Joint Sealants & Expansion Joints

Properly installed joint sealants and expansion joints are critical to maintaining structural integrity and protecting buildings from moisture intrusion and environmental stress. Our skilled installers are highly experienced in applying neatly tooled joint sealants—a specialized skill that’s often underestimated yet essential for effective performance and a clean, professional finish. At R.E. Kelley, we ensure your building is protected with meticulous attention to detail and quality craftsmanship.

Our Joint Sealant and Expansion Joint services include:

  • ​Silicone Joint Sealants
  • Polyurethane Joint Sealants
  • Polyurea Joint Sealants
  • Epoxy Joint Fillers
  • Joint Sealant Replacement/Recaulking
  • Exterior/Facade Joint Sealants
  • Expansion Joints
  • Structural Movement Joints
  • Parking Garage Expansion Joints
  • Concrete Expansion Joints
  • Pre-compressed Expansion Joints
  • Gland Joints
  • Watertight Joint Systems

Featured Projects

To see our joint sealant and expansion joint services in action, take a look at the wide variety of projects in our gallery.

Frequently asked questions (FAQs)

Click any of the FAQs below to learn more.

  • How do you determine which sealant is right for my building?

    When sealing exterior building joints, we typically consider two main types of sealants — silicone and polyurethane. Each has its advantages depending on the building conditions and performance requirements.

    Silicone sealants offer the longest service life and excellent UV resistance, making them ideal for long-term durability. However, they can be more limited in color options and may not always be compatible with urethane-based coatings already on the building.

    Polyurethane sealants have a higher durometer (hardness), making them more resistant to punctures and wear, especially on horizontal or high-traffic surfaces. They’re also available in a wider range of colors.

    We evaluate your building’s substrates, exposure conditions, and coating compatibility to select the best sealant system for long-term performance and aesthetics.