 + 3 Hour Fire Rated Seal - Willseal FR-V

Willseal FR-V is designed to be used in vertical wall installations by itself, but it can be used behind any other expansion joint cover, plate or filler where joint depth allows. Because it is coated on both sides, it can be placed with either side exposed, adding to the versatility and increasing the aesthetic fireproof sealing options.Willseal FR-V is a second generation, unified fire rated, sound, energy, and waterproof sealant system that can be supplied for +/- 25% and +/- 50% joints. Willseal FR-V is not made of thin, unbonded vertical layers that can delaminate with joint shear or thermal shock. In addition to UL 2079, Willseal FR-V has been independent lab tested to ASTM 330, 331, 283 & 547 for water and air penetration. It has been tested and passes TAS 202/203 requirements for hurricane force exposure.

Can be supplied uncoated, coated on one side, or coated on both sides, depending on UL listing. Refer to www.ul.com.
Horizontal 2 + 3 Hour Fire Rated Seal image

Horizontal 2 + 3 Hour Fire Rated Seal - Willseal FR-H

Willseal FR-H is designed to be used in horizontal expansion joints by itself, but it can be used behind any other expansion joint cover, plate or filler where joint depth allows. Because it is coated on both sides, it can be placed with either side exposed, adding to the versatility and increasing the aesthetic fireproof sealing options.Willseal FR-H is a second generation, unified fire rated, sound, energy, and waterproof sealant system. Willseal FR-H is not made of thin, unbonded vertical layers that can delaminate with joint shear or thermal shock. In addition to UL 2079, Willseal FR-H has been independent lab tested to ASTM 330, 331, 283 & 547 for water and air penetration. It has been tested and passes TAS 202/203 requirements for hurricane force exposure.

Can be supplied uncoated, coated on one side, or coated on both sides, depending on UL listing. Refer to www.ul.com.


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Last Update: 2017-11-14